Fogging phenomenon on a left-sided PCA stroke

Case contributed by Alexey Eyrikh


Left-sided PCA stroke.


Initial scan on the day of admission

Well demarcated left-sided subacute PCA stroke.


Control CT scan 6 days later

In a follow-up CT scan performed 6 days later, the infarcted area is now isodense and barely distinguishable from surrounding normal brain tissue.

Case Discussion

While acute cerebral infarcts are hypodense lesions, after a week or so, the fogging phenomenon often occurs. This refers to an evolution in density of the lesion from hypodense to isodense to surrounding brain parenchyma.

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Case information

rID: 40253
Published: 14th Oct 2015
Last edited: 13th Mar 2016
Inclusion in quiz mode: Excluded

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