Breast cancer in men. Clinical study of four cases in a department of internal medicine

: Breast neoplasias among men are rare, its incidence being 1% of all breast cancers in both sexes. We present four cases of breast cancer in men, given their low frequency and rare manifestations. We describe the clinical manifestations, stressing that health education for its detection must be extended to men. We comment as well on the value of hormonal receptor assessment for the prediction of a hormonal treatment in advanced breast cancers.