Follicular Malignant Melanoma: A Rare Morphologic Variant of Melanoma. Report of a Case and Review of the Literature.

Follicular malignant melanoma (FMM) is an exceedingly rare variant of melanoma. Only 8 cases have been reported in the literature thus far. Often bland on physical examination, FMM shows a striking histologic pattern, with atypical melanocytes sometimes consuming the entire follicle and extending into the dermis.