Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Site > Breast Neoplasms > Breast Neoplasms, Male Terms and Definitions

Breast Neoplasms, Male

Medical Definition:	Any neoplasms of the male breast. These occur infrequently in males in developed countries, the incidence being about 1% of that in females. Two-thirds of patients present with intraductal carcinoma. The average age of onset is 60 years for men. Orchiectomy was the standard treatment but it has been replaced by TAMOXIFEN as the initial therapy since estrogen-receptor-positive tumors are predominant in males. Orchiectomy and mastectomy may be used if initial drug therapy is not successful. The prognosis is worse than that for females. (From Holland, et al., Cancer Medicine, 3d ed, p1751)
Guide Notes:	human only; for animal, see note at BREAST NEOPLASMS; /blood supply /chem /second /secret /ultrastruct permitted; coord IM with histol type of neopl (IM); check tags HUMAN & MALE
Also Called:	Male Breast Cancer
Previously Indexed:	Breast Neoplasms (1966-1994)

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