Cyst-like Combined Dermatofibroma: Aneurysmal and Atypical Variants / 대한피부과학회지

Dermatofibroma is a common benign fibrohistiocytic tumor that mainly presents as a brown papule or nodule. However, it can sometimes present with diverse clinical forms such as a cyst. Combined dermatofibroma is defined as a tumor that comprises two or more variants of dermatofibroma in a single lesion. We herein report on a case of combined dermatofibroma in a 40-year-old woman who presented with a cyst form on her lateral neck. The histological findings included the combined features of the aneurysmal and atypical variants of dermatofibroma such as cleft-like spaces with hemorrhage, some pleomorphic cells and multinucleated giant cells, as well as a feature of typical dermatofibroma.