Left trigeminal neuralgia. A venous structure appears to abut and perhaps mildly indent the superolateral aspect of the cisternal segment of the left trigeminal nerve. The cavernous sinuses and Meckel caves appear to be intact. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There are minimal nonspecific cerebral white matter T2 hyperintense foci. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major arterial flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Potential venous vascular loop syndrome affecting the left trigeminal nerve cisternal segment. Otherwise, no evidence of intracranial mass lesions.