Development of chronic encapsulated intracerebral hematoma after radiosurgery for a cerebral arteriovenous malformation.
BACKGROUND
We report a rare case of chronic encapsulated intracerebral hematoma (CEIH) after radiosurgery for a cerebral arteriovenous malformation (AVM).


METHODS
Seven years after radiosurgery, magnetic resonance imaging revealed a high-intensity mass in the right basal ganglia with a peripheral low signal ring and fluid level on both T1- and T2-weighted images, which was compatible with CEIH.


RESULTS
Stereotactic evacuation and placement of an Ommaya reservoir were performed.


CONCLUSIONS
The concentration of vascular endothelial growth factor was high in the hematoma, suggesting that CEIH may be similar to chronic subdural hematoma.
Takeuchi
Satoru
S
Department of Neurosurgery, National Hospital Organization Disaster Medical Center, Tachikawa-shi, Tokyo 190-0014, Japan. s.takeuchi@room.ocn.ne.jp
Takasato
Yoshio
Y
Masaoka
Hiroyuki
H
Hayakawa
Takanori
T
Otani
Naoki
N
Yoshino
Yoshikazu
Y
Yatsushige
Hiroshi
H
Sugawara
Takashi
T
D001479:Basal Ganglia / Q000098:blood supply / Q000473:pathology / Q000601:surgery*; D015415:Biomarkers / Q000032:analysis / Q000378:metabolism; D002536:Cerebral Arteries / Q000000981:diagnostic imaging / Q000473:pathology / Q000528:radiation effects*; D002543:Cerebral Hemorrhage / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D002648:Child; D002908:Chronic Disease; D005260:Female; D006408:Hematoma, Subdural / Q000378:metabolism / Q000503:physiopathology; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D019635:Neurosurgical Procedures / Q000379:methods; D010291:Paresis / Q000209:etiology; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D016634:Radiosurgery / Q000009:adverse effects* / Q000379:methods; D012086:Reoperation; D013238:Stereotaxic Techniques; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D042461:Vascular Endothelial Growth Factor A / Q000032:analysis / Q000378:metabolism
D015415:Biomarkers; D042461:Vascular Endothelial Growth Factor A