BACKGROUND Stroke is defined as a sudden loss of brain function caused by a decreased cerebral blood flow. The objective of this study was to find out the association between laterality of stroke and age group, gender, type of stroke and anatomical site. MATERIALS AND METHODS A retrospective descriptive study was designed to collect the reports of consecutive cranial computerised tomography (CT) scan taken over a period of seven months commencing from September 2016. The details of patients'

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... , gender, stroke type, anatomical site and laterality of acute arterial stroke were entered in Excel spread sheet and analysed statistically using Chi square test with Yates' correction. RESULTS Among 2,020 cranial CT scans, only 182 satisfied the eligibility criteria of stroke and thus the prevalence of acute arterial stroke was 9% among the study population. The ratio between non-haemorrhagic and haemorrhagic stroke was 5.7:1. Of the 155 nonhaemorrhagic strokes, 77 (49.6%) belonged to middle cerebral, 38 (24.5%) to posterior cerebral and two (1.2%) to anterior cerebral artery territory. The anatomical location of haemorrhage was significantly more in striatum (44.4%) among the study group and it was followed by lobar (22.2%), thalamus (18.5%), cerebellum (7.4%), pons (3.7%) and interventricular sites (3.7%). Bilateral lesions were noticed among 14.8% of non-haemorrhagic infarcts but none in haemorrhagic infarcts. CONCLUSION Overall right-sided lesions were noticed significantly more among males of all age groups among the non-haemorrhagic stroke cases, whereas there was no preferential laterality in haemorrhagic group.