title: Villonodular synovitis with synovial chondromatosis.
abstract: Pigmented villonodular synovitis and synovial chondromatosis are uncommon benign lesions involving the articular surfaces of diarthrodial joints. Reported is a case of a benign synovial lesion of the temporomandibular joint, which was clinically thought to be a malignant parotid compartment tumor, showing histologic features of both pigmented villonodular synovitis and synovial chondromatosis. A review of the literature reveals a single case in which cartilaginous bodies were found in the joint; however, the synovial tissue showed features of only villonodular synovitis, with no mention of cartilaginous foci.
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure; D002812:Chondroma / Q000150:complications* / Q000473:pathology; D003593:Cytoplasm / Q000648:ultrastructure; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000150:complications* / Q000473:pathology; D008875:Middle Aged; D010860:Pigments, Biological; D013583:Synovial Membrane; D013585:Synovitis / Q000150:complications* / Q000473:pathology; D013704:Temporomandibular Joint
chemical_list: D010860:Pigments, Biological