Endovascular Venous Sinus Reconstruction of Stenotic Sagittal Sinus Due to Tumour Invasion with Review of Literature

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BSTRACT

Intracranial hypertension (IH) secondary to venous sinus obstruction by tumour invasion is an uncommon but clinically significant condition. We report a rare case presenting with clinical features of raised IH caused by a small parasagittal tumour predominantly within the superior sagittal venous sinus, causing significant venous sinus occlusion. Neuroimaging and venous manometry confirmed significant venous outflow obstruction with a significant trans-stenotic pressure gradient. The patient was treated with endovascular venous sinus stenting, resulting in rapid symptomatic relief followed by radiosurgery for the tumour. This case highlights the role of venous sinus stenting as an effective, minimally invasive therapeutic option for tumour-related IH when definitive tumour resection is deferred or carries high risk.