微囊肿性附件癌(MAC)是新近被描述的一种肿瘤,其临床上具有局部侵袭性,切除后易于复发的特点.本文报道了1例82岁、女性MAC患者.光镜组织病理:肿瘤由2种成分组成.第一种肿瘤细胞呈实体性小巢状、条索状或形成导管样结构,不规则分布于整个真皮.肿瘤细胞呈立方或圆形,胞浆嗜酸性,核小,染色质丰富.有些管腔内含有无定形嗜酸性物质.细胞无异形或轻度异形, Microcystic adnexal carcinoma (MAC) is a newly described tumor, which has local clinical invasiveness and is easy to relapse after resection. This paper reports an 82-year-old, female MAC patient. Light microscopy histopathology: tumor It consists of two components. The first type of tumor cells are solid nests, cords, or duct-like structures that are irregularly distributed throughout the dermis. The tumor cells are cubic or round, eosinophilic, and small in size. Rich in chromatin. Some lumens contain amorphous eosinophilic substances. The cells are unshaped or slightly deformed.