Does breast cancer occur in men also? The question may seem weird- but yes, it can and does occur in men also. In fact statistics show that almost 1 per cent of all new breast cancer cases involve the male breast. The reason is that the male breast also contains breast parenchyma, although in a small amount.
However the real danger lies in the fact that breast cancer in men is pretty lethal, the tumor being generally more aggressive (highly malignant) with rapid spread to other organs of the body (called metastasis in the medical world).
Reference: Male breast cancer