Navigation-Guided Resection for a Tenosynovial Giant Cell Tumor Involving the Temporomandibular Joint and Skull Base

Tenosynovial giant cell tumor is a very rare, benign lesion from the synovium. It seldom happens in the temporomandibular joint area and skull base that is difficult to resect and reconstruct. We present a case treated with computer-assisted navigation to help mark the tumor boundaries, protect vital structures, and facilitate the reconstruction process. Follow-up at 6 months after surgery showed no tumor recurrent and good temporomandibular joint function.