Hemifacial spasm as a feature of Chiari malformation: case report.

Background And Importance: Hemifacial spasm has rarely been described as one of the presenting features of Chiari I malformation. We present a case in which we found an association between the two in the absence of a basilar impression.

Clinical Presentation: A case of a 39-year-old man who presented with a disabling hemifacial spasm and was found to have Chiari I malformation as the possible cause is described.

Venous anastomotic circle, multiple varices and oculomotor palsy--a rare coincidence.

Oculomotor nerve palsy due to a venous varix arising from flow anomalies caused by a dural arteriovenous fistula (AVF) is a rare phenomenon. We report a case of surgical third nerve palsy with a rare underlying AVF as the cause and discuss in detail the patho-anatomy and its significance. A tentorial dural AVF mimicking the arterial circle was found with multiple varix formation causing compressive oculomotor palsy.