Non Traumatic and Non Hypertensive Intracerebral Bleed: Causes and Imaging Evaluation

ABSTRACT

Background: Cross-sectional observational study was done in patients with non-traumatic, non-hypertensive intracerebral bleed undergoing cerebral angiography to study its different causes.Material & Methods:Patients with all age groups presenting to the emergency with acute non-traumatic intra-cerebral bleed undergoing cerebral angiography in our institution for a time period of 6 months with a total of 200 patients were included in the study. Data collected were analyzed with respect to causes, distribution of aneurysms. Suspected cases of hypertensive bleed were excluded from the study population.Results:Non-contrast computed tomographic images showed positive findings in the form of either intra-axial/extra-axial bleed or infarct in 95% of patients. However angiographic findings were positive in 52% of patients. Aneurysms were the most common positive angiographic findings (43% cases) with 95% of aneurysms were located in the circle of Willis. Majority of patients had solitary aneurysm while 6% had multiple aneurysms.Conclusions:Among all non-traumatic, non-hpertensive intracerebral bleed aneurysms accounts for majority of the causes. Other causes include intraparenchymal arterio-venous malformations, cerebral venous thrombosis with hemorrhagic infarct and dural arteriovenous malformations (AVM).