Fig 4. Patient 22, a 64-year-old woman presenting with HH grade I SAH and hemianopsia.

A, CT scan showing subarachnoid and intraventricular blood and a hematoma in the medial occipital lobe.

B, Lateral vertebral angiogram showing a small aneurysm on the P4 (arrow).

C, Superselective angiogram, which better demonstrates the small aneurysm.

D, Occlusion of the aneurysm including the parent artery with coils.