title: Synovial chondromatosis of the temporomandibular joint: CT and MRI findings.
abstract: We report a rare case of synovial chondromatosis of the temporomandibular joint (TMJ) in a 31-year-old man. CT examination showed a mixed soft tissue mass with small calcifications near the right TMJ joint space. MR images revealed a heterogeneous mass on the different sequences and, after contrast administration, originating in the right TMJ. Cytology showed chondroid cellularity. The lesion was surgically removed and final histological study demonstrated the diagnosis of a synovial chondromatosis. We highlight the importance of the complementary findings from CT and MR, especially the important specific feature described for TMJ synovial chondromatosis related to the mixed density within the mass, in order to perform an accurate preoperative diagnosis whenever there is an absence of ossified loose bodies.
authors.affiliation: Department of Radiology and Institut de Diagnòstic per la Imatge, Hospital de Girona, Dr Josep Trueta, Av. França s/n, Girona-17007, Spain. 34876ebc@comb.es
authors.forename: E
authors.initials: E
authors.lastname: Balliu
authors.forename: V
authors.initials: V
authors.lastname: Medina
authors.forename: Jc
authors.initials: J
authors.lastname: Vilanova
authors.forename: I
authors.initials: I
authors.lastname: Peláez
authors.forename: J
authors.initials: J
authors.lastname: Puig
authors.forename: J M
authors.initials: JM
authors.lastname: Trull
authors.forename: S
authors.initials: S
authors.lastname: Pedraza
mesh_terms: D000328:Adult; D044963:Biopsy, Fine-Needle; D002114:Calcinosis / Q000175:diagnosis; D015838:Chondromatosis, Synovial / Q000175:diagnosis*; D003287:Contrast Media; D005682:Gadolinium; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D008297:Male; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D005682:Gadolinium