Related Experiment Video
Updated: May 21, 2026

Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
Published on: October 20, 2017
Juvenile pilocytic astrocytoma in association with arteriovenous malformation
M Soltanolkotabi1, S E Schoeneman, A J Dipatri
1Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. m-soltanolkotabi@northwestern.edu
Abstract:
Pilocytic astrocytomas are highly vascular, relatively common primary brain tumors in the pediatric population, but their association with a true arteriovenous malformation (AVM) is extremely rare. We describe an eight-year-old girl with a right supratentorial juvenile pilocytic astrocytoma (WHO grade I) with an angiographically documented AVM entangled in the tumor mass who presented with intracranial hemorrhage due to a ruptured anterior choroidal artery pseudoaneurysm encased in the lesion. The AVM nidus as well as the hemorrhage site was embolized with Onyx. A literature review revealed only one previous report of a true intermixture of these two lesions. We hypothesize whether the association of vascular malformations and primary brain tumors are merely coincidental or if they point to the existence of a distinct entity and/or a common etiologic factor.
Related Concept Videos
Cerebral Edema ll: Pathophysiology
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Hemorrhagic Stroke ll: Pathophysiology
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Increased Intracranial Pressure ll: Pathophysiology
Hemorrhagic Stroke l: Introduction

