This case demonstrates good placement of a right frontal external ventricular drain, with the tip lying at the foramen of Monro in a patient with intraventricular hemorrhage. This results in a significant interval reduction of ventriculomegaly.

The patient proceeded to a cerebral angiogram the day after surgery, confirming a left temporal periventricular arteriovenous malformation. The patient was referred to a Gamma Knife center for consideration of treatment.