Previous literature regarding recurrences and retreatment of aneurysms after initial coil embolization
| Author | Pts/Ayms with Angiographic F/U (%) | Mean Angiographic F/U (months) | Recurrences (%) | Retreated Aneurysms (%) | Rebleeding (p.a.) (%) | Set of Retreated Recurrences (%) | Combined M/M Recoiling (%) |
|---|---|---|---|---|---|---|---|
| Byrne 199928 | 250/317 pts (78.9) | 6–12 | 38/259 (14.7) | 13/250 (5.2) | 0.6–2.4 | 13/38 (34.2) | Not reported |
| Cognard 199936 | 169/203 ayms (83.3) | 3.4 | 26/169 (15.5) | 8/169 (4.7) | 0.0 | 8/26 (30.8) | Not reported |
| Thornton 200237 | 141/196 ayms (71.9) | 16.7 | 25/141 (17.7) | Not reported | 0.5 | Not reported | Not reported |
| Murayama 20036 | 489/916 ayms (53.4) | 11 | 102/489 (20.9) | Not reported | 0.5–1.6 | Not reported | Not reported |
| Raymond 200314 | 381/501 ayms (76.5) | Not specified* | 128/381 (33.6) | 39/381 (10.2) | 0.3 | 39/128 (30.5) | Not reported |
| Slob 200429 | 400/488 ayms (82) | 6 | Not reported | 48/400 (12) | 1.1 | Not reported | 0 |
| Henkes 200616 | 1680/2759 ayms (60.9) | Not specified† | Not reported | 350/1680 (20.8) | Not reported | Not reported | 3 |
| Gallas 20052 | 571/705 ayms (81) | 36 | 85/571 (14.9) | 33/571 (5.8) | 0.06 | 33/85 (38.8) | Not reported |
| CARAT 20069 | 299 pts with clinical F/U | Not reported | Not reported | 35/299 (11.7) | 0.11 | Not reported | 11 |
| Kang 200615 | 250/522 ayms (47.9) | 8 | 91/250 (36.4) | 32/250 (12.8) | 0.79 | 39/91 (42.8) | 0 |
| Own data | 342/627 ayms (54.5) | 28.6 | 72/342 (21.1) | 33/342 (9.6) | 0.6 | 33/72 (45.8) | 0 |
Note:—Pts indicates patients; ayms, aneurysms; F/U, follow-up; p.a., per annum; MM, morbidity and mortality.
* Early F/U (3–12 months) in 353/501 aneurysms and late F/U (>12 months) in 277/501 aneurysms.
† Standard recommendation was to have F/U angiography at 6–12 months. Mean interval between first treatment and first F/U examination was 21 months (median, 14 months).