[A case of cerebral arteriovenous malformation revealing repeated intranidal hemorrhage accompanying neovascularization after stereotactic radiosurgery].
We report a patient with cerebral arteriovenous malformation (AVM) revealing growing mass lesion after stereotactic radiosurgery. This 12-year-old female presented headache. CT scan showed hematoma at the head of the right caudate nucleus and angiography showed AVM at the site. LINAC-based stereotactic radiosurgery was performed with the patient. Twenty-three months after the radiosurgery the patient complained headache and CT scan showed hematoma again at the same site, although angiography did not show AVM. Thirty-five months after the radiosurgery mass lesion with enhancement effect was observed at the site and the mass lesion grew gradually thereafter. Thirty-nine months after the radiosurgery the mass lesion was evacuated. Histological examination revealed fibrotic core and surrounding neovascularized area with hemorrhage. The histology shows a new etiology of growing mass lesion after radiosurgery for AVM.
Awano
Takayuki
T
Department of Neurological Surgery, Nihon University School of Medicine, 30-1 Oyaguchi Kamimachi, Itabashi-ku, Tokyo 173-8610, Japan.
Kano
Toshikazu
T
Nagaoka
Takafumi
T
Kimura
Shigeyoshi
S
Kano
Tsuneo
T
Kido
Goro
G
Katayama
Yoichi
Y
Kotani
Akio
A
D001479:Basal Ganglia / Q000098:blood supply; D002533:Cerebral Angiography; D002543:Cerebral Hemorrhage / Q000175:diagnosis* / Q000209:etiology; D002648:Child; D005260:Female; D006406:Hematoma / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D009389:Neovascularization, Pathologic / Q000175:diagnosis* / Q000209:etiology; D011183:Postoperative Complications; D016634:Radiosurgery / Q000009:adverse effects*; D014057:Tomography, X-Ray Computed