A 70-Year-Old Right-Handed Man Is Brought to the Emergency Department

A 70-year-old right-handed man is brought to the emergency department due to right-sided weakness and urinary incontinence that began suddenly 10 hours ago.  He has had type 2 diabetes mellitus for the past 20 years and hypertension for the past 28 years.  On examination, muscle strength is 4/5 in the right upper extremity and 1/5 in the right lower extremity, and Babinski sign is present on the right side.  Sensation is decreased throughout the right foot and leg.  Visual fields are full with no deficits, and speech is normal.  Which of the following arteries is most likely to be occluded?

A) Left anterior cerebral artery
B) Left middle cerebral artery
C) Left lenticulostriate arteries
D) Right anterior cerebral artery
E) Right middle cerebral artery
F) Right lenticulostriate arteries

Correct Answer:

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