title: Case reports: enlargement of a calcaneal osteochondroma after skeletal maturity.
abstract: Growth or radiologic modification of an osteochondroma after the epiphyseal plate closes suggests the diagnosis of malignant transformation to a chondrosarcoma. However, extensive growth of an osteochondroma in a skeletally mature patient whose tumor proved benign has been reported. We report a similar case in an adult who had a solitary osteochondroma of the calcaneus. The lesion showed marked growth and was removed. Histologic examination showed no evidence of malignancy, and there was no recurrence during the 4-year followup.
authors.affiliation: Department of Orthopaedics, Cochin Teaching Hospital, Paris, France. alexis.nogier@wanadoo.fr
authors.forename: Alexis
authors.initials: A
authors.lastname: Nogier
authors.forename: Gonzague
authors.initials: G
authors.lastname: De Pinieux
authors.forename: Gabriella
authors.initials: G
authors.lastname: Hottya
authors.forename: Philippe
authors.initials: P
authors.lastname: Anract
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000601:surgery; D002111:Calcaneus; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008297:Male; D009367:Neoplasm Staging; D015831:Osteochondroma / Q000175:diagnosis* / Q000601:surgery; D018570:Risk Assessment; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome