label: Atypical Fibroxanthoma
label_lc: atypical fibroxanthoma
description: "An intermediate cutaneous mesenchymal neoplasm of uncertain differentiation, usually affecting the actinic-damaged skin of the elderly.  The tumor presents as a single cutaneous nodule which is often ulcerated.  Microscopically, it is characterized by the presence of highly atypical cytologic features, pleomorphism and abundant mitotic figures. The vast majority of patients have an excellent prognosis following conservative therapy. Recurrences are infrequent, and metastasis is rare."