Progressive thrombosis of unruptured aneurysms after coil embolization: analysis of 255 consecutive aneurysms.
J Neurointerv Surg
; 11(11): 1113-1117, 2019 Nov.
Article
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| MEDLINE
| ID: mdl-30975739
ABSTRACT
INTRODUCTION:
We have observed that aneurysms treated by insufficient coil embolization and filled with contrast agent immediately after the procedure are often completely occluded at follow-up. However, there are limited studies showing progressive thrombosis of aneurysms after coil embolization. Herein, we describe our experience with coil embolization for aneurysms, and discuss the factors involved in progressive thrombosis.METHODS:
A total of 255 aneurysms treated by coil embolization in our institute between January 2011 and June 2017 and observed >6 months were included. 'Progressive thrombosis' indicated that aneurysms that were neck remnant (NR) or dome filling (DF) immediately after coil embolization changed to complete obliteration (CO) at the 6-month follow-up digital subtraction angiography. The factors involved in progressive thrombosis were assessed.RESULTS:
In all aneurysms (n=255), 24 (9.4%) were CO, 82 (32.2%) were NR, and 149 (58.4%) were DF immediately after the procedure. At 6-month digital subtraction angiography, 123 (48.2%) were CO, 95 (37.3%) were NR, and 37 (14.5%) were DF. Retreatment for major recanalization was performed in eight cases (3.1%). One hundred and three aneurysms showed progressive thrombosis. There were significant differences in aneurysm location (P=0.0002), aneurysm dome diameter (P=0.0015), aneurysm neck diameter (P=0.0068), volume embolization ratio (P=0.0054), and endovascular procedure with stent (P=0.0264) between the progressive thrombosis and no thrombosis groups.CONCLUSIONS:
Progressive thrombosis can occur in aneurysms after coil embolization depending on aneurysm location and size, and stent use. Thus, the degree of coil embolization and combination with a stent should be adjusted depending on aneurysm type.Palabras clave
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Base de datos:
MEDLINE
Asunto principal:
Trombosis
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Prótesis Vascular
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Aneurisma Intracraneal
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Progresión de la Enfermedad
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Embolización Terapéutica
Tipo de estudio:
Observational_studies
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Prognostic_studies
Idioma:
En
Revista:
J Neurointerv Surg
Año:
2019
Tipo del documento:
Article