False subarachnoid hemorrhage in anoxic encephalopathy with brain swelling

T. G. Phan, E. F.M. Wijdicks, G. A. Worrell, J. R. Fulgham

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


The authors present two comatose patients with brain swelling from anoxic encephalopathy. Nonenhanced computed tomography (CT) images showed increased density on the falx, on the tentorium, and in the basal cisterns, all of which falsely suggested subarachnoid hemorrhage. Autopsy in both patients failed to show subarachnoid hemorrhage. In rare circumstances, anoxic encephalopathy can mimic subarachnoid hemorrhage on nonenhanced CT.

Original languageEnglish (US)
Pages (from-to)236-238
Number of pages3
JournalJournal of Neuroimaging
Issue number4
StatePublished - 2000


  • Anoxic encephalopathy
  • Brain swelling
  • Computed tomography
  • Pseudosubarachnoid hemorrhage

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology


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