Anomalous left anterior cerebral artery with hypoplastic right anterior cerebral artery

We report an extremely rare anomalous variation of left anterior cerebral artery arising from the contralateral Paraclinoid Internal carotid artery with Hypoplastic right Anterior cerebral artery in a 56 years old female which was incidentally detected on computed tomographic angiography of cerebral vessels. Angiographic identification and characterisation of this anomaly is very important in developing a differential diagnosis and when planning a surgery and endovascular procedure.Keywords: Anterior cerebral artery, Paraclinoid Internal carotid artery, Anterior communicating artery Computed tomography angiograph