title: Gouty tophus causing tarsal tunnel syndrome.
abstract: Tarsal tunnel syndrome (TTS), first described in 1962, has been associated with a variety of causes, including trauma, neurilemomas, rheumatoid arthritis, and hypothyroidism. We report the first case of TTS caused by a tophaceous mass in the tarsal tunnel and review etiologies, clinical descriptions, and diagnostic studies for TTS. We also survey pseudotumor crystal-induced lesions and descriptions of tophi in unusual sites.
authors.affiliation: Division of Rheumatology, Allergy and Immunology, Department of Medicine, (A.E., N.B.A.), Department of Orthopaedic Surgery (R.H.), and the Department of Radiology (S.M.), Duke University Medical Center, Durham, North Carolina.
authors.forename: A
authors.initials: A
authors.lastname: Estrada
authors.forename: R
authors.initials: R
authors.lastname: Hall
authors.forename: S
authors.initials: S
authors.lastname: Martinez
authors.forename: N B
authors.initials: NB
authors.lastname: Allen