Krishnamoorthy, T.Gupta, A. K.Bhattacharya, R. N.Rajesh, B. J.Purkayastha, S.2012-12-042012-12-042006AMERICAN JOURNAL OF NEURORADIOLOGY. 27; 10; 2075-2077https://dspace.sctimst.ac.in/handle/123456789/128Although anatomic variations are well known in the A1 segment of the anterior cerebral artery (ACA), anomalous origin of a cortical artery from the A1 segment is extremely rare. The only reported cortical branch to arise from the A1 segment is the fronto-orbital artery. We report a case of anomalous origin of the callosomarginal artery (CMA) in association with a saccular aneurysm from the A1 segment of the left ACA in a 35-year-old man who presented with intracerebral hemorrhage. To our knowledge, this is the first report of anomalous origin of the CMA from the A1 segment.Cardiology