Department of Pathology,
University of
Oklahoma Health Sciences Center
NeuroTest Question #2
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Answer: B (Infarction in the middle cerebral artery
territory)
Level of difficulty: 1
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Discussion:
-
Lesion under discussion: The cystic cortical-subcortical
lesion here is best interpreted as a resolved, old infarct. It involves part of
the frontal lobe and the adjacent temporal lobe . These findings are typical for an
infarction that involves the middle cerebral artery territory. As the
resolved infarct is converted to a cavity covered by a thin layer of
leptomeniges, these indicate that this is a resolved infarct that has occurred
long term ago.
- Middle cerebellar artery: I put this answer here
to trick my students and residents. The cerebellum is not
being shown here and this answer is obviously irrelevant. Besides, there is
no "middle cerebellar artery". The three major arteries of the
cerebellum are the superior cerebellar artery (SUCA), anterior inferior
cerebellar artery (AICA), and posterior inferior cerebellar artery (PICA).
- Anterior and posterior cerebral arteries have
different territories. Please consult a neuropathology atlas for further
details.
Comment:
KarMing-Fung@ouhsc.edu