title: Giant Solitary Synovial Osteochondroma of the Subtalar Joint.
abstract: A rapidly progressing calcified mass was found in the left sinus tarsi in a 12-year-old female after a trivial ankle sprain. The lesion mimicked an aggressive lesion clinically and radiographically. Ultrasound-guided biopsy confirmed the diagnosis of a synovial chondroma. Excision of the tumor and partial synovectomy were performed. The histologic diagnosis was a solitary synovial osteochondroma. The condition had not recurred after a follow-up period of 12 months.
authors.affiliation: Consultant, Department of Orthopaedics and Traumatology, North District Hospital, Sheung Shui, New Territory, Hong Kong SAR, China. Electronic address: luithderek@yahoo.co.uk.
authors.forename: Tun Hing
authors.initials: TH
authors.lastname: Lui
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis* / Q000601:surgery; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D019637:Orthopedic Procedures / Q000379:methods*; D015831:Osteochondroma / Q000175:diagnosis* / Q000601:surgery; D013380:Subtalar Joint; D013583:Synovial Membrane; D014057:Tomography, X-Ray Computed
keywords: calcaneus; malignant; osteochondroma; synovial chondroma; talus