title: Pathology quiz case 3. Atypical fibroxanthoma (AFX).
authors.affiliation: Harvard Medical School, Boston, Massachusetts, USA.
authors.forename: David P
authors.initials: DP
authors.lastname: Guo
authors.forename: Regan W J
authors.initials: RW
authors.lastname: Bergmark
authors.forename: Harrison W
authors.initials: HW
authors.lastname: Lin
authors.forename: William C
authors.initials: WC
authors.lastname: Faquin
authors.forename: Robert A
authors.initials: RA
authors.lastname: Frankenthaler
mesh_terms: D001706:Biopsy; D003937:Diagnosis, Differential; D005260:Female; D006258:Head and Neck Neoplasms / Q000473:pathology*; D018219:Histiocytoma, Benign Fibrous / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D012535:Scalp; D012878:Skin Neoplasms / Q000473:pathology*