Neurogenic thoracic outlet syndrome involves compression of which structure?

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Multiple Choice

Neurogenic thoracic outlet syndrome involves compression of which structure?

Neurogenic thoracic outlet syndrome occurs when the brachial plexus—the network of nerves that supplies the shoulder and upper limb—gets compressed as it passes through the thoracic outlet (the space between the clavicle and first rib near the scalene muscles). This nerve compression produces sensory changes and weakness in the arm, especially in areas served by the C8–T1 nerves, such as the hand and intrinsic hand muscles, leading to numbness, tingling, and weakness. Other structures are involved in different forms of thoracic outlet syndrome. Compression of the subclavian artery leads to arterial TOS, with issues like diminished pulses or arm ischemia. Compression of the axillary vein leads to venous TOS, presenting with arm swelling and congestion. The phrenic nerve isn’t the typical structure involved in thoracic outlet syndrome, so it isn’t the structure compressed in this condition. Thus, the brachial plexus is the structure affected in neurogenic thoracic outlet syndrome.

Neurogenic thoracic outlet syndrome occurs when the brachial plexus—the network of nerves that supplies the shoulder and upper limb—gets compressed as it passes through the thoracic outlet (the space between the clavicle and first rib near the scalene muscles). This nerve compression produces sensory changes and weakness in the arm, especially in areas served by the C8–T1 nerves, such as the hand and intrinsic hand muscles, leading to numbness, tingling, and weakness.

Other structures are involved in different forms of thoracic outlet syndrome. Compression of the subclavian artery leads to arterial TOS, with issues like diminished pulses or arm ischemia. Compression of the axillary vein leads to venous TOS, presenting with arm swelling and congestion. The phrenic nerve isn’t the typical structure involved in thoracic outlet syndrome, so it isn’t the structure compressed in this condition.

Thus, the brachial plexus is the structure affected in neurogenic thoracic outlet syndrome.

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