Vein of Trolard thrombosis with venous infarction (CT perfusion)
Diagnosis certain
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No intra or extra-axial haemorrhage. No space-occupying lesion, mass effect or midline shift evident. The ventricles and CSF spaces appear normal.
Subtle hypodensity and loss of grey-white matter differentiation in the left pre and postcentral gyri. There is a prominent hyperdense cortical vein (dense vein sign) in the region representing the superior anastomotic vein (of Trolard). No dense artery sign.
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