Skull Base Paraganglioma and Intracranial Hypertension

Abstract

Synovial chondromatosis is a benign disease that only rarely affects the temporomandibular joint. When it does, disease is usually confined to the joint space itself but can occasionally extend beyond the joint capsule into the parotid gland, temporal bone, or cranium. The local clinical behavior, radiographic appearance, and histopathologic features can combine to create the appearance of a malignant lesion. We report a case of synovial chondromatosis that affected the temporomandibular joint and presented as an external auditory canal mass. The lesion was thought to be a chondrosarcoma prior to the definitive resection. Pitfalls in the diagnosis and management of synovial chondromatosis are discussed.

Intra- and extracapsular synovial chondromatosis of the temporomandibular joint: Rare case and review of the literature

“…The differential diagnosis of calcified loose bodies found within TMJ includes SC, chondrosarcoma and other benign inflammatory diseases such as osteoarthritis, rheumatoid arthritis and avascular necrosis. 15 SC and synovial chondrosarcoma have many similarities in clinical, radiographic and histological features.…”