Breast cancer is abnormal cell growth that originates in the breast tissue. Breast cancer is most commonly diagnosed in women, although in rare instances men can get breast cancer too. There are many types of lumps or tumors that can grow in breast tissue. Most of these tumors are benign, which means that they are not cancerous. A benign tumor, unlike a malignant or cancerous tumor, does not exhibit abnormal cell growth and will not spread to other areas of the body.
Breast cancer can take a number of forms.
It is confined to the ducts. The best way to find DCIS is with a mammogram. From there it can spread to other parts of the body. IDC is the most common type of breast cancer. It can spread to other parts of the body.