Analysis of the superficial middle cerebral vein in sphenoid ridge meningioma using contrast-enhanced dynamic computed tomography angiography

•Sphenoid ridge meningioma (SRM) effects the hemodynamics of intracranial veins.•The superficial middle cerebral vein (SMCV) changes its form and flow due to SRM.•The SMCV sometimes loses the connection to its origin such as the cavernous sinus.•The SMCV can maintain the anterograde flow partially o...

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