Neuromuscular Disorders USMLE Step 1 Practice Question
A 44-year-old woman presents with nighttime numbness and tingling in the thumb, index finger, middle finger, and lateral half of the ring finger that awakens her from sleep. Vital signs are normal (BP 128/82, HR 76, RR 14, Temp 37°C, SpO2 98%). Physical examination demonstrates weakness of thumb opposition and positive Phalen's test. Nerve conduction studies show prolonged distal latency of the median nerve. She denies recent trauma. Which of the following is the most likely diagnosis?
Answer choices
- AUlnar neuropathy at the elbow
- BC8 radiculopathy
- CThoracic outlet syndrome
- DRadial neuropathy at the spiral groove
- EMedian neuropathy at the wristCorrect answer
- FPronator teres syndrome
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