1. Abstract
1.1. Background
Spontaneous or non-traumatic subarachnoid hemorrhage is pre dominantly attributed to the rupture of an aneurysm, accounting for 85% of cases, while non-aneurysmal peri mesencephalic he morrhage constitutes approximately 10%. Although rare, cerebral venous thrombosis can also lead to subarachnoid hemorrhage, presenting clinical and radiological signs that may closely resemble those of an intracranial aneurysm rupture, thereby complicating the diagnostic process.