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Cerebral venous sinus thrombosis (CVST) is a severe clinical condition that manifests with diverse symptoms that can be mild, taking the form of a headache, or can be life-threatening, with raised intracranial pressure and herniation. Despite systemic anticoagulation treatment, CVST still carries a mortality risk of approximately 10% because of the failure of venous recanalization by anticoagulants alone. This paper describes two cases with extensive CVST who presented with progressive neurological deterioration despite adequate systemic anticoagulation treatment. Both patients were successfully treated with endovascular clot removal using suction thrombectomy techniques with immediate recanalization of the sinuses and rapid radiographic improvement. The described therapy appears effective and safe; however, further studies are needed to validate the effectiveness of this treatment.