04-06-2009, 04:35 PM
A 67-year-old man is brought to the emergency
department 2 hours
after the onset of weakness and double vision. He has
hypertension and
hyperlipidemia treated with metoprolol, captopril, and
atorvastatin.
His blood pressure is 190/106 mm Hg. Neurologic
examination shows
left-sided facial weakness including the forehead.
There is palsy of left
conjugate gaze, and the left eye fails to adduct on
right gaze.
Vertical eye movements are intact. Muscle strength is
3/5 in the right upper
and lower extremities. Deep tendon reflexes are
brisk, and Babinski's
sign is present on the right. Which of the following
is the most
likely location of this patient's lesion?
A
) Bilateral thalamic
B
) Left frontal
C
) Left pontine
D
) Right caudate
E
) Right midbrain
department 2 hours
after the onset of weakness and double vision. He has
hypertension and
hyperlipidemia treated with metoprolol, captopril, and
atorvastatin.
His blood pressure is 190/106 mm Hg. Neurologic
examination shows
left-sided facial weakness including the forehead.
There is palsy of left
conjugate gaze, and the left eye fails to adduct on
right gaze.
Vertical eye movements are intact. Muscle strength is
3/5 in the right upper
and lower extremities. Deep tendon reflexes are
brisk, and Babinski's
sign is present on the right. Which of the following
is the most
likely location of this patient's lesion?
A
) Bilateral thalamic
B
) Left frontal
C
) Left pontine
D
) Right caudate
E
) Right midbrain