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FIG 2. 17-day-old boy who was clinically dehydrated with increased head circumference after resection of a medulloblastoma 2 days before these images were obtained.
A, Noncontrast vertex CT section shows high attenuation within the sagittal sinus and multiple cortical veins (arrows).
B, Integral rendered vertex view of a CTCVI scan clearly shows the lack of enhancement in the sagittal sinus and in several cortical veins (arrows). CTCVI confirms that the increased density on the noncontrast CT scan was related to thrombosis rather than to hemoconcentration.
C, Filling defect (curved arrow) in the transverse sinus is clearly seen in this posterolateral integral rendered image. Note the enlarged Labbé vein, which reconstitutes the sigmoid and jugular veins (open arrow).
D, Sagittal cut-plane reformatted image clearly shows the thrombosis of the superior sagittal sinus (black arrow), vein of Galen (white arrow), and torcular Herophili (asterisk).
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