title: Synovial osteochondromatosis of the temporo-mandibular joint.
abstract: A rare case of synovial osteochondromatosis of the temporo-mandibular joint is presented. Important diagnostic information can be obtained by CT, MRI, 99m Tc bone scan and aspiration biopsy. Observation using a light microscope showed mild cellular atypia, but the hallmarks characteristic of chondrosarcoma were not found. Observation using an electron microscope showed the mature chondrocytes contained a well-developed rough endoplasmic reticulum. Histological evaluation indicated that the present case was benign synovial osteochondromatosis in an early stage.
authors.affiliation: Department of Otolaryngology, School of Medicine, Chiba University, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Nomoto
authors.forename: K
authors.initials: K
authors.lastname: Nagao
authors.forename: T
authors.initials: T
authors.lastname: Numata
authors.forename: A
authors.initials: A
authors.lastname: Konno
authors.forename: T
authors.initials: T
authors.lastname: Kaneko
mesh_terms: D000328:Adult; D015838:Chondromatosis, Synovial / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed