Breast cancer is a malignant tumor that starts from cells of the breast. A malignant tumor is a group of cancer cells that may invade surrounding tissues and spread (metastasize) to distant parts of the body. Breast cancer happens mainly in women, but men can get it, too.
Risk Factor
Only about 1% of all cases of breast cancer occur in men, some risk factors have been identified that make some men more likely to develop breast cancer than others. These risk factors: age, family history, radiation exposure, treatment with estrogen and RCA2 gene mutations. Breast cancer is the ...