Abstract
A micropapillary growth pattern is uncommon in male breast carcinomas and is typically associated with an aggressive clinical course. This case report describes a 71-year-old male who presented with a fungating chest wall mass arising in the vicinity of the nipple. The tumour displayed significant micropapillary and sebaceous differentiation within a predominantly nested and solid pattern of invasive carcinoma. The tumour was positive for oestrogen and progesterone receptors on immunohistochemistry. Rare cases of pure micropapillary carcinomas have been reported in males. This case report highlights this unusual presentation and includes a brief review of the literature.
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