Long-term results of radiosurgery for arteriovenous malformation: neurodiagnostic imaging and histological studies of angiographically confirmed nidus obliteration.
Detailed follow-up results for 25 patients treated for cerebral arteriovenous malformation (AVM) with a gamma unit are presented. Complete nidus obliteration was angiographically confirmed in 16 (73%) of 22 cases receiving full-dose irradiation. There were no radiation- or AVM-related mortalities. However, we did experience one case of radiation-related morbidity and one of angiography-related mortality, the autopsy findings of which are discussed. Computed tomography scan and magnetic resonance imaging follow-up studies of radiosurgically treated AVMs indicated that increased enhancement of the nidus after contrast or gadolinium administration could persist even after obliteration of the AVM was angiographically confirmed.
Yamamoto
M
M
Department of Neurosurgery, Dai-ni Hospital, Tokyo, Japan.
Jimbo
M
M
Kobayashi
M
M
Toyoda
C
C
Ide
M
M
Tanaka
N
N
Lindquist
C
C
Steiner
L
L
D000293:Adolescent; D000328:Adult; D001344:Autopsy; D002533:Cerebral Angiography; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000473:pathology* / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D016634:Radiosurgery / Q000009:adverse effects; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome