ABSTRACT
Background: Dilatations of localised segments of the artery are called ‘aneurysms. Approximately 80% of aneurysms form in anterior circulation of circle of Willis. While 20% form in the posterior circulation of the brain. All aneurysms can cause symptoms because of compression of surrounding structures, thrombosis, rupture of emboli. Material and Methods: During routine dissection for I MBBS students in Department of Anatomy, JSS Medical College during intracranial dissection we encountered unruptured saccular aneurysm of intracranial internal carotid artery on right side Case report: Aneurysm of intracranial internal carotid artery was seen on right side of middle cranial fossa in a male cadaver. The aneurysm was close to right optic nerve and measured about 2.2 cm in width and 1.8 cm antero-posteriorly. No other intracranial pathology or anatomical variations were noted. Conclusion: The anatomical knowledge of aneurysm is important to Neurosurgeons, Endovascular surgeons, ENT surgeons and interventional Radiologists.