Pseudo-SAH in a patient with methanol poisoning

Abstract

Objective: Methanol poisoning is a dangerous life-threatening event, manifested withvarious symptoms, sometimes very rare ones, that all should be addressed to preventmisdiagnosis of the methanol-poisoned patients.Case Presentation: A 21-year-old young man was brought to the emergency department(ED) with a generalized tonic-clonic (GTC) seizure and he was diagnosed with methanolintoxication. A non-contrast computed tomography (NCCT) of the brain demonstratedfindings similar to subarachnoid hemorrhage (SAH). After the brain CT, he had a GlasgowComa Score (GCS) of 3 and all brainstem reflexes were absent. Neurology consultantagreed with the diagnosis of pseudo-SAH. Brain death was confirmed by a positive apneatest within 24 hours of presentation.Conclusion: It is suggested that compression of dural sinuses due to severe brain edema,reduces the venous drainage and leads to venous engorgement, which appears highattenuated in the background of low-density edematous brain matter.