Question: What are the symptoms of Breast Cancer ?
Answer: Signs of breast cancer include a lump or change in the breast. These and other signs may be caused by breast cancer or by other conditions. Check with your doctor if you have any of the following: - A lump or thickening in or near the breast or in the underarm area. - A change in the size or shape of the breast. - A dimple or puckering in the skin of the breast. - A nipple turned inward into the breast. - Fluid, other than breast milk, from the nipple, especially if it's bloody. - Scaly, red, or swollen skin on the breast, nipple, or areola (the dark area of skin around the nipple). - Dimples in the breast that look like the skin of an orange, called peau dorange. It may be difficult to detect (find) breast cancer early in pregnant or nursing women. The breasts usually get larger, tender, or lumpy in women who are pregnant, nursing, or have just given birth. This occurs because of normal hormone changes that take place during pregnancy. These changes can make small lumps difficult to detect. The breasts may also become denser. It is more difficult to detect breast cancer in women with dense breasts using mammography. Because these breast changes can delay diagnosis, breast cancer is often found at a later stage in these women.
Source: CancerGov

Question: How to diagnose Breast Cancer ?
Answer: Breast exams should be part of prenatal and postnatal care. To detect breast cancer, pregnant and nursing women should examine their breasts themselves. Women should also receive clinical breast exams during their regular prenatal and postnatal check-ups. Talk to your doctor if you notice any changes in your breasts that you do not expect or that worry you. Tests that examine the breasts are used to detect (find) and diagnose breast cancer. The following tests and procedures may be used: - Physical exam and history : An exam of the body to check general signs of health, including checking for signs of disease, such as lumps or anything else that seems unusual. A history of the patients health habits and past illnesses and treatments will also be taken. - Clinical breast exam (CBE): An exam of the breast by a doctor or other health professional. The doctor will carefully feel the breasts and under the arms for lumps or anything else that seems unusual. - MRI (magnetic resonance imaging): A procedure that uses a magnet, radio waves, and a computer to make a series of detailed pictures of both breasts. This procedure is also called nuclear magnetic resonance imaging (NMRI). - Ultrasound exam: A procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes. The echoes form a picture of body tissues called a sonogram. The picture can be printed to look at later. - Mammogram : An x-ray of the breast. A mammogram can be done with little risk to the unborn baby. Mammograms in pregnant women may appear negative even though cancer is present. - Blood chemistry studies : A procedure in which a blood sample is checked to measure the amounts of certain substances released into the blood by organs and tissues in the body. An unusual (higher or lower than normal) amount of a substance can be a sign of disease. - Biopsy : The removal of cells or tissues so they can be viewed under a microscope by a pathologist to check for signs of cancer. If a lump in the breast is found, a biopsy may be done. There are four types of breast biopsies: - Excisional biopsy : The removal of an entire lump of tissue. - Incisional biopsy : The removal of part of a lump or a sample of tissue. - Core biopsy : The removal of tissue using a wide needle. - Fine-needle aspiration (FNA) biopsy : The removal of tissue or fluid, using a thin needle. If cancer is found, tests are done to study the cancer cells. Decisions about the best treatment are based on the results of these tests and the age of the unborn baby. The tests give information about: - How quickly the cancer may grow. - How likely it is that the cancer will spread to other parts of the body. - How well certain treatments might work. - How likely the cancer is to recur (come back). Tests may include the following: - Estrogen and progesterone receptor test : A test to measure the amount of estrogen and progesterone (hormones) receptors in cancer tissue. If there are more estrogen and progesterone receptors than normal, the cancer is called estrogen and/or progesterone receptor positive. This type of breast cancer may grow more quickly. The test results show whether treatment to block estrogen and progesterone given after the baby is born may stop the cancer from growing. - Human epidermal growth factor type 2 receptor (HER2/neu) test : A laboratory test to measure how many HER2/neu genes there are and how much HER2/neu protein is made in a sample of tissue. If there are more HER2/neu genes or higher levels of HER2/neu protein than normal, the cancer is called HER2/neu positive. This type of breast cancer may grow more quickly and is more likely to spread to other parts of the body. The cancer may be treated with drugs that target the HER2/neu protein, such as trastuzumab and pertuzumab, after the baby is born. - Multigene tests: Tests in which samples of tissue are studied to look at the activity of many genes at the same time. These tests may help predict whether cancer will spread to other parts of the body or recur (come back). - Oncotype DX : This test helps predict whether stage I or stage II breast cancer that is estrogen receptor positive and node-negative will spread to other parts of the body. If the risk of the cancer spreading is high, chemotherapy may be given to lower the risk. - MammaPrint : This test helps predict whether stage I or stage II breast cancer that is node-negative will spread to other parts of the body. If the risk of the cancer spreading is high, chemotherapy may be given to lower the risk.
Source: CancerGov

Question: What is the outlook for Breast Cancer ?
Answer: Certain factors affect prognosis (chance of recovery) and treatment options.The prognosis (chance of recovery) and treatment options depend on the following: - The stage of the cancer (the size of the tumor and whether it is in the breast only or has spread to other parts of the body). - The type of breast cancer. - The age of the unborn baby. - Whether there are signs or symptoms. - The patients general health.
Source: CancerGov

Question: What are the stages of Breast Cancer ?
Answer: Key Points - After breast cancer has been diagnosed, tests are done to find out if cancer cells have spread within the breast or to other parts of the body. - There are three ways that cancer spreads in the body. - Cancer may spread from where it began to other parts of the body. - The following stages are used for breast cancer: - Stage 0 (carcinoma in situ) - Stage I - Stage II - Stage IIIA - Stage IIIB - Stage IIIC - Stage IV After breast cancer has been diagnosed, tests are done to find out if cancer cells have spread within the breast or to other parts of the body. The process used to find out if the cancer has spread within the breast or to other parts of the body is called staging. The information gathered from the staging process determines the stage of the disease. It is important to know the stage in order to plan treatment. Some procedures may expose the unborn baby to harmful radiation or dyes. These procedures are done only if absolutely necessary. Certain actions can be taken to expose the unborn baby to as little radiation as possible, such as the use of a lead-lined shield to cover the abdomen. The following tests and procedures may be used to stage breast cancer during pregnancy: - Sentinel lymph node biopsy : The removal of the sentinel lymph node during surgery. The sentinel lymph node is the first lymph node to receive lymphatic drainage from a tumor. It is the first lymph node the cancer is likely to spread to from the tumor. A radioactive substance and/or blue dye is injected near the tumor. The substance or dye flows through the lymph ducts to the lymph nodes. The first lymph node to receive the substance or dye is removed. A pathologist views the tissue under a microscope to look for cancer cells. If cancer cells are not found, it may not be necessary to remove more lymph nodes. - CT scan (CAT scan): A procedure that makes a series of detailed pictures of areas inside the body, taken from different angles. The pictures are made by a computer linked to an x-ray machine. This procedure is also called computed tomography, computerized tomography, or computerized axial tomography. - Bone scan : A procedure to check if there are rapidly dividing cells, such as cancer cells, in the bone. A very small amount of radioactive material is injected into a vein and travels through the bloodstream. The radioactive material collects in bones with cancer and is detected by a scanner. - PET scan (positron emission tomography scan): A procedure to find malignant tumor cells in the body. A small amount of radioactive glucose (sugar) is injected into a vein. The PET scanner rotates around the body and makes a picture of where glucose is being used in the body. Malignant tumor cells show up brighter in the picture because they are more active and take up more glucose than normal cells do. - MRI (magnetic resonance imaging): A procedure that uses a magnet, radio waves, and a computer to make a series of detailed pictures of areas inside the body, such as the brain. This procedure is also called nuclear magnetic resonance imaging (NMRI). - Ultrasound exam: A procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs, such as the liver, and make echoes. The echoes form a picture of body tissues called a sonogram. The picture can be printed to be looked at later. - Chest x-ray : An x-ray of the organs and bones inside the chest. An x-ray is a type of energy beam that can go through the body and onto film, making a picture of areas inside the body. There are three ways that cancer spreads in the body. Cancer can spread through tissue, the lymph system, and the blood: - Tissue. The cancer spreads from where it began by growing into nearby areas. - Lymph system. The cancer spreads from where it began by getting into the lymph system. The cancer travels through the lymph vessels to other parts of the body. - Blood. The cancer spreads from where it began by getting into the blood. The cancer travels through the blood vessels to other parts of the body. Cancer may spread from where it began to other parts of the body. When cancer spreads to another part of the body, it is called metastasis. Cancer cells break away from where they began (the primary tumor) and travel through the lymph system or blood. - Lymph system. The cancer gets into the lymph system, travels through the lymph vessels, and forms a tumor (metastatic tumor) in another part of the body. - Blood. The cancer gets into the blood, travels through the blood vessels, and forms a tumor (metastatic tumor) in another part of the body. The metastatic tumor is the same type of cancer as the primary tumor. For example, if breast cancer spreads to the bone, the cancer cells in the bone are actually breast cancer cells. The disease is metastatic breast cancer, not bone cancer. The following stages are used for breast cancer: This section describes the stages of breast cancer. The breast cancer stage is based on the results of testing that is done on the tumor and lymph nodes removed during surgery and other tests. Stage 0 (carcinoma in situ) There are 3 types of breast carcinoma in situ: - Ductal carcinoma in situ (DCIS) is a noninvasive condition in which abnormal cells are found in the lining of a breast duct. The abnormal cells have not spread outside the duct to other tissues in the breast. In some cases, DCIS may become invasive cancer and spread to other tissues. At this time, there is no way to know which lesions could become invasive. - Lobular carcinoma in situ (LCIS) is a condition in which abnormal cells are found in the lobules of the breast. This condition seldom becomes invasive cancer. However, having LCIS in one breast increases the risk of developing breast cancer in either breast. - Paget disease of the nipple is a condition in which abnormal cells are found in the nipple only. Stage I In stage I, cancer has formed. Stage I is divided into stages IA and IB. - In stage IA, the tumor is 2 centimeters or smaller. Cancer has not spread outside the breast. - In stage IB, small clusters of breast cancer cells (larger than 0.2 millimeter but not larger than 2 millimeters) are found in the lymph nodes and either: - no tumor is found in the breast; or - the tumor is 2 centimeters or smaller. Stage II Stage II is divided into stages IIA and IIB. - In stage IIA: - no tumor is found in the breast or the tumor is 2 centimeters or smaller. Cancer (larger than 2 millimeters) is found in 1 to 3 axillary lymph nodes or in the lymph nodes near the breastbone (found during a sentinel lymph node biopsy); or - the tumor is larger than 2 centimeters but not larger than 5 centimeters. Cancer has not spread to the lymph nodes. - In stage IIB, the tumor is: - larger than 2 centimeters but not larger than 5 centimeters. Small clusters of breast cancer cells (larger than 0.2 millimeter but not larger than 2 millimeters) are found in the lymph nodes; or - larger than 2 centimeters but not larger than 5 centimeters. Cancer has spread to 1 to 3 axillary lymph nodes or to the lymph nodes near the breastbone (found during a sentinel lymph node biopsy); or - larger than 5 centimeters. Cancer has not spread to the lymph nodes. Stage IIIA In stage IIIA: - no tumor is found in the breast or the tumor may be any size. Cancer is found in 4 to 9 axillary lymph nodes or in the lymph nodes near the breastbone (found during imaging tests or a physical exam); or - the tumor is larger than 5 centimeters. Small clusters of breast cancer cells (larger than 0.2 millimeter but not larger than 2 millimeters) are found in the lymph nodes; or - the tumor is larger than 5 centimeters. Cancer has spread to 1 to 3 axillary lymph nodes or to the lymph nodes near the breastbone (found during a sentinel lymph node biopsy). Stage IIIB In stage IIIB, the tumor may be any size and cancer has spread to the chest wall and/or to the skin of the breast and caused swelling or an ulcer. Also, cancer may have spread to: - up to 9 axillary lymph nodes; or - the lymph nodes near the breastbone. Cancer that has spread to the skin of the breast may also be inflammatory breast cancer. See the section on Inflammatory Breast Cancer for more information. Stage IIIC In stage IIIC, no tumor is found in the breast or the tumor may be any size. Cancer may have spread to the skin of the breast and caused swelling or an ulcer and/or has spread to the chest wall. Also, cancer has spread to: - 10 or more axillary lymph nodes; or - lymph nodes above or below the collarbone; or - axillary lymph nodes and lymph nodes near the breastbone. Cancer that has spread to the skin of the breast may also be inflammatory breast cancer. See the section on Inflammatory Breast Cancer for more information. For treatment, stage IIIC breast cancer is divided into operable and inoperable stage IIIC. Stage IV In stage IV, cancer has spread to other organs of the body, most often the bones, lungs, liver, or brain.
Source: CancerGov

Question: What are the treatments for Breast Cancer ?
Answer: Key Points - Treatment options for pregnant women depend on the stage of the disease and the age of the unborn baby. - Three types of standard treatment are used: - Surgery - Radiation therapy - Chemotherapy - Ending the pregnancy does not seem to improve the mothers chance of survival. - Treatment for breast cancer may cause side effects. Treatment options for pregnant women depend on the stage of the disease and the age of the unborn baby. Three types of standard treatment are used: Surgery Most pregnant women with breast cancer have surgery to remove the breast. Some of the lymph nodes under the arm may be removed and checked under a microscope for signs of cancer. Types of surgery to remove the cancer include: - Modified radical mastectomy: Surgery to remove the whole breast that has cancer, many of the lymph nodes under the arm, the lining over the chest muscles, and sometimes, part of the chest wall muscles. This type of surgery is most common in pregnant women. - Breast-conserving surgery: Surgery to remove the cancer and some normal tissue around it, but not the breast itself. Part of the chest wall lining may also be removed if the cancer is near it. This type of surgery may also be called lumpectomy, partial mastectomy, segmental mastectomy, quadrantectomy, or breast-sparing surgery. Even if the doctor removes all of the cancer that can be seen at the time of surgery, the patient may be given radiation therapy or chemotherapy after surgery to try to kill any cancer cells that may be left. For pregnant women with early-stage breast cancer, radiation therapy and hormone therapy are given after the baby is born. Treatment given after surgery, to lower the risk that the cancer will come back, is called adjuvant therapy. Radiation therapy Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. There are two types of radiation therapy: - External radiation therapy uses a machine outside the body to send radiation toward the cancer. - Internal radiation therapy uses a radioactive substance sealed in needles, seeds, wires, or catheters that are placed directly into or near the cancer. The way the radiation therapy is given depends on the type and stage of the cancer being treated. External radiation therapy is not given to pregnant women with early stage (stage I or II) breast cancer because it can harm the unborn baby. For women with late stage (stage III or IV) breast cancer, radiation therapy is not given during the first 3 months of pregnancy and is delayed until after the baby is born, if possible. Chemotherapy Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping the cells from dividing. When chemotherapy is taken by mouth or injected into a vein or muscle, the drugs enter the bloodstream and can reach cancer cells throughout the body (systemic chemotherapy). When chemotherapy is placed directly into the cerebrospinal fluid, an organ, or a body cavity such as the abdomen, the drugs mainly affect cancer cells in those areas (regional chemotherapy). The way the chemotherapy is given depends on the type and stage of the cancer being treated. Chemotherapy is usually not given during the first 3 months of pregnancy. Chemotherapy given after this time does not usually harm the unborn baby but may cause early labor and low birth weight. See Drugs Approved for Breast Cancer for more information. Ending the pregnancy does not seem to improve the mothers chance of survival. Because ending the pregnancy is not likely to improve the mothers chance of survival, it is not usually a treatment option. Treatment for breast cancer may cause side effects. For information about side effects caused by treatment for cancer, see our Side Effects page. Treatment Options by Stage Early Stage Breast Cancer (Stage I and Stage II) Treatment of early-stage breast cancer (stage I and stage II) may include the following: - Modified radical mastectomy. - Breast-conserving surgery followed by radiation therapy. In pregnant women, radiation therapy is delayed until after the baby is born. - Modified radical mastectomy or breast-conserving surgery during pregnancy followed by chemotherapy after the first 3 months of pregnancy. Late Stage Breast Cancer (Stage III and Stage IV) Treatment of late-stage breast cancer (stage III and stage IV) may include the following: - Radiation therapy. - Chemotherapy. Radiation therapy and chemotherapy should not be given during the first 3 months of pregnancy.
Source: CancerGov

Question: What is (are) Breast Cancer ?
Answer: Key Points - Breast cancer is a disease in which malignant (cancer) cells form in the tissues of the breast. - Breast cancer is the second most common type of cancer in American women. Breast cancer is a disease in which malignant (cancer) cells form in the tissues of the breast. The breast is made up of lobes and ducts. Each breast has 15 to 20 sections called lobes, which have many smaller sections called lobules. Lobules end in dozens of tiny bulbs that can make milk. The lobes, lobules, and bulbs are linked by thin tubes called ducts. Each breast also has blood vessels and lymph vessels. The lymph vessels carry an almost colorless fluid called lymph. Lymph vessels lead to organs called lymph nodes. Lymph nodes are small bean-shaped structures that are found throughout the body. They filter lymph and store white blood cells that help fight infection and disease. Clusters of lymph nodes are found near the breast in the axilla (under the arm), above the collarbone, and in the chest. See the following PDQ summaries for more information about breast cancer: - Breast Cancer Screening - Breast Cancer Treatment - Breast Cancer Treatment and Pregnancy - Male Breast Cancer Treatment - Genetics of Breast and Ovarian Cancer Breast cancer is the second most common type of cancer in American women. Women in the United States get breast cancer more than any other type of cancer except skin cancer. Breast cancer is second to lung cancer as a cause of cancer death in American women. However, deaths from breast cancer have decreased a little bit every year between 2003 and 2012. Breast cancer also occurs in men, but the number of new cases is small.
Source: CancerGov

Question: How to prevent Breast Cancer ?
Answer: Key Points - Avoiding risk factors and increasing protective factors may help prevent cancer. - The following are risk factors for breast cancer: - Older age - A personal history of breast cancer or benign (noncancer) breast disease - Inherited risk of breast cancer - Dense breasts - Exposure of breast tissue to estrogen made in the body - Taking hormone therapy for symptoms of menopause - Radiation therapy to the breast or chest - Obesity - Drinking alcohol - The following are protective factors for breast cancer: - Less exposure of breast tissue to estrogen made by the body - Taking estrogen-only hormone therapy after hysterectomy, selective estrogen receptor modulators, or aromatase inhibitors and inactivators - Estrogen-only hormone therapy after hysterectomy - Selective estrogen receptor modulators - Aromatase inhibitors and inactivators - Risk-reducing mastectomy - Ovarian ablation - Getting enough exercise - It is not clear whether the following affect the risk of breast cancer: - Oral contraceptives - Environment - Studies have shown that some factors do not affect the risk of breast cancer. - Cancer prevention clinical trials are used to study ways to prevent cancer. - New ways to prevent breast cancer are being studied in clinical trials. Avoiding risk factors and increasing protective factors may help prevent cancer. Avoiding cancer risk factors may help prevent certain cancers. Risk factors include smoking, being overweight, and not getting enough exercise. Increasing protective factors such as quitting smoking and exercising may also help prevent some cancers. Talk to your doctor or other health care professional about how you might lower your risk of cancer. NCI's Breast Cancer Risk Assessment Tool uses a woman's risk factors to estimate her risk for breast cancer during the next five years and up to age 90. This online tool is meant to be used by a health care provider. For more information on breast cancer risk, call 1-800-4-CANCER. The following are risk factors for breast cancer: Older age Older age is the main risk factor for most cancers. The chance of getting cancer increases as you get older. A personal history of breast cancer or benign (noncancer) breast disease Women with any of the following have an increased risk of breast cancer: - A personal history of invasive breast cancer, ductal carcinoma in situ (DCIS), or lobular carcinoma in situ (LCIS). - A personal history of benign (noncancer) breast disease. Inherited risk of breast cancer Women with a family history of breast cancer in a first-degree relative (mother, sister, or daughter) have an increased risk of breast cancer. Women who have inherited changes in the BRCA1 and BRCA2 genes or in certain other genes have a higher risk of breast cancer. The risk of breast cancer caused by inherited gene changes depends on the type of gene mutation, family history of cancer, and other factors. Dense breasts Having breast tissue that is dense on a mammogram is a factor in breast cancer risk. The level of risk depends on how dense the breast tissue is. Women with very dense breasts have a higher risk of breast cancer than women with low breast density. Increased breast density is often an inherited trait, but it may also occur in women who have not had children, have a first pregnancy late in life, take postmenopausal hormones, or drink alcohol. Exposure of breast tissue to estrogen made in the body Estrogen is a hormone made by the body. It helps the body develop and maintain female sex characteristics. Being exposed to estrogen over a long time may increase the risk of breast cancer. Estrogen levels are highest during the years a woman is menstruating. A woman's exposure to estrogen is increased in the following ways: - Early menstruation: Beginning to have menstrual periods at age 11 or younger increases the number of years the breast tissue is exposed to estrogen. - Starting menopause at a later age: The more years a woman menstruates, the longer her breast tissue is exposed to estrogen. - Older age at first birth or never having given birth: Because estrogen levels are lower during pregnancy, breast tissue is exposed to more estrogen in women who become pregnant for the first time after age 35 or who never become pregnant. Taking hormone therapy for symptoms of menopause Hormones, such as estrogen and progesterone, can be made into a pill form in a laboratory. Estrogen, progestin, or both may be given to replace the estrogen no longer made by the ovaries in postmenopausal women or women who have had their ovaries removed. This is called hormone replacement therapy (HRT) or hormone therapy (HT). Combination HRT/HT is estrogen combined with progestin. This type of HRT/HT increases the risk of breast cancer. Studies show that when women stop taking estrogen combined with progestin, the risk of breast cancer decreases. Radiation therapy to the breast or chest Radiation therapy to the chest for the treatment of cancer increases the risk of breast cancer, starting 10 years after treatment. The risk of breast cancer depends on the dose of radiation and the age at which it is given. The risk is highest if radiation treatment was used during puberty, when breasts are forming. Radiation therapy to treat cancer in one breast does not appear to increase the risk of cancer in the other breast. For women who have inherited changes in the BRCA1 and BRCA2 genes, exposure to radiation, such as that from chest x-rays, may further increase the risk of breast cancer, especially in women who were x-rayed before 20 years of age. Obesity Obesity increases the risk of breast cancer, especially in postmenopausal women who have not used hormone replacement therapy. Drinking alcohol Drinking alcohol increases the risk of breast cancer. The level of risk rises as the amount of alcohol consumed rises. The following are protective factors for breast cancer: Less exposure of breast tissue to estrogen made by the body Decreasing the length of time a woman's breast tissue is exposed to estrogen may help prevent breast cancer. Exposure to estrogen is reduced in the following ways: - Early pregnancy: Estrogen levels are lower during pregnancy. Women who have a full-term pregnancy before age 20 have a lower risk of breast cancer than women who have not had children or who give birth to their first child after age 35. - Breast-feeding: Estrogen levels may remain lower while a woman is breast-feeding. Women who breastfed have a lower risk of breast cancer than women who have had children but did not breastfeed. Taking estrogen-only hormone therapy after hysterectomy, selective estrogen receptor modulators, or aromatase inhibitors and inactivators Estrogen-only hormone therapy after hysterectomy Hormone therapy with estrogen only may be given to women who have had a hysterectomy. In these women, estrogen-only therapy after menopause may decrease the risk of breast cancer. There is an increased risk of stroke and heart and blood vessel disease in postmenopausal women who take estrogen after a hysterectomy. Selective estrogen receptor modulators Tamoxifen and raloxifene belong to the family of drugs called selective estrogen receptor modulators (SERMs). SERMs act like estrogen on some tissues in the body, but block the effect of estrogen on other tissues. Treatment with tamoxifen lowers the risk of estrogen receptor-positive (ER-positive) breast cancer and ductal carcinoma in situ in premenopausal and postmenopausal women at high risk. Treatment with raloxifene also lowers the risk of breast cancer in postmenopausal women. With either drug, the reduced risk lasts for several years or longer after treatment is stopped. Lower rates of broken bones have been noted in patients taking raloxifene. Taking tamoxifen increases the risk of hot flashes, endometrial cancer, stroke, cataracts, and blood clots (especially in the lungs and legs). The risk of having these problems increases markedly in women older than 50 years compared with younger women. Women younger than 50 years who have a high risk of breast cancer may benefit the most from taking tamoxifen. The risk of having these problems decreases after tamoxifen is stopped. Talk with your doctor about the risks and benefits of taking this drug. Taking raloxifene increases the risk of blood clots in the lungs and legs, but does not appear to increase the risk of endometrial cancer. In postmenopausal women with osteoporosis (decreased bone density), raloxifene lowers the risk of breast cancer for women who have a high or low risk of breast cancer. It is not known if raloxifene would have the same effect in women who do not have osteoporosis. Talk with your doctor about the risks and benefits of taking this drug. Other SERMs are being studied in clinical trials. Aromatase inhibitors and inactivators Aromatase inhibitors (anastrozole, letrozole) and inactivators (exemestane) lower the risk of recurrence and of new breast cancers in women who have a history of breast cancer. Aromatase inhibitors also decrease the risk of breast cancer in women with the following conditions: - Postmenopausal women with a personal history of breast cancer. - Women with no personal history of breast cancer who are 60 years and older, have a history of ductal carcinoma in situ with mastectomy, or have a high risk of breast cancer based on the Gail model tool (a tool used to estimate the risk of breast cancer). In women with an increased risk of breast cancer, taking aromatase inhibitors decreases the amount of estrogen made by the body. Before menopause, estrogen is made by the ovaries and other tissues in a woman's body, including the brain, fat tissue, and skin. After menopause, the ovaries stop making estrogen, but the other tissues do not. Aromatase inhibitors block the action of an enzyme called aromatase, which is used to make all of the body's estrogen. Aromatase inactivators stop the enzyme from working. Possible harms from taking aromatase inhibitors include muscle and joint pain, osteoporosis, hot flashes, and feeling very tired. Risk-reducing mastectomy Some women who have a high risk of breast cancer may choose to have a risk-reducing mastectomy (the removal of both breasts when there are no signs of cancer). The risk of breast cancer is much lower in these women and most feel less anxious about their risk of breast cancer. However, it is very important to have a cancer risk assessment and counseling about the different ways to prevent breast cancer before making this decision. Ovarian ablation The ovaries make most of the estrogen that is made by the body. Treatments that stop or lower the amount of estrogen made by the ovaries include surgery to remove the ovaries, radiation therapy, or taking certain drugs. This is called ovarian ablation. Premenopausal women who have a high risk of breast cancer due to certain changes in the BRCA1 and BRCA2 genes may choose to have a risk-reducing oophorectomy (the removal of both ovaries when there are no signs of cancer). This decreases the amount of estrogen made by the body and lowers the risk of breast cancer. Risk-reducing oophorectomy also lowers the risk of breast cancer in normal premenopausal women and in women with an increased risk of breast cancer due to radiation to the chest. However, it is very important to have a cancer risk assessment and counseling before making this decision. The sudden drop in estrogen levels may cause the symptoms of menopause to begin. These include hot flashes, trouble sleeping, anxiety, and depression. Long-term effects include decreased sex drive, vaginal dryness, and decreased bone density. Getting enough exercise Women who exercise four or more hours a week have a lower risk of breast cancer. The effect of exercise on breast cancer risk may be greatest in premenopausal women who have normal or low body weight. It is not clear whether the following affect the risk of breast cancer: Oral contraceptives Certain oral contraceptives contain estrogen. Some studies have shown that taking oral contraceptives ("the pill") may slightly increase the risk of breast cancer in current users. This risk decreases over time. Other studies have not shown an increased risk of breast cancer in women who take oral contraceptives. Progestin -only contraceptives that are injected or implanted do not appear to increase the risk of breast cancer. More studies are needed to know whether progestin-only oral contraceptives increase the risk of breast cancer. Environment Studies have not proven that being exposed to certain substances in the environment, such as chemicals, increases the risk of breast cancer. Studies have shown that some factors do not affect the risk of breast cancer. The following do not affect the risk of breast cancer: - Having an abortion. - Making diet changes such as eating less fat or more fruits and vegetables. - Taking vitamins, including fenretinide (a type of vitamin A). - Cigarette smoking, both active and passive (inhaling secondhand smoke). - Using underarm deodorant or antiperspirant. - Taking statins (cholesterol -lowering drugs). - Taking bisphosphonates (drugs used to treat osteoporosis and hypercalcemia) by mouth or by intravenous infusion. Cancer prevention clinical trials are used to study ways to prevent cancer. Cancer prevention clinical trials are used to study ways to lower the risk of developing certain types of cancer. Some cancer prevention trials are conducted with healthy people who have not had cancer but who have an increased risk for cancer. Other prevention trials are conducted with people who have had cancer and are trying to prevent another cancer of the same type or to lower their chance of developing a new type of cancer. Other trials are done with healthy volunteers who are not known to have any risk factors for cancer. The purpose of some cancer prevention clinical trials is to find out whether actions people take can prevent cancer. These may include exercising more or quitting smoking or taking certain medicines, vitamins, minerals, or food supplements. New ways to prevent breast cancer are being studied in clinical trials.
Source: CancerGov

Question: Who is at risk for Breast Cancer? ?
Answer: Key Points - Avoiding risk factors and increasing protective factors may help prevent cancer. - The following are risk factors for breast cancer: - Older age - A personal history of breast cancer or benign (noncancer) breast disease - Inherited risk of breast cancer - Dense breasts - Exposure of breast tissue to estrogen made in the body - Taking hormone therapy for symptoms of menopause - Radiation therapy to the breast or chest - Obesity - Drinking alcohol - The following are protective factors for breast cancer: - Less exposure of breast tissue to estrogen made by the body - Taking estrogen-only hormone therapy after hysterectomy, selective estrogen receptor modulators, or aromatase inhibitors and inactivators - Estrogen-only hormone therapy after hysterectomy - Selective estrogen receptor modulators - Aromatase inhibitors and inactivators - Risk-reducing mastectomy - Ovarian ablation - Getting enough exercise - It is not clear whether the following affect the risk of breast cancer: - Oral contraceptives - Environment - Studies have shown that some factors do not affect the risk of breast cancer. - Cancer prevention clinical trials are used to study ways to prevent cancer. - New ways to prevent breast cancer are being studied in clinical trials. Avoiding risk factors and increasing protective factors may help prevent cancer. Avoiding cancer risk factors may help prevent certain cancers. Risk factors include smoking, being overweight, and not getting enough exercise. Increasing protective factors such as quitting smoking and exercising may also help prevent some cancers. Talk to your doctor or other health care professional about how you might lower your risk of cancer. NCI's Breast Cancer Risk Assessment Tool uses a woman's risk factors to estimate her risk for breast cancer during the next five years and up to age 90. This online tool is meant to be used by a health care provider. For more information on breast cancer risk, call 1-800-4-CANCER. The following are risk factors for breast cancer: Older age Older age is the main risk factor for most cancers. The chance of getting cancer increases as you get older. A personal history of breast cancer or benign (noncancer) breast disease Women with any of the following have an increased risk of breast cancer: - A personal history of invasive breast cancer, ductal carcinoma in situ (DCIS), or lobular carcinoma in situ (LCIS). - A personal history of benign (noncancer) breast disease. Inherited risk of breast cancer Women with a family history of breast cancer in a first-degree relative (mother, sister, or daughter) have an increased risk of breast cancer. Women who have inherited changes in the BRCA1 and BRCA2 genes or in certain other genes have a higher risk of breast cancer. The risk of breast cancer caused by inherited gene changes depends on the type of gene mutation, family history of cancer, and other factors. Dense breasts Having breast tissue that is dense on a mammogram is a factor in breast cancer risk. The level of risk depends on how dense the breast tissue is. Women with very dense breasts have a higher risk of breast cancer than women with low breast density. Increased breast density is often an inherited trait, but it may also occur in women who have not had children, have a first pregnancy late in life, take postmenopausal hormones, or drink alcohol. Exposure of breast tissue to estrogen made in the body Estrogen is a hormone made by the body. It helps the body develop and maintain female sex characteristics. Being exposed to estrogen over a long time may increase the risk of breast cancer. Estrogen levels are highest during the years a woman is menstruating. A woman's exposure to estrogen is increased in the following ways: - Early menstruation: Beginning to have menstrual periods at age 11 or younger increases the number of years the breast tissue is exposed to estrogen. - Starting menopause at a later age: The more years a woman menstruates, the longer her breast tissue is exposed to estrogen. - Older age at first birth or never having given birth: Because estrogen levels are lower during pregnancy, breast tissue is exposed to more estrogen in women who become pregnant for the first time after age 35 or who never become pregnant. Taking hormone therapy for symptoms of menopause Hormones, such as estrogen and progesterone, can be made into a pill form in a laboratory. Estrogen, progestin, or both may be given to replace the estrogen no longer made by the ovaries in postmenopausal women or women who have had their ovaries removed. This is called hormone replacement therapy (HRT) or hormone therapy (HT). Combination HRT/HT is estrogen combined with progestin. This type of HRT/HT increases the risk of breast cancer. Studies show that when women stop taking estrogen combined with progestin, the risk of breast cancer decreases. Radiation therapy to the breast or chest Radiation therapy to the chest for the treatment of cancer increases the risk of breast cancer, starting 10 years after treatment. The risk of breast cancer depends on the dose of radiation and the age at which it is given. The risk is highest if radiation treatment was used during puberty, when breasts are forming. Radiation therapy to treat cancer in one breast does not appear to increase the risk of cancer in the other breast. For women who have inherited changes in the BRCA1 and BRCA2 genes, exposure to radiation, such as that from chest x-rays, may further increase the risk of breast cancer, especially in women who were x-rayed before 20 years of age. Obesity Obesity increases the risk of breast cancer, especially in postmenopausal women who have not used hormone replacement therapy. Drinking alcohol Drinking alcohol increases the risk of breast cancer. The level of risk rises as the amount of alcohol consumed rises. The following are protective factors for breast cancer: Less exposure of breast tissue to estrogen made by the body Decreasing the length of time a woman's breast tissue is exposed to estrogen may help prevent breast cancer. Exposure to estrogen is reduced in the following ways: - Early pregnancy: Estrogen levels are lower during pregnancy. Women who have a full-term pregnancy before age 20 have a lower risk of breast cancer than women who have not had children or who give birth to their first child after age 35. - Breast-feeding: Estrogen levels may remain lower while a woman is breast-feeding. Women who breastfed have a lower risk of breast cancer than women who have had children but did not breastfeed. Taking estrogen-only hormone therapy after hysterectomy, selective estrogen receptor modulators, or aromatase inhibitors and inactivators Estrogen-only hormone therapy after hysterectomy Hormone therapy with estrogen only may be given to women who have had a hysterectomy. In these women, estrogen-only therapy after menopause may decrease the risk of breast cancer. There is an increased risk of stroke and heart and blood vessel disease in postmenopausal women who take estrogen after a hysterectomy. Selective estrogen receptor modulators Tamoxifen and raloxifene belong to the family of drugs called selective estrogen receptor modulators (SERMs). SERMs act like estrogen on some tissues in the body, but block the effect of estrogen on other tissues. Treatment with tamoxifen lowers the risk of estrogen receptor-positive (ER-positive) breast cancer and ductal carcinoma in situ in premenopausal and postmenopausal women at high risk. Treatment with raloxifene also lowers the risk of breast cancer in postmenopausal women. With either drug, the reduced risk lasts for several years or longer after treatment is stopped. Lower rates of broken bones have been noted in patients taking raloxifene. Taking tamoxifen increases the risk of hot flashes, endometrial cancer, stroke, cataracts, and blood clots (especially in the lungs and legs). The risk of having these problems increases markedly in women older than 50 years compared with younger women. Women younger than 50 years who have a high risk of breast cancer may benefit the most from taking tamoxifen. The risk of having these problems decreases after tamoxifen is stopped. Talk with your doctor about the risks and benefits of taking this drug. Taking raloxifene increases the risk of blood clots in the lungs and legs, but does not appear to increase the risk of endometrial cancer. In postmenopausal women with osteoporosis (decreased bone density), raloxifene lowers the risk of breast cancer for women who have a high or low risk of breast cancer. It is not known if raloxifene would have the same effect in women who do not have osteoporosis. Talk with your doctor about the risks and benefits of taking this drug. Other SERMs are being studied in clinical trials. Aromatase inhibitors and inactivators Aromatase inhibitors (anastrozole, letrozole) and inactivators (exemestane) lower the risk of recurrence and of new breast cancers in women who have a history of breast cancer. Aromatase inhibitors also decrease the risk of breast cancer in women with the following conditions: - Postmenopausal women with a personal history of breast cancer. - Women with no personal history of breast cancer who are 60 years and older, have a history of ductal carcinoma in situ with mastectomy, or have a high risk of breast cancer based on the Gail model tool (a tool used to estimate the risk of breast cancer). In women with an increased risk of breast cancer, taking aromatase inhibitors decreases the amount of estrogen made by the body. Before menopause, estrogen is made by the ovaries and other tissues in a woman's body, including the brain, fat tissue, and skin. After menopause, the ovaries stop making estrogen, but the other tissues do not. Aromatase inhibitors block the action of an enzyme called aromatase, which is used to make all of the body's estrogen. Aromatase inactivators stop the enzyme from working. Possible harms from taking aromatase inhibitors include muscle and joint pain, osteoporosis, hot flashes, and feeling very tired. Risk-reducing mastectomy Some women who have a high risk of breast cancer may choose to have a risk-reducing mastectomy (the removal of both breasts when there are no signs of cancer). The risk of breast cancer is much lower in these women and most feel less anxious about their risk of breast cancer. However, it is very important to have a cancer risk assessment and counseling about the different ways to prevent breast cancer before making this decision. Ovarian ablation The ovaries make most of the estrogen that is made by the body. Treatments that stop or lower the amount of estrogen made by the ovaries include surgery to remove the ovaries, radiation therapy, or taking certain drugs. This is called ovarian ablation. Premenopausal women who have a high risk of breast cancer due to certain changes in the BRCA1 and BRCA2 genes may choose to have a risk-reducing oophorectomy (the removal of both ovaries when there are no signs of cancer). This decreases the amount of estrogen made by the body and lowers the risk of breast cancer. Risk-reducing oophorectomy also lowers the risk of breast cancer in normal premenopausal women and in women with an increased risk of breast cancer due to radiation to the chest. However, it is very important to have a cancer risk assessment and counseling before making this decision. The sudden drop in estrogen levels may cause the symptoms of menopause to begin. These include hot flashes, trouble sleeping, anxiety, and depression. Long-term effects include decreased sex drive, vaginal dryness, and decreased bone density. Getting enough exercise Women who exercise four or more hours a week have a lower risk of breast cancer. The effect of exercise on breast cancer risk may be greatest in premenopausal women who have normal or low body weight. It is not clear whether the following affect the risk of breast cancer: Oral contraceptives Certain oral contraceptives contain estrogen. Some studies have shown that taking oral contraceptives ("the pill") may slightly increase the risk of breast cancer in current users. This risk decreases over time. Other studies have not shown an increased risk of breast cancer in women who take oral contraceptives. Progestin -only contraceptives that are injected or implanted do not appear to increase the risk of breast cancer. More studies are needed to know whether progestin-only oral contraceptives increase the risk of breast cancer. Environment Studies have not proven that being exposed to certain substances in the environment, such as chemicals, increases the risk of breast cancer. Studies have shown that some factors do not affect the risk of breast cancer. The following do not affect the risk of breast cancer: - Having an abortion. - Making diet changes such as eating less fat or more fruits and vegetables. - Taking vitamins, including fenretinide (a type of vitamin A). - Cigarette smoking, both active and passive (inhaling secondhand smoke). - Using underarm deodorant or antiperspirant. - Taking statins (cholesterol -lowering drugs). - Taking bisphosphonates (drugs used to treat osteoporosis and hypercalcemia) by mouth or by intravenous infusion.
Source: CancerGov

Question: what research (or clinical trials) is being done for Breast Cancer ?
Answer: Cancer prevention clinical trials are used to study ways to prevent cancer. Cancer prevention clinical trials are used to study ways to lower the risk of developing certain types of cancer. Some cancer prevention trials are conducted with healthy people who have not had cancer but who have an increased risk for cancer. Other prevention trials are conducted with people who have had cancer and are trying to prevent another cancer of the same type or to lower their chance of developing a new type of cancer. Other trials are done with healthy volunteers who are not known to have any risk factors for cancer. The purpose of some cancer prevention clinical trials is to find out whether actions people take can prevent cancer. These may include exercising more or quitting smoking or taking certain medicines, vitamins, minerals, or food supplements. New ways to prevent breast cancer are being studied in clinical trials.
Source: CancerGov

Question: What is (are) Breast Cancer ?
Answer: Key Points - Breast cancer is a disease in which malignant (cancer) cells form in the tissues of the breast. - Breast cancer is the second leading cause of death from cancer in American women. - Different factors increase or decrease the risk of breast cancer. Breast cancer is a disease in which malignant (cancer) cells form in the tissues of the breast. The breast is made up of lobes and ducts. Each breast has 15 to 20 sections called lobes, which have many smaller sections called lobules. Lobules end in dozens of tiny bulbs that can produce milk. The lobes, lobules, and bulbs are linked by thin tubes called ducts. Each breast also contains blood vessels and lymph vessels. The lymph vessels carry an almost colorless fluid called lymph. Lymph vessels lead to organs called lymph nodes. Lymph nodes are small bean-shaped structures that are found throughout the body. They filter substances in lymph and help fight infection and disease. Clusters of lymph nodes are found near the breast in the axilla (under the arm), above the collarbone, and in the chest. See the following PDQ summaries for more information about breast cancer: - Breast Cancer Prevention - Breast Cancer Treatment - Genetics of Breast and Gynecologic Cancers Breast cancer is the second leading cause of death from cancer in American women. Women in the United States get breast cancer more than any other type of cancer except for skin cancer. Breast cancer is second only to lung cancer as a cause of cancer death in women. Breast cancer occurs more often in white women than in black women. However, black women are more likely than white women to die from the disease. Breast cancer occurs in men also, but the number of cases is small.
Source: CancerGov