UW qID 2076

[alicealicealice]

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62 yo femal with pure sensory stroke right upper and lower extremities and face, no other deficits, strength intact:
Location?
A) Frontal cortex
B) Internal capsul
C) Base of Pons
D) Caudate
E) Thalamus

I put internal capsule, thinking that thalamus strokes are associated more with allodynia etc.

U world says thalamus and the one liner "a lesion of the internal capsule would cause a motor deficit."
Maybe thalamic is more common, but the above statement threw me off: What about the posterior limb of the IC?? or am i missing something?

 

[ABQ9988]

The term "pure sensory" is what you need to think about.

 

[notbobtrustme]

yea, pure sensory strokes will be in the thalamus, since all sensory information synapses on VPL or VPM (and pretty sure you can't selectively knock out one nuclei in the real world), pure motor strokes will be internal capsule, I believe.

 

[thehundredthone]

Maybe thalamic is more common, but the above statement threw me off: What about the posterior limb of the IC?? or am i missing something?

The posterior limb has some corticospinal fibers, it isn't purely sensory.

 

[alicealicealice]

OK makes sense. Thanks