Cortical Ribbon and Crossed Cerebellar Diaschisis in Subclinical Status Epilepticus: A Case Report

Cortical ribbon is an uncommon finding that is characteristic of Creutzfeldt-Jakob disease but has a broad differential diagnosis. On the other hand, crossed cerebellar diaschisis is also an uncommon finding in brain magnetic resonance imaging (MRI). Herein, we are describing an 88-year-old male patient with dementia, ambulatory dysfunction, and frequent falls who presented with acute on chronic right-sided subdural hemorrhage that was discovered after an episode of seizure. Although the subdural hemorrhage was associated with mild midline shift and lateral ventricle compression, no surgical drainage was attempted, and only middle meningeal artery embolization was pursued. Lack of further evidence of seizure and clinical stability prompted discharge. However, he was soon re-admitted for left-sided focal seizure that failed multiple antiepileptic medications and evolved into status epilepticus. MRI brain showed evidence of both cortical ribbon as well as crossed cerebellar diaschisis. No evidence of infection or autoimmune inflammation was found with continuous mental status deterioration. Code status was changed by his family, and comfort care was pursued. This case is not only interesting because of the rarity of both cortical ribbon and crossed cerebellar diaschisis, but this case helps to remind clinicians of the relationship between these findings and seizure/status epilepticus.