A case of extramammary breast carcinoma of the axilla

Abstract

We report a case of extramammary breast carcinoma of the axilla, diagnosed by (FNA) cytology. A 61-year-old woman with a left axillar mass was found in cytological specimens to have numerous ductal epithelial cells mixed with myoepithelial cells.
Three years later, cytology from the ipsilateral axillar lesion showed higher cellularity.
Papillary cell clusters consist of large atypical cells with coarse chromatin. The axillary tumor appeared to be extramammary breast carcinoma, confirmed by the prior diagnosis of the extrammary breast.