TY - JOUR T1 - Don’t forget the fornix JF - Practical Neurology JO - Pract Neurol DO - 10.1136/practneurol-2020-002802 SP - practneurol-2020-002802 AU - Maurice Sidra AU - Louise Hattingh AU - Hawraman Ramadan Y1 - 2021/03/29 UR - http://pn.bmj.com/content/early/2021/03/29/practneurol-2020-002802.abstract N2 - A 52-year-old man presented with acute onset of primarily anterograde amnesia. He had a history of diabetes mellitus, coronary artery disease and smoking. We found no other focal neurological deficits. The amnesia improved slowly over the subsequent weeks.MR scan of the brain showed moderate chronic microangiopathic white matter changes and acute infarction in both fornices (figure 1). This most likely explained the abrupt onset of anterograde amnesia and prolonged recovery.Figure 1 Axial diffusion weighted MRI (A) and apparent diffusion coefficient image (B) showing the acute diffusion restriction in both fornices (arrows), consistent with bilateral acute fornix infarction.Anatomy and functionThe fornices are white matter tract bundles that lie on the medial aspects of the cerebral hemispheres. They each contain output fibres arising … ER -