CT Angiography Before Embolization for Hemorrhage in Head and Neck Cancer

American Journal of Neuroradiology

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Fig 1.
Axial source image from the CTA examination demonstrates an enhancing pseudoaneurysm (arrowhead) in the large tumor mass (arrows) centered in the right tonsillar fossa.
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Fig 2.
Oblique sagittal maximum intensity reconstruction image from the CTA examination demonstrates the pseudoaneurysm (arrowheads) arising off a branch of the facial artery.
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Fig 3.
Selective DSA image with the catheter tip in the origin of the right external carotid shows reflux of contrast material into a narrowed internal carotid artery (arrows) and narrowing of the external carotid branches (arrowheads). Note that the pseudoaneurysm is not visible.
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Fig 4.
Subselective DSA image with the microcatheter tip in a proximal facial artery branch demonstrating a pseudoaneurysm (arrow). Note the presence of subtraction artifact in the anterior aspect of the pseudoaneurysm (arrowhead).