Cutaneous Myoepithelioma: A Case Report of an Unusual and Recently Recognized Entity
Myoepitheliomas and mixed tumors were only recently recognized to occur primarily in soft tissue, and only small case numbers have been described. The present case is a 25‑year‑old male who had solitary, painless mass over the right middle finger, measuring 3 cm in greatest dimensions, and light microscopy revealed a tumor composed of a mixed population of the spindle, epithelioid, and plasmacytoid cells arranged around a central chondromyxoid stroma. No definite diagnosis could be reached on this morphology, and initial diagnosis of benign mixed stromal tumor was considered. Immunohistochemistry was performed and the tumor showed strong positivity for calponin and smooth muscle actin, Ki‑index showed low index, weak, and focal positivity for S‑100 and negative for pan‑cytokeratin. The final diagnosis of benign myoepithelioma was entertained.