RT Journal Article SR Electronic T1 Acute subarachnoid hemorrhage JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 61 OP 64 VO 20 IS 1 A1 Hassan, Ali A1 Ahmad, Bakhtiar A1 Ahmed, Zahoor A1 Al-Quliti, Khalid W. YR 2015 UL http://nsj.org.sa/content/20/1/61.abstract AB Ruptured cerebral aneurysm is the most common cause of spontaneous subarachnoid hemorrhage (SAH). Rarely cerebral venous sinus thrombosis (CVST) may present initially as acute SAH, and clinically mimics aneurysmal bleed. We report 2 cases of CVST who presented with severe headache associated with neck pain and focal seizures. Non-contrast brain CT showed SAH, involving the sulci of the convexity of hemisphere (cSAH) without involving the basal cisterns. Both patients received treatment with anticoagulants and improved. Awareness of this unusual presentation of CVST is important for early diagnosis and treatment. The purpose of this paper is to emphasize the inclusion of vascular neuroimaging like MRI with venography or CT venography in the diagnostic workup of SAH, especially in a patient with strong clinical suspicion of CVST or in a patient where neuroimaging showed cSAH.