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CT demonstrates a very large right hemispheric mass, which is markedly heterogeneous in attenuation, with both cystic and hyperdense components; the latter representing hemorrhagic components (see MRI). Following administration of contrast, the mass enhances heterogeneously. Large feeding vessels can be appreciated, including (within the limitations of a non-CTA study) external carotid artery (both superficial temporal artery branches which pass through the thinned parietal bone, and middle meningeal which is markedly enlarged) and middle cerebral artery.