On what structure could the pectoralis minor create a neurovascular compression?

On what structure could the pectoralis minor create a neurovascular compression?

• A. Axillary artery
• B. Axillary vein
• C. Brachial plexus
• D. All of the above

Answer: (D)

The pectoralis minor sits over the axillary neurovascular bundle as it transitions from the thorax into the upper limb. When this muscle is tight or hypertrophied, it narrows the space beneath it, where the axillary artery, axillary vein, and the brachial plexus lie. Compression here can affect blood flow, venous return, and nerve conduction to the arm. Because all three structures can be compressed in this region, the pectoralis minor can produce neurovascular compression on any of them. That’s why all of these structures can be involved.

The pectoralis minor sits over the axillary neurovascular bundle as it transitions from the thorax into the upper limb. When this muscle is tight or hypertrophied, it narrows the space beneath it, where the axillary artery, axillary vein, and the brachial plexus lie. Compression here can affect blood flow, venous return, and nerve conduction to the arm. Because all three structures can be compressed in this region, the pectoralis minor can produce neurovascular compression on any of them. That’s why all of these structures can be involved.