title: Diagnosis of dorsal interosseous pseudotumours by magnetic resonance imaging.
abstract: Two middle-aged-patients each presenting with a progressively enlarging mass in the first dorsal web space of their hands are reported. Magnetic resonance imaging (MRI) demonstrated the cause to be a hypertrophic first dorsal interosseous muscle, with normal T1, T2 and post-gadopentetate dimeglumine signal characteristics. The ability of MRI to diagnose anatomical variants of hand muscles is important in the clinical management of patients with these pseudotumours.
authors.affiliation: Department of Diagnostic Radiology, University of Hong Kong, Queen Mary Hospital, Hong Kong. wcgpeh@hkucc.hku.hk
authors.forename: W C
authors.initials: WC
authors.lastname: Peh
authors.forename: W Y
authors.initials: WY
authors.lastname: Ip
authors.forename: L L
authors.initials: LL
authors.lastname: Wong
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006104:Granuloma, Plasma Cell / Q000175:diagnosis*; D006225:Hand / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000473:pathology*; D009135:Muscular Diseases / Q000175:diagnosis*