Abstract
Purpose: To evaluate mid-term clinical and angiographic results after using a self-expanding
neurovascular stent and coils for the management of broad-based intracranial aneurysms.
Methods: During the period from August 2001 to October 2004 we treated a total of 42 patients
with 44 aneurysms using a self-expandable stent. To date we have data on more than
6 months of follow-up in 25 patients with 26 aneurysms. Aneurysm occlusion was divided
into the following categories: 100 % (complete), 95-99 % (subtotal), and < 95 % (incomplete).
Results: In 15 aneurysms complete occlusion, in 11 aneurysms subtotal occlusion was initially
achieved. Control DSA showed progressive thrombosis in seven aneurysms leading to
total occlusion in another 4 aneurysms. Three recanalisations were observed in one
large and two giant ICA aneurysms. No vessel occlusion occurred. One vessel stenosis
of the stented segment was noted, but it was not clinically relevant. One patient
experienced a small embolic infarction after stopping antiplatelet medication. No
persistent deterioration of the clinical status occurred. Conclusion: Combining a stent with coils seems to be an acceptable treatment option for broad-based
intracranial aneurysms. As this special subgroup of treated aneurysms includes only
those with an unfavourable geometry, the results are extremely promising.
Zusammenfassung
Einleitung: Evaluation der mittelfristigen klinischen und angiographischen Ergebnisse nach Behandlung
breitbasiger intrakranieller Aneurysmen mit der Kombination eines selbst-expandierbaren
Stents und Platinspiralen. Patienten/Material und Methoden: Zwischen August 2001 und Oktober 2004 wurden insgesamt 42 Patienten mit 44 Aneurysmen
mit Hilfe eines selbst-expandierbaren Stents behandelt. 25 Patienten mit 26 Aneurysmen
konnten bisher über einen Zeitraum von mehr als 6 Monaten nachuntersucht werden. Die
Okklusionsrate der Aneurysmen wurde unterteilt in drei Gruppen: 100 % (komplett),
95-99 % (subtotal) und < 95 % (inkomplett). Ergebnisse: Unmittelbar nach der Intervention waren 15 Aneurysmen komplett und 11 subtotal verschlossen.
Bei sieben Aneurysmen wurde in der Kontrollangiographie eine zunehmende Thrombosierung
gesehen, die bei 4 Aneurysmen zum kompletten Verschluss geführt hat. Drei Rekanalisierungen
wurden in zwei Riesenaneurysmen und einem großen Aneurysma der A. carotis interna
festgestellt. Gefäßverschlüsse durch den Stent wurden nicht beobachtet, ein Patient
hatte im Verlauf eine klinisch nicht relevante Gefäßeinengung. Als Spätkomplikation
wurde ein embolischer Infarkt nach Absetzen der Plättchenhemmer gesehen. Bei keinem
Patienten kam es zu einer klinischen Verschlechterung. Schlussfolgerung: Die Behandlung breitbasiger intrakranieller Aneurysmen mit einem selbst-expandierenden
Stent und Coils ist eine Alternative, um gute mittelfristige Ergebnisse zu erzielen.
Insbesondere unter dem Aspekt der höheren Rekanalisierungsraten bei breitbasigen Aneurysmen
sind die Ergebnisse extrem vielversprechend.
Key words
intracranial aneurysm - wide-necked aneurysm - self-expanding microstent - coil embolisation
- mid-term results
Schlüsselwörter
intrakranielles breitbasiges Aneurysma - selbst-expandierbarer Stent - endovaskuläre
Therapie - mittelfristige Ergebnisse
References
1
Akiba Y, Murayama Y, Vinuela F, Lefkowitz M A, Duckwiler G R, Gobin Y P.
Balloon-assisted Guglielmi detachable coiling of wide-necked aneurysms: Part I - experimental
evaluation.
Neurosurgery.
1999;
45
519-527
2
Aletich V A, Debrun G M, Misra M, Charbel F, Ausman J I.
The remodeling technique of balloon-assisted Guglielmi detachable coil placement in
wide-necked aneurysms: experience at the University of Illinois at Chicago.
J Neurosurg.
2000;
93
388-396
3
Cohen J E, Ferrario A, Ceratto R, Miranda C, Lylyk P.
Reconstructive endovascular approach for a cavernous aneurysm in infancy.
Neurol Res.
2003;
25
492-496
4
Doerfler A, Wanke I, Egelhof T. et al .
Aneurysmal rupture during embolization with Guglielmi detachable coils: causes, management,
and outcome.
AJNR Am J Neuroradiol.
2001;
22
1825-1832
5
Higashida R T, Smith W, Gress D. et al .
Intravascular stent and endovascular coil placement for a ruptured fusiform aneurysm
of the basilar artery. Case report and review of the literature.
J Neurosurg.
1997;
87
944-999
6
Horowitz M B, Miller G, Meyer Y, Carstens G, Purdy P D.
Use of intravascular stents in the treatment of internal carotid and extracranial
vertebral artery pseudoaneurysms.
AJNR Am J Neuroradiol.
1996;
17
693-696
7
Howington J U, Hanel R A, Harrigan M R, Levy E I, Guterman L R, Hopkins L N.
The Neuroform stent, the first microcatheter-delivered stent for use in the intracranial
circulation.
Neurosurgery.
2004;
54
2-5
8
Lopes D, Sani S.
Histological postmortem study of an internal carotid artery aneurysm treated with
the Neuroform stent.
Neurosurgery.
2005;
56
E416
9
Lylyk P, Cohen J E, Ceratto R, Ferrario A, Miranda C.
Combined endovascular treatment of dissecting vertebral artery aneurysms by using
stents and coils.
J Neurosurg.
2001;
94
427-432
10
Lylyk P, Cohen J E, Ceratto R, Ferrario A, Miranda C.
Endovascular reconstruction of intracranial arteries by stent placement and combined
techniques.
J Neurosurg.
2002;
97
1306-1313
11
Lylyk P, Ferrario A, Pasbon B, Miranda C, Doroszuk G.
Buenos Aires experience with the Neuroform self-expanding stent for the treatment
of intracranial aneurysms.
J Neurosurg.
2005;
102
235-241
12
Molyneux A, Kerr R, Stratton I. et al .
International Subarachnoid Aneurysm Trial (ISAT) of neurosurgical clipping versus
endovascular coiling in 2 143 patients with ruptured intracranial aneurysms: a randomised
trial.
Lancet.
2002;
360
1267-1274
13
Moret J, Cognard C, Weill A, Castaings L, Rey A.
[Reconstruction technique in the treatment of wide-neck intracranial aneurysms. Long-term
angiographic and clinical results. Apropos of 56 cases].
J Neuroradiol.
1997;
24
30-44
14
Phatouros C C, Sasaki T Y, Higashida R T. et al .
Stent-supported coil embolization: the treatment of fusiform and wide-neck aneurysms
and pseudoaneurysms.
Neurosurgery.
2000;
47
107-113
, discussion 113 - 115
15
Raymond J, Guilbert F, Weill A. et al .
Long-term angiographic recurrences after selective endovascular treatment of aneurysms
with detachable coils.
Stroke.
2003;
34
1398-1403
16
Roy D, Milot G, Raymond J.
Endovascular treatment of unruptured aneurysms.
Stroke.
2001;
32
1998-2004
17
Sandalcioglu I E, Wanke I, Schoch B. et al .
Endovascularly or surgically treated vertebral artery and posterior inferior cerebellar
artery aneurysms: clinical analysis and results.
Zentralbl Neurochir.
2005;
66
9-16
18
Sani S, Jobe K W, Lopes D K.
Treatment of wide-necked cerebral aneurysms with the Neuroform2 Treo stent. A prospective
6-month study.
Neurosurg Focus.
2005;
18
E4
19
Soeda A, Sakai N, Sakai H. et al .
Thromboembolic events associated with Guglielmi detachable coil embolization of asymptomatic
cerebral aneurysms: evaluation of 66 consecutive cases with use of diffusion-weighted
MR imaging.
AJNR Am J Neuroradiol.
2003;
24
127-132
20
Wada H, Piotin M, Boissonnet H, Spelle L, Mounayer C, Moret J.
Carotid rupture during stent-assisted aneurysm treatment.
AJNR Am J Neuroradiol.
2004;
25
827-829
21
Wanke I, Doerfler A, Schoch B, Stolke D, Forsting M.
Treatment of wide-necked intracranial aneurysms with a self-expanding stent system:
initial clinical experience.
AJNR Am J Neuroradiol.
2003;
24
1192-1199
22
Wardlaw J M, White P M.
The detection and management of unruptured intracranial aneurysms.
Brain.
2000;
123
205-221
I. WankeMD
Department of Neuroradiology · University of Essen
Hufelandstraße 55
45122 Essen
Germany
Telefon: 49/2 01/7 23 15 39
Fax: 49/2 01/7 23 59 59
eMail: isabel.wanke@uni-essen.de