Breast cancer in men

Infiltrating ductal carcinoma - male; Ductal carcinoma in situ - male; Intraductal carcinoma - male; Inflammatory breast cancer - male; Paget disease of the nipple - male; Breast cancer - male

Breast cancer is cancer that starts in breast tissue. Both males and females have breast tissue. This means that anyone, including men and boys, can develop breast cancer.

Breast cancer in men is rare. Male breast cancer accounts for less than 1% of all breast cancers.

Gynecomastia

Gynecomastia is the development of prominent breast tissue in the male. The condition can develop during puberty and sometimes resolve on its own. Other causes of gynecomastia include exposure to estrogens, androgens (often taken secretly for body building), marijuana, and some medications. Rare causes include tumors, genetic defects, and chronic liver disease.

Causes

Symptoms

Exams and Tests

Treatment

Support Groups

Outlook (Prognosis)

Possible Complications

When to Contact a Medical Professional

Prevention