A 62-year-old woman with a history of diabetes and hypertension presents to the emergency room with the right eye deviated outward and an obvious ptosis. The pupils are normal size. She has a slight headache. Which of the following is the most likely diagnosis?
سؤال مجاني 3 من 10 اليوم · اشترك وكمّل بدون حد
اعرض الإجابة
الإجابة والشرح
ادخل لحسابك عشان نحفظ إجاباتك ونوريك أخطاءك.
الإجابة: D. vasculopathic (noncompressive) third nerve palsy
Eye deviated outward with ptosis is a third-nerve palsy. The pupil fibres run superficially, so a compressive lesion (e.g. aneurysm) affects the pupil first (dilated pupil). A pupil-sparing third-nerve palsy in a patient with diabetes and hypertension is therefore vasculopathic (microvascular, non-compressive); cranial nerve lesions are a recognised diabetic mononeuropathy.
- An aneurysm (C) would usually give a dilated pupil; superior oblique palsy does not cause ptosis.
- المصدر
- Basics of Neurology-Ali Rawas.pdf · p. 21
Peripheral nerve disease.pdf · p. 2 - المحاضرة
- Weakness: TIA & Stroke · Neurology · Module C
- ظهر في
- Neuro bank