[Basal Ganglia Arteriovenous Malformation in an Elderly Patient Presented with Putaminal Hemorrhage, Diagnosed after Hematoma Evacuation by Imaging: A Case Report].

A 67-year-old male patient presented with disturbance of consciousness, anisocoria, and right hemiparesis. Computed tomography (CT) scans demonstrated a large putaminal hemorrhage on the left. An emergent operation was performed and the hematoma was removed. Postoperative magnetic resonance angiographic (MRA) images and carotid angiography (CAG) revealed a basal ganglia arteriovenous malformation (AVM). The AVM was resected completely. Putaminal hemorrhages due to basal ganglia AVM rupture are very rare in the elderly. Although most AVMs are angiographically occult, in the current case, the AVM was diagnosed using MRA and CAG. Thus, preoperative examination such as MRA and 3D-CT angiography should be performed in putaminal hemorrhages, even in the elderly. (Received April 22, 2016; Accepted September 7, 2016; Published January 1, 2017).