title: Diffuse pigmented villonodular synovitis of the temporomandibular joint diagnosed by fine-needle aspiration cytology.
abstract: Diffuse pigmented villonodular synovitis is a rare tumor in the temporomandibular joint region. This article deals with a 32-yr-old male who suffered from pain and swelling in the right temporomandibular joint region associated with restricted mouth opening. Computed tomography showed a tumor lateral to the temporomandibular joint. Arthrography revealed a displaced temporomandibular joint disk. Fine-needle aspiration cytology showed characteristic cellular changes, including rounded or oval cells with abundant cytoplasm and intracytoplasmatic hemosiderin deposits and numerous multinucleated giant cells without nuclear atypia. A benign mesenchymal lesion suggestive for pigmented villonodular synovitis was diagnosed and later verified at histologic examination. Fine-needle aspiration cytology seems to be useful for this diagnosis.
authors: Department of Cytodiagnostics, University Hospital, Lund, Sweden.
authors: S
authors: S
authors: Dawiskiba
authors: L
authors: L
authors: Eriksson
authors: A
authors: A
authors: Elner
authors: C C
authors: CC
authors: Johansen
authors: L G
authors: LG
authors: Hansson
authors: P L
authors: PL
authors: Westesson
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D006801:Humans; D008297:Male; D013585:Synovitis / Q000175:diagnosis*; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery