title: Atypical fibroxanthoma.
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D005350:Fibroma / Q000175:diagnosis* / Q000473:pathology; D005354:Fibrosarcoma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged