Professor Arnold Hill:

It used to be believed back in the 1980s, because there was evidence to say so, that male breast cancer was associated with a worse prognosis. Now, the current literature would suggest that the outcome is the same for male and female breast cancers. That may be because the treatments for breast cancer have improved over the last two decades. We have much more effective therapies for breast cancer both in males and females. The current view, therefore, is that the outcome for male breast cancer is equivalent to female breast cancer.