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- W1808476552 abstract "PURPOSE To determine if position of superficial cerebral cortical veins can be used to distinguish subdural hygroma from atrophy on MR brain scans. METHODS Retrospective review of MR scans obtained in cases of extracerebral fluid collections, separating these into two groups, ie, subdural hygroma or atrophy. FINDINGS All cases of atrophy in this study showed cortical veins and their branches traversing widened cerebrospinal fluid spaces over cerebral convexities. None of subdural hygroma patients showed this finding. Cortical veins in hygroma patients were seen only at margin of displaced cortex, and did not traverse fluid collections over cerebral convexities. CONCLUSIONS The authors call visualization of cortical veins and their branches within fluid collections at cerebral convexities the cortical vein sign. They believe this sign to be prima facie evidence of atrophy; its presence rules out diagnosis of subdural hygroma in region of interest." @default.
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- W1808476552 date "1992-09-01" @default.
- W1808476552 modified "2023-09-27" @default.
- W1808476552 title "Subdural hygroma versus atrophy on MR brain scans: the cortical vein sign." @default.
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