Summary of data in 10 patients with P2 segment aneurysms

Patient No./Sex/Age (y)	Aneurysm Type, Side, and Size	Presenting Symptom	Test	Treatment Type and Year	Clinical Outcome and Follow-Up Findings
1/43/M	Saccular, R, giant thrombosis	Headaches, phosphenes	Balloon occlusion	Balloon, 1990	Excellent, no headaches, phosphenes gone; at 11-mo angiography, no recanalization; MR imaging at 6 y, two-thirds reduction in aneurysmal mass
2/53/F	Saccular, R, giant thrombosis	Headaches, LHH	Balloon occlusion, clinical examination	Balloon, 1994	LHH, no headaches; at 6-mo angiography, no recanalization
3/20/M	Fusiform, L, large	Headaches	Angiography	GDC, 1996	Excellent, no headaches; at 1-y angiography, no recanalization
4/60/M	Fusiform, L, large	Headaches	Balloon occlusion	GDC, 1998	Excellent, no headaches; at 1-y angiography, no recanalization
5/49/F	Fusiform, L, giant thrombosis	Gertsmann syndrome	Angiography	GDC, 1998	Excellent, no deficit; at 1-y angiography, no recanalization
6/18/F	Saccular, L, large	SAH, hematoma	Angiography	Histoacryl, 1998	Excellent, no deficit; at 1-y angiography, no recanalization
7/49/F	Saccular, L, large	Headaches	Balloon occlusion	GDC, 1999	Excellent, no headaches; at 1-y angiography, no recanalization
8/47/M	Fusiform, L, giant thrombosis	SAH, diplopia	Balloon occlusion	GDC, 1999	Excellent, no deficit; at 1-y angiography, no recanalization
9/26/M	Serpentine, R, giant thrombosis	Headaches	Angiography	GDC, 1999	Excellent, no headaches; at 1-y angiography, no recanalization
10/70/F	Saccular, R, large	Headaches	None	None	Well 3 y after attempt

Note.—LHH indicates lateral homonymous hemianopsia; SAH, subarachnoid hemorrhage.