Left-sided trigeminal neuralgia s/p radiofrequency thermocoagulation x2, now with recurrent symptoms, who is referred to discuss radiosurgery. There is a venous structure that loops along the inferior aspect of the root entry zone of the left trigeminal nerve. The right trigeminal nerve appears to be unremarkable. There is no evidence of intracranial hemorrhage or mass. The ventricles and sulci and mildly prominent diffusely, suggestive of cerebral volume loss. There is no midline shift or herniation. The skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable. There are bilateral lens implants. There is partially-imaged prominent probable torus mandibularis on the right.
Findings suggestive of left trigeminal nerve venous vascular loop syndrome.