Table 3:

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).