case_images: PMC7196992_01
case_images: Sagittal view for CT head and neck with arterial phase contrast showed bilateral internal carotid artery (ICA) agenesis as shown by arrows A and B. Arrow C shows collaterals communicating with cerebral circulation that was supplied by an enlarged posterior communicating artery (POCMA) from a basilar artery (BA) and arrow D shows carotid rete mirabile from the external carotid artery.
case_images: CRIPE2020-3290460.001.jpg
case_images: PMC7196992_01_CRIPE2020-3290460.001.jpg
case_images: fig1
case_images: Multiple collaterals were seen communicating with the anterior cerebral circulation that was supplied by an enlarged posterior communicating artery (POCMA) from a basilar artery (BA) and carotid rete mirabile from the external carotid artery (Figures 1 and 2).
case_images: Skull base bone view with arrow showing obliteration for petrous bone carotid canal in the 6-year-old patient with bilateral ICA agenesis.
case_images: CRIPE2020-3290460.002.jpg
case_images: PMC7196992_01_CRIPE2020-3290460.002.jpg
case_images: fig2
case_images: Multiple collaterals were seen communicating with the anterior cerebral circulation that was supplied by an enlarged posterior communicating artery (POCMA) from a basilar artery (BA) and carotid rete mirabile from the external carotid artery (Figures 1 and 2).