A medical illustration depicting the anterior and superior views of the shoulder comparing a normal shoulder anatomy and a shoulder with a left brachial plexus compression. A brachial plexus compression is characterized by edema/swelling of the tissues, compression of the subclavian artery, and a displaced left clavicle. Anatomy highlighted in these views includes the brachial plexus (superior, middle, and inferior trunks), suprascapular nerve, scalene muscles, and the subclavian artery.