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Thoracic outlet syndrome

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Thoracic outlet syndrome

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High Yield Notes
10 pages
Flashcards

Thoracic outlet syndrome

9 flashcards
Questions

USMLE® Step 1 style questions USMLE

1 questions
Preview

A 23-year-old man comes to his primary care physician to evaluate the sudden onset of numbness and tingling in the right upper extremity following a workout. The patient was performing sit-ups when he experienced a sharp pain in his neck, followed by numbness and tingling in his right hand. He does not have any symptoms while at rest. He reports several similar episodes in the past. He is a bodybuilder. Vital signs are within normal limits. The right lateral neck appears larger when compared to the left lateral neck. The patient has no spinal tenderness to palpation. Which of the following is the most likely underlying cause of this patient’s symptoms?  

External References
Summary
Thoracic outlet syndrome involves compression at the thoracic inlet, which is known clinically as the superior thoracic outlet, resulting from excess pressure placed on the neurovascular bundle passing between the anterior scalene and middle scalene muscles. It can affect one or more of the nerves that innervate the upper limb and/or blood vessels as they pass between the chest and upper extremity, specifically in the brachial plexus, the subclavian artery, and rarely, the subclavian vein.