Zebra sign (cerebellum)

Last revised by Rohit Sharma on 24 Feb 2024

The zebra sign has been termed to describe the finding of layering of blood in amongst the folia of the cerebellum as seen on CT brain, particularly in the setting of supratentorial surgeries (temporal lobe resection), neuro-vascular neck surgeries, lumbar spinal surgeries possibly secondary to dural tear and interpreted as remote cerebellar hemorrhage 1-3.

This type of hemorrhage is characterized by a streaky pattern, like a zebra's stripes, due to blood spreading in the cerebellar sulci. 

The term zebra has also been used elsewhere in radiology, in the zebra stripe sign (bones).

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Cases and figures

  • Figure 1
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  • Case 1: in remote cerebellar hemorrhage
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  • Case 2: day 1 post supratentorial SDH evacuation
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