title: Osteochondroma with secondary synovial chondromatosis in the temporomandibular joint.
abstract: Osteochondroma with secondary synovial chondromatosis is rare in the temporomandibular joint (TMJ), so we retrospectively reviewed 210 such patients who presented to our hospital from 2001-2013. The final sample included 3 patients with secondary synovial chondromatosis (mean (SD) age 40 (??) years), all of whom had symptoms of disorders of the TMJ. Condylar neoplasms and loose bodies were found during operation. Histopathological examination showed a bony growth capped with hyaline cartilage and clustering chondrocytes, with partial calcification and ossification of the loose bodies, and primary osteochondroma with secondary synovial chondromatosis was diagnosed. There were no recurrences during a follow-up that ranged from 3 months to 5 years. The presence of loose calcified bodies in osteochondroma is a possible sign of secondary synovial chondromatosis.
authors: Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China, 200011.
authors: Yiwen
authors: Y
authors: Wang
authors: Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China, 200011; Department of Stomatology, Huashan Hospital, Fudan University.
authors: Lingzhi
authors: L
authors: Li
authors: Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China, 200011. Electronic address: chenminjie00@126.com.
authors: Minjie
authors: M
authors: Chen
authors: Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China, 200011.
authors: Chi
authors: C
authors: Yang
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000473:pathology / Q000601:surgery*; D015838:Chondromatosis, Synovial / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D007594:Joint Loose Bodies; D008297:Male; D009364:Neoplasm Recurrence, Local; D015831:Osteochondroma; D013704:Temporomandibular Joint; D013705:Temporomandibular Joint Disorders
keywords: Loose bodies; Osteochondroma; Synovial chondromatosis; Temporomandibular joint