Subungual superficial angiomyxoma

Abstract

This is the first report of a subungual superficial angiomyxoma. Excision followed 12 months of lesion growth and progressive index nail-plate elevation. The encapsulated mass was separated bluntly from the nail bed undersurface, although sharp dissection was required to split the periosteal interface. Five cases of subungual myxoma have been reported. Histologically, both superficial angiomyxoma and myxoma entities contain spindle and stellate cells within a myxoid stroma. Vascular and cellular elements found only in superficial angiomyxoma were identified in the featured lesion. Recurrence rates following superficial angiomyxoma excision are greater than those of myxoma. This patient did not experience recurrence after 11 postoperative months.