dos Santos, Vitorino ModestoCintra Osterne, Ernesto Misaelde Castro, Rodrigo AiresMarques, Herberth Vera Cruz Furtado2009-05-272009-05-272007-10-12dos Santos VM, Cintra Osterne EM, de Castro RA, Marques HV. Bilateral male breast cancer: too many concerns? Asian Pacific Journal of Cancer Prevention. 2007 Oct-Dec; 8(4): 640-1http://imsear.searo.who.int/handle/123456789/37655Asian Pacific Journal of Cancer Prevention.The male breast cancer accounts for nearly 1% of all breast cancer cases and bilateral involvement occurs in less than 2% of the cases. Estrogen treatment for prostate cancer is a risk factor for primary breast cancer. Bilateral breast carcinomas were found in a 79-year-old Brazilian black man, following prostate cancer treatment with estrogen. Prostate cancer metastases could be found in breast tissue, and might be indistinguishable from primary breast tumours on histological evaluation without immunohistochemistry. Coexistence of prostate cancer with breast cancer increases future-longevity concerns.engAgedBrazilBreast Neoplasms, Male --chemically inducedEstrogens --adverse effectsHumansImmunoenzyme TechniquesMaleProstatic Neoplasms --drug therapyCase Reports