DOI: 10.36347/sjmcr.2018.v06i09.024

Pages: 697-699

The Artery of Percheron is an uncommon anatomic variation in which a single arterial trunk arises from the posterior cerebral artery (PCA) to supply both sides of the thalamus and midbrain. The incidence of AOP infarcts occurs in approximately 0.1 to 0.3 % of total ischemic stroke. A bilateral paramedian thalamic infarct is characterized by a triad of altered mental status, vertical gaze palsy, and memory impairment. These disorders usually occur with acute onset and may persist until death. Our cases come under the 2nd type of ischemic pattern by N.A.Lazzaro et al. The classical MRI imaging feature in AOP infarction is diffusion restriction in both paramedian regions on diffusion-weighted MRI. AOP occlusion can be life-threatening, so the knowledge about AOP and its occlusion is essential to make an accurate diagnosis and timely management.