title: A case of atypical fibroxanthoma of subungual type: ultrasound and magnetic resonance imaging findings.
abstract: Subungual atypical fibroxanthoma is a rare mesenchymal skin tumor of intermediate malignancy. It classically presents as a relatively nondescript, erythematous nodule; it may ulcerate and bleed, but pain and pruritus are uncommon. In the differential diagnoses of subungual tumors, glomus tumor, soft tissue chondroma, keratoacanthoma, hemangioma, lobular capillary hemangioma, epidermal and mucoid cysts, squamous cell carcinoma, and malignant melanoma have been suggested. But atypical fibroxanthoma has not been included in the differential diagnoses. We report a case that occurred in a 56-year-old man with subungual atypical fibroxanthoma mimicking malignant soft tissue tumor in the right fifth toe.
authors.affiliation: Department of Radiology, Hanyang University Hospital, Seoul 133-792, Korea.
authors.forename: Seunghun
authors.initials: S
authors.lastname: Lee
authors.forename: Kyung Bin
authors.initials: KB
authors.lastname: Joo
authors.forename: Chan-Keum
authors.initials: CK
authors.lastname: Park
authors.forename: Tae-Seung
authors.initials: TS
authors.lastname: Kim
authors.forename: Jiyoon
authors.initials: J
authors.lastname: Bae
mesh_terms: D003937:Diagnosis, Differential; D005534:Foot Diseases / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000175:diagnosis*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis; D014034:Toes / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography / Q000379:methods*; D014973:Xanthomatosis / Q000175:diagnosis*