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Figure 3: (a) Delayed phase of left external carotid angiography shows tumor stain (arrow) consistent with the left sphenoid sinus lesion. (b) Selective angiography of a branch of the left middle meningeal artery shows an early filling of the draining vein (arrow)

Figure 3: (a) Delayed phase of left external carotid angiography shows tumor stain (arrow) consistent with the left sphenoid sinus lesion. (b) Selective angiography of a branch of the left middle meningeal artery shows an early filling of the draining vein (arrow)