title: Synovial chondromatosis of the temporomandibular joint with calcium pyrophosphate dihydrate crystal deposition disease (pseudogout).
abstract: This report describes a very rare case of synovial chondromatosis with deposition of calcium pyrophosphate dihydrate (CPPD) crystals (pseudogout) in the temporomandibular joint (TMJ) of a 46-year-old male patient. Synovial chondromatosis is a non-neoplastic disease characterized by metaplasia of the connective tissue leading to chondrogenesis in the synovial membrane. Pseudogout is an inflammatory disease of the joints caused by the deposition of CPPD, producing similar symptoms to those observed in gout but not hyperuricaemia. Both diseases commonly affect the knee, hip and elbow joints, but rarely affect the TMJ.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Division of Reparative and Regenerative Medicine, Institute of Medical Science, Mie University Graduate School of Medicine, 2-174 Edobashi Tsu, Mie 514-8507, Japan. y-matsu@clin.medic.mie-u.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Matsumura
authors.forename: J
authors.initials: J
authors.lastname: Nomura
authors.forename: K
authors.initials: K
authors.lastname: Nakanishi
authors.forename: S
authors.initials: S
authors.lastname: Yanase
authors.forename: H
authors.initials: H
authors.lastname: Kato
authors.forename: T
authors.initials: T
authors.lastname: Tagawa
mesh_terms: D002131:Calcium Pyrophosphate / Q000032:analysis; D002805:Chondrocalcinosis / Q000000981:diagnostic imaging*; D015838:Chondromatosis, Synovial / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011862:Radiography, Panoramic; D013705:Temporomandibular Joint Disorders / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
chemical_list: D002131:Calcium Pyrophosphate