Internal carotid occlusion following gamma knife radiosurgery for cavernous sinus meningioma.

Details

Serval ID
serval:BIB_610FB50171C3
Type
Article: article from journal or magazin.
Publication sub-type
Case report (case report): feedback on an observation with a short commentary.
Collection
Publications
Institution
Title
Internal carotid occlusion following gamma knife radiosurgery for cavernous sinus meningioma.
Journal
Stereotactic and Functional Neurosurgery
Author(s)
Abeloos L., Levivier M., Devriendt D., Massager N.
ISSN
1423-0372 (Electronic)
ISSN-L
1011-6125
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
85
Number
6
Pages
303-306
Language
english
Notes
Publication types: Case Reports ; Journal Article
Publication Status: ppublish
Abstract
Gamma knife radiosurgery is a safe and effective treatment for cavernous sinus meningioma, associated with a very low morbidity. However, a high dose of radiation could lead to modifications of the vascular wall such as in radiosurgical treatment of arteriovenous malformations. We present a patient treated by gamma knife radiosurgery for a left cavernous sinus meningioma using a margin dose of 13 Gy at the 50% isodose. A complete occlusion of the intracavernous segment of the ICA occurred during the follow-up, in combination with a regression of the meningioma volume. The patient sustained no neurological deficit. We found that a hot spot of dose was administered to the intracavernous segment of the internal carotid artery, with a maximum dose of 22.3 Gy. Dose heterogeneity inside the target volume can produce hot spots of dose inside the internal carotid artery that can lead to a vascular occlusion. Therefore, we recommend shifting the hot spot during the dosimetry planning in order to reduce the incidence of such vascular injury.
Keywords
Adult, Carotid Artery, Internal/pathology, Carotid Artery, Internal/radiation effects, Carotid Stenosis/etiology, Carotid Stenosis/pathology, Cavernous Sinus/surgery, Female, Humans, Magnetic Resonance Imaging, Meningioma/surgery, Radiation Injuries/pathology, Radiometry, Radiosurgery/adverse effects
Pubmed
Web of science
Create date
20/01/2008 17:35
Last modification date
20/08/2019 14:18
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