Clinical presentation and outcomes of coil embolization of remnant or recurred intracranial aneurysm after clipping.
OBJECTIVE
To evaluate clinical presentation, safety, techniques, clinical and angiographic outcomes, and prognostic factors of coiling for remnant/recurred aneurysm after clipping.


METHODS
Twenty-four consecutive patients (11 men and 13 women; mean age, 52 years) with 24 recurred/remnant aneurysms after clipping underwent coil embolization between September 2000 and December 2008. Clinical presentations of remnant/recurred aneurysms, safety, techniques, clinical and angiographic outcomes, and prognostic factors of coil embolization were retrospectively evaluated.


RESULTS
Twenty-two aneurysms initially presented with subarachnoid hemorrhage and the other two, with mass effect. Eight aneurysms presented with rebleeding and 16 aneurysms were found on follow-up CT angiogram (n = 12) or catheter angiogram (n = 4). The interval between clipping and coiling ranged from 8 days to 114 months (mean, 31 months). Twelve were treated by using single-catheter, 6 by stent-assisted, 4 by multicatheter, 1 by both balloon- and catheter-assisted, and 1 by balloon-in-stent technique. Immediate postembolization angiogram revealed complete obliteration (n = 19) or residual neck (n = 5). Procedure-related permanent morbidity and mortality rates were 4.2% (1 of 24) and 0%, respectively. There was no rebleeding during clinical follow-up for 3 to 82 months (mean, 24 months). Presentation with rupture after clipping was the only significant predictor of poor outcome (P < .05).


CONCLUSIONS
Coiling seems to be a safe and effective retreatment option for remnant/ recurred aneurysm after clipping. Presentation with rupture after clipping is the only predictor of poor outcome. For routine/regular follow-up after clipping, CT angiography may be the imaging modality advisable for detection of remnant/recurred aneurysm.
Kim
Byung Moon
BM
Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea. bmoon21@hanmail.net
Kim
Dong Joon
DJ
Kim
Dong Ik
DI
Park
Sung Il
SI
Suh
Sang Hyun
SH
Won
Yu Sam
YS
D000328:Adult; D000368:Aged; D057785:Catheters / Q000592:standards / Q000639:trends; D002536:Cerebral Arteries / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D004621:Embolization, Therapeutic / Q000295:instrumentation* / Q000379:methods*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care / Q000379:methods*; D019736:Prostheses and Implants; D011859:Radiography; D012086:Reoperation / Q000295:instrumentation / Q000639:trends; D055502:Secondary Prevention; D015607:Stents / Q000592:standards / Q000639:trends; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D014656:Vascular Surgical Procedures / Q000295:instrumentation* / Q000379:methods*