In fact, it occurs less often than male breast cancer does.

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Kendra Motz, Marine Corps spokeswoman, that rates of male breast cancer among personnel at Camp Lejeune have yet to be established as higher than those of civilian men.

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Male breast cancer is rare, with around 200 cases each year, compared with 33, 000 women, but scientists believe that about 10% of these may be linked to BRCA2 mutations.

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Among those standing with the President at today's bill signing were Jerry Ensminger, a Marine Corps veteran who has been an advocate for affected families, and Mike Partain, who was born at Camp Lejuene and later developed male breast cancer.

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