Axial CT angiogram of the head shows a large right-sided art | Figure 1
CincyKidsRad
Cincinnati Children's Radiology
Axial CT angiogram of the head shows a large right-sided arteriovenous malformation (AVM).
Intracranial vascular malformations, such as an AVM, are the most common cause of pediatric intracerebral hemorrhage. Other risk factors include patients who are anticoagulated (such as those on extracorporeal membrane oxygenation or ECMO) and brain tumors.
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Axial (Image 1) and coronal (Image 2) images from a CT angiogram show an arteriovenous malformation, AVM (arrow), at the left temporoparietal junction. The AVM is supplied by small branches of the left posterior cerebral artery and drains via a large varix (arrowhead). Digital subtraction angiography confirms the diagnosis. Cerebral arteriovenous malformations, considered developmental anomalies, are the most frequent common cause of spontaneous intracranial hemorrhage in children. One-third of such malformations bleed before age 20.
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