Breast cancer can affect men as well as women.
The disease appears similiar in both sexes. Because male breast cancer is so uncommon, it has been difficult for researchers to accumulate extensive data. Men tend to be somewhat older than women at the time of diagnosis, and the disease is often at a more advanced stage. When the disease is advanced, they usually receive some kind of hormone therapy, which is even more effective in men than in women. In the United States, male breast cancer accounts for 1 of every 100 cases of breast cancer.