Introduction: The axillary artery extends to the subclavian artery, which gives blood the axillary region. This artery is starting from the outset of the first ribAnd ends near the inferior terse major muscle, and then goes on with the name of the Brachial artery,the axillary artery variation is common and given the blood supply to the upper limb Clinically important .These variations seem to be an important finding that a rare case of anatomical presentation in an underground cavity to the right of a male body with an age of approximately 60-65 years was found in ShahidSadoughi University of Medical Sciences in Yazd, which was as followed:, external thoracic artery that is normally separated from the second part of the axillary artery;In this case, the third branch of the Thoracodorsal artery is separated. Since the axillary artery was exposed to damage, especially in cases of abdominal tenderness or removal of the axillary lymph nodes, the use of upper limb arches for coronary artery bypass surgery, Therefore, knowledge of natural anatomy and axillary artery changes will be useful for medical professionals, especially surgeons and anatomists.
 

Keywords: Axillary artery, Variation, Thoracodorsal artery, External thoracic artery.

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