• Neurocritical care · Jan 2007

    Case Reports

    Pseudo-subarachnoid hemorrhage in cerebellar infarction.

    • Brandon R Barton, Shyam Prabhakaran, Demetrius K Lopes, and Vivien H Lee.
    • Department of Neurologic Sciences, Rush University Medical Center, 1725 W. Harrison Street, Suite #1106, Chicago, IL 60612, USA. Brandon_r_barton@rush.edu
    • Neurocrit Care. 2007 Jan 1; 7 (2): 172-4.

    IntroductionThe computed tomography (CT) appearance of subarachnoid hemorrhage (SAH) without subarachnoid blood has been labeled "pseudo-subarachnoid hemorrhage" (pseudo-SAH) and has been reported with several diffuse intracerebral insults including intrathecal contrast agents, meningitis, generalized cerebral edema, anoxic encephalopathy, and intracranial hypotension.MethodsSingle case report.ResultsWe present a 43-year-old female who presented with vertigo and severe headache. Initial CT brain suggested SAH with hydrocephalus. Subsequent cerebral angiography was negative. Cerebrospinal fluid from an external ventricular drain (EVD) was negative for blood, and MRI brain revealed an acute stroke in the posterior inferior cerebellar artery (PICA) territory.ConclusionOur case suggests that PICA infarction can be associated with the CT finding of pseudo-SAH, thereby mimicking the clinical and radiographic presentation of SAH.

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