title: Synovial osteochondromatosis accompanying an ossified articular disk in the temporomandibular joint: a case report.
abstract: A 51-year-old woman was referred for pain in the right temporomandibular joint (TMJ) and the trismus. Conventional radiography showed a radiopaque area in the disk, which suggested calcification. At surgery, multiple, round-to-ovoid cartilagenous nodules were found in the joint cavity. Synovectomy and diskectomy were carried out via a pre-auricular incision to remove the nodules. Examination under light microscopy confirmed the diagnosis of synovial osteochondromatosis (SOC). The disk contained a large ossified mass. To our knowledge, this is the first reported example of SOC accompanied by ossification of a large part of the disk.
authors.affiliation: Second Department of Oral and Maxillofacial Surgery, Kyushu Dental College, Kitakyushu City, Fukuoka, Japan. shibuya@kyu-dent.ac.jp
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Shibuya
authors.forename: Koji
authors.initials: K
authors.lastname: Kino
authors.forename: Yuri
authors.initials: Y
authors.lastname: Kitamura
authors.forename: Testu
authors.initials: T
authors.lastname: Takahashi
mesh_terms: D015838:Chondromatosis, Synovial / Q000175:diagnosis* / Q000601:surgery; D005157:Facial Pain / Q000175:diagnosis; D005260:Female; D006801:Humans; D007594:Joint Loose Bodies / Q000601:surgery; D008875:Middle Aged; D009999:Ossification, Heterotopic / Q000175:diagnosis* / Q000601:surgery; D019224:Temporomandibular Joint Disc / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis* / Q000601:surgery