what kind of tumors are found in the breast
Breast cancer is a malignant (cancer) tumor that starts in the cells of the breast. It is found mostly in women, but men can get breast cancer, too. This information is only about breast cancer in women. You can learn more about breast cancer in men in Breast Cancer in Men.reast lumps that are not cancer (benign breast lumps) Most breast lumps are not cancer â they are benign. Benign breast tumors are abnormal growths, but they do not spread outside of the breast and they are not life threatening. But some benign breast lumps can increase a woman's risk of getting breast cancer.