title: Giant extraskeletal chondroma of the index finger: a case report.
abstract: We report a case of giant extraskeletal chondroma arising from the index finger. The patient, a 62-year-old man, noticed the tumour in his right index finger about 30 years ago. X-ray and computed tomography (CT) scan revealed a 5-cm calcified soft-tissue tumour on the radial side of the proximal phalanx without any destruction of the cortex. Magnetic resonance imaging (MRI) showed iso-signal intensities on T1-weighted image (WI), spotted high-signal intensities on T2 WI and no enhanced areas after gadolinium injection. Because these studies could not definitively determine whether the tumour was benign or malignant, we performed a needle biopsy. As we suspected extraskeletal chondroma, we performed a marginal excision. The tumour adhered to the A1 pulley. Pathological diagnosis was extraskeletal chondroma, as expected. Approximately 80% of extraskeletal chondromas arise in hands or feet. Most reported cases are <3 cm. Literature review failed to uncover any cases larger than the tumour in our patient.
authors: Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa City, Ishikawa Prefecture, Japan. suganumaseigo1978@yahoo.co.jp
authors: Seigo
authors: S
authors: Suganuma
authors: Kaoru
authors: K
authors: Tada
authors: Hiroyuki
authors: H
authors: Tsuchiya
mesh_terms: D002812:Chondroma / Q000175:diagnosis / Q000601:surgery*; D005385:Fingers; D006801:Humans; D008297:Male; D008875:Middle Aged; D012983:Soft Tissue Neoplasms / Q000175:diagnosis / Q000601:surgery*