PMC7547762_01
Brian computed tomography (CT) image (A) showing a left thalamic hemorrhage (asterisk) adjacent to a calcified lesion (arrowhead), extending into the ventricular system. Head CT image on day 20 (B) showing that the hematoma was spontaneously resolved and the adjacent calcifications (arrowhead) existed.
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Non-contrast brain computed tomography (CT) revealed a left thalamic hemorrhage with an adjacent calcified lesion and intraventricular hemorrhage (Figure 1A). CT revealed the disappearance of the hematoma (Figure 1B). Catheter-based angiography showed an AVM fed by a tortuous AOP arising from the left PCA and draining upward through the left internal cerebral vein into the vein of Galen (Figure 2).
Catheter-based angiograms (A-D) revealing an artery of Percheron (arrow) arising from the left posterior cerebral artery (PCA), running upward, then taking a marked tortuous course, and feeding an arteriovenous malformation (AVM, arrowhead) in the left thalamus. The AVM drained into the vein of Galen through the left internal cerebral vein. Please note that the ipsilateral P1 segment of the PCA was not absent or hypoplastic.
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CT revealed the disappearance of the hematoma (Figure 1B). Catheter-based angiography showed an AVM fed by a tortuous AOP arising from the left PCA and draining upward through the left internal cerebral vein into the vein of Galen (Figure 2).