Summary of treatment with Willis covered stent in 8 patients with recurrent aneurysm after coiling
| Case No. | Age, y/ gender | Type of Aneurysm | Aneurysm Size/Recurrent sac/Neck, mm | Location | Residual Neurologic Symptoms | Result of Initial Coiling | Type of Recurrence | Covered Stent, mm | Immediate Angiographic Result | Angiographic Follow-Up Result/Period, mo | Neurologic Follow-Up Result/Period, mo |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1† | 39/M | Giant/saccular | 26/11/6 | R/C7 | Diplopia and right eyesight degradation | Partial | Enlargement of residual sac | 3.5 × 10, 4 × 7, 4 × 7 | Good | Disappearance of AN, patency of PA/16 | Fully recovered/30 |
| 2‡ | 48/M | Large/pseudo | 18/10/5 | R/C3 | III, IV, VI nerve paralysis, diplopia, and tinnitus | Total/near total | Reopen | 4 × 10 | Excellent | Disappearance of AN, patency of PA/12 | Improved/30 |
| 3 | 38/M | Giant/pseudo | 25/10/4 | L/C7 | Left eyesight loss | Partial | Enlargement of residual sac | 4 × 10 | Excellent | Disappearance of AN, patency of PA/12 | Unchanged/27 |
| 4 | 49/F | Small/saccular | 5/2/3 | L/C7 | None | Subtotal | Enlargement of residual sac | 4 × 10 | Excellent | Disappearance of AN, stenosis of PA/6 | Unchanged/25 |
| 5 | 49/F | Small/saccular | 3/2/2 | R/C7 | Repeated headache | Total/near total | Reopen | 4 × 7 | Good | Disappearance of AN, patency of PA/12 | Fully recovered/20 |
| 6* | 51/M | Middle/dissecting | 8/15/10 | R/V4 | Intermittent headache | Subtotal | Enlargement of residual sac | 4 × 13, 4 × 16 | Excellent | Disappearance of AN, patency of PA/3 | Fully recovered/6 |
| 7 | 42/F | Giant/saccular | 28/10/5 | R/C4 | Diplopia | Total/near total | Reopen | 3.5 × 7 | Excellent | Disappearance of AN, patency of PA/1 | Fully recovered/1 |
| 8 | 33/F | Small/saccular | 5/3/2 | L/C7 | Headache | Subtotal | Enlargement of residual sac | 3.5 × 7 | Excellent | Disappearance of AN, patency of PA/1 | Fully recovered/1 |
Note:—The classification of internal carotid artery is based on the Bouthillier segment. Pseudo indicates pseudoaneurysm; Total/near total, occlusion rate from 95% to 100%; Subtotal, occlusion rate from 80% to 95%; Partial, occlusion rate less than 80%; AN, aneurysm; PA, parent artery; R, right; L, left.
* More than 1 stent was used to cover the orifice of aneurysm.
† The information in Case 1 was used in Neuroradiology.24
‡ The information in Case 2 was used in Neuroradiology.21,24