Treatment of ruptured blood blister-like aneurysms with flow diverter SILK stents.
BACKGROUND
Blood blister-like aneurysms (BBAs) are fragile and difficult to treat. Routine surgical and endovascular treatment methods, such as clipping, clip wrapping, primary coiling, or stent assisted coiling, have relatively high morbidity and mortality rates. In this study, we report clinical and angiographic results for treatment of ruptured BBAs using flow diverter stents.


METHODS
We retrospectively reviewed patients who presented with subarachnoid hemorrhages caused by rupture of BBAs and who were treated using flow diverter stents at three neurointervention centers between January 2009 and January 2013. Clinical and angiographic findings, together with the procedural data and follow-up results, are reported.


RESULTS
11 patients were identified in this study. BBAs were located on the supraclinoid internal carotid artery (nine patients) and basilar arteries (two patients). Eight patients were treated by implantation of a single flow diverter stent. Two flow diverter stents were telescopically deployed in each of three patients. The procedures were successful in all cases. No acute complications developed in any case. One patient who had an initial Hess-Hunt grade 4 died of septicemia 2 weeks after the procedure (9%). Another patient developed a minor stroke caused by parent artery thrombosis (9%). Control angiographies performed 3 and 6 months post stenting revealed complete occlusion of the aneurysms in all of the remaining nine patients (82%). 10 of the 11 patients (92%) had good clinical outcomes (modified Rankin Scale score ≤ 2).


CONCLUSIONS
Implantation of flow diverter stents seems to be a safe and feasible alternative for treatment of ruptured BBAs.
Department of Neuroradiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
Kubilay
K
Aydin
Department of Radiology, School of Medicine, Hacettepe University, Ankara, Turkey.
Anil
A
Arat
Department of Neuroradiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
Serra
S
Sencer
Department of Radiology, Faculty of Medicine, Uludag University, Bursa, Turkey.
Bahattin
B
Hakyemez
Department of Neuroradiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
Mehmet
M
Barburoglu
Department of Neurosurgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
Altay
A
Sencer
Department of Neurosurgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
Nail
N
İzgi
D000328:Adult; D000368:Aged; D017542:Aneurysm, Ruptured / Q000000981:diagnostic imaging / Q000628:therapy*; D001768:Blister / Q000000981:diagnostic imaging / Q000628:therapy; D002560:Cerebrovascular Circulation; D057510:Endovascular Procedures / Q000295:instrumentation* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D010975:Platelet Aggregation Inhibitors / Q000008:administration & dosage*; D011859:Radiography; D012189:Retrospective Studies; D015607:Stents; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging / Q000628:therapy; D016896:Treatment Outcome
D010975:Platelet Aggregation Inhibitors
Aneurysm; Flow Diverter; Hemorrhage; Subarachnoid