Summary of eight patients with intracranial pseudoaneurysms treated with the Willis covered stent

Case No./Age /Sex	Presenting Symptoms	Cause	Aneurysm Location	Aneurysm Size (mm)	Stent Size (mm)	Resistance Reaching Target Lesion	Immediate Angiography, Poststenting	Follow-Up (mos)	Follow-Up Angiography	Clinical Outcome
1/48/M	Headache, diplopia, decreased visual acuity	Post-balloon occlusion of CCF	Right C3	10 × 8	4 × 10	None	PA resolution, parent artery patency	12	PA resolution, parent artery patency	Improvement
2/38/M	Left eye blindness	Trauma	Left C4	15 × 12	4 × 10	No apparent resistance	PA resolution, parent artery patency	5	PA resolution, parent artery patency	Unchanged
3/34/M	Palsy	Post-balloon occlusion of CCF	Right C4	15 × 12	5 × 13	None	PA resolution, small CCF	6	PA resolution, CCF alleviation	Improvement
4/50/M	Palsy	Post-balloon occlusion of CCF	Right C4	23 × 16	4 × 13	None	PA resolution, parent artery patency	6	PA resolution, parent artery patency	Full recovery
5/35/M	Epistaxis	Trauma	Left C5	22 × 18	4 × 10	None	Minimal endoleak into PA, parent artery patency	6	Residual cavity shrinkage, parent artery patency	Full recovery
6/23/M	No symptoms	Post-balloon occlusion of CCF	Left C4	15 × 12	4 × 13	None	PA resolution, parent artery patency	3	PA resolution, parent artery patency	Full recovery
7/60/M	Headache, Ptosis	Trauma	Left C6	30 × 15	3.5 × 13 3.5 × 10	None	Minimal endoleak into PA, parent artery patency	3	Residual cavity shrinkage, parent artery patency	Improvement
8/11/M	Decreased visual acuity	Trauma	Right C7	18 × 10	3.5 × 10	None	PA resolution, parent artery patency	3	PA resolution, parent artery patency	Full recovery

Note:—CCF indicates carotid cavernous fistula; PA, pseudoaneurysm.