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Fig 1. A 52-year-old woman with a sphenoid ridge meningioma (case 3). A, Plain CT shows a mass with calcification in the left frontotemporal region.
B, Coronal contrast-enhanced T1-weighted image reveals a homogenous enhanced mass in the left middle fossa.
C and D, A left external carotid artery angiogram, lateral views of the early (C) and late (D) phase, reveals a tumor stain fed by the middle meningeal artery.
E, d3D-CTA (superior view). d3D-CT angiographs obtained at 10, 13, 15, 16, 18, and 20 seconds after contrast injection are shown. The tumor stain is first demonstrated in the arterial phase (at 15 seconds). d3D-CTA indicates that the blood supply to the tumor is from the sphenoid ridge. Calcifications within the tumor are shown at 10 seconds. ICA, left internal carotid artery; BA, basilar artery; SPV, sphenoparietal vein.
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