What does male breast cancer look like to a man? what are the symptoms of men's breast cancer?

The same as women: All men have some breast tissue. Male breast cancer does occur and it looks on a mammogram the same as female. It often presents as a new lump or mass in the breast/chest. Male breast cancer can usually be treated if caught early, but unfortunately it is often diagnosed late in men. If you have a new mass/lump chest, please have it evaluated by a doctor.

Lump: The typical symptom is a lump behind the nipple.

Breast lump: The most common presentation will be a lump on the breast and the most common location is underneath the nipple. So, do not ignore- if you feel a lump on your breast-( especially if that only happens on one breast ) - you should go to see your doctor for further evaluation. In majority cases- male breast cancer is unfortunately presented at a later stage because majority of men ignore the lump.