Incidence and Mortality
Estimated new cases and deaths from breast cancer (men only) in the United States in 2013:
New cases: 2,240.
Male breast cancer is rare. Less than 1% of all breast carcinomas occur in men.[3,4] The mean age at diagnosis is between 60 and 70 years, though men of all ages can be affected with the disease.
Predisposing risk factors  appear to include radiation exposure, estrogen administration, and diseases associated with hyperestrogenism,...
Added text about a detailed analysis of Swedish women by county that compared breast cancer mortality in the presence and absence of screening mammography and concluded that screening had little impact on breast cancer mortality (cited Autier et al. as reference 14).
Mammography—Variables Associated with Accuracy
Added text to state that the approach of applying both digital and screen-film mammography to individuals in a single arm study may yield a biased estimate of the relative sensitivity of the tests and that an alternative design would randomize individuals to two arms with each test performed in only one arm, comparing the interval cancer rates in the two arms.
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