Cutaneous myoepithelioma in the foot: case report.

Cutaneous myoepithelioma is a very rare, benign, subcutaneous and dermal tumor. It usually pres- ents as a slow-growing and painless mass on the extremities. We report a case of cutaneous myoepithelioma that was located on the foot. A 68-yearold woman presented with a slowly grow- ing pain-free mass on the right third toe measuring 0.8 × 0.7 × 0.4 cm 3 . We per- formed an elliptical excision, with his- tological and immunohistochemical analysis. The lesion showed dermis with cords of cytologically uniform ovoid cells with moderate amount of pale cytoplasm. No pleomorphism, mitotic activity, or necrosis was visualized. The tumor cells were positive for S-100 pro- tein, epithelial membrane antigen and negative for smooth-muscle actin. From these findings, the tumor was diag- nosed as a cutaneous myoepithelioma extending to the deep resection mar- gin. To our knowledge, there are only 2 documented cases in the literature in English, and none have been reported in the foot and ankle literature.