title: Magnetic resonance imaging of pigmented villonodular synovitis in subtalar joint. Report of a case.
abstract: Pigmented villonodular synovitis (PVNS) is rare in the foot; however, it developed in the subtalar joint extending around the ankle of a 24-year-old man. The diagnosis was made by a combination of clinical findings, most notably the aspiration of the synovial fluid. Magnetic resonance imaging was most useful in showing the extent of the soft-tissue mass before surgery. Low-signal intensity of the mass, featured on both T1- and T2-weighted images, was suggestive of PVNS.
authors.affiliation: Division of Orthopedic Surgery, Hyogo Medical Center for Adults, Akashi, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ugai
authors.forename: K
authors.initials: K
authors.lastname: Morimoto
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013380:Subtalar Joint / Q000473:pathology; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis*