New research suggests male relatives of women with such genes often don't realize that they, too, may carry them.

A study finds such men also face greater odds of developing male breast cancer, as well as prostate, pancreatic and skin cancer, new research suggests.

Results were presented today at a conference in San Antonio.

Doctor Mary Daly of Fox Chase Cancer Center in Philadelphia says everyone thinks of breast and ovarian cancer -- and people assume it's all women.

Daly began her study after seeing breast cancer in several male patients who didn't know they were at risk.

She's now trying to convince more fathers, sons and brothers of women with the genes to get tested.