Concurrent Variations of Lateral Pectoral, Median, and Musculocutaneous Nerves

Abstract

Brachial plexus frequently presents variations of its cords and branches. We saw concurrent variations of lateral pectoral, median and musculocutaneous nerves. There were two lateral pectoral nerves. Median nerve was formed by the union of 3 roots; two lateral roots and one medial root. Medial root arose from the ulnar nerve. Musculocutaneous nerve did not pierce the coracobrachialis muscle. There was a thick communicating branch between the musculocutaneous and median nerves. Though there are reports on individual variations mentioned above, it is very rare to see all of them in the same individual. Knowledge of these variations may be handy in axillary lymph node clearance and performing nerve blocks

Keywords

• Lateral pectoral nerve
• median nerve
• musculocutaneous nerve
• brachial plexus