Can you tell me how do men get breast cancer and where on that area does the cancer form?

Uncommon but occurs: Male breast cancer is most common in older men, though male breast cancer can occur at any age. Although the incidence is 1/100 less frequent than women, the presentation is the same, usually a small mass under the nipple. Risk factors for male breast cancer include exposure to radiation, a family history of breast cancer, and having high estrogen levels. Treatment entails removal of the breast.