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Sagittal and axial CT venogram images demonstrate filling defects (arrows) within major venous structures including posterior superior sagittal sinus and torcular Herophili (arrows), straight sinus (arrowheads), the vein of Galen, inferior sagittal sinus, the internal cerebral veins, bilateral transverse sinuses, proximal right sigmoid sinus and left sigmoid sinus extending into the upper left internal jugular vein.
