%0 Journal Article %T A case of carcinoma of the male breast mimicking a mucinous carcinoma of the skin %A Sumihisa Imakado %A Ryo Masuda %J Clinics and Practice %D 2012 %I PAGEPress Publications %R 10.4081/cp.2012.e61 %X The authors report a case of mucinous carcinoma of the male breast firstly diagnosed as a mucinous carcinoma of the skin. The immunohistochemical results of this tumor were as follows: cytokeratin7 (-), gross cystic disease fluid protein 15 (-), p63 (-), estrogen receptor (+), and progesterone receptor (+) for the primary nodule; cytokeratin7 (-), thyroid transcription factor-1 (-), gross cystic disease fluid protein 15 (-), p63 (-), cytokeratin8 (+), cytokeratin18 (+), and cytokeratin20 (+) for the recurrent nodule. The tumor cells had cytokeratin7 (-)/ cytokeratin20 (+) phenotype and it was very unusual for mucinous carcinoma of the breast. %K mucinous carcinoma of the skin %K breast carcinoma. %U http://www.clinicsandpractice.org/index.php/cp/article/view/506