Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
From the case:
Posterior inferior cerebellar artery (PICA) infarct
Axial non-contrast

Hypodensity in the left cerebellar hemisphere, in the territory of the left PICA.
Axial non-contrast

Left PICA territory infract is more clearly delineated with positive mass effect from edema.
Case Discussion
This is an example of a PICA infarct evolving over 48 hours. Patient required craniotomy and resection of infarcted cerebellum.