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At the time the article was created Craig Hacking had no recorded disclosures.View Craig Hacking's current disclosures
At the time the article was last revised Daniel J Bell had no recorded disclosures.View Daniel J Bell's current disclosures
The pectoral region is the anterior region of the upper chest where there are four thoracoappendicular muscles (also known as the pectoral muscles):
The breast is located superficial to the muscles. The lateral border of the pectoralis major muscle forms the anterior margin of the axilla. At the superolateral aspect the pectoral region is separated from the deltoid muscle by the deltopectoral groove and contains the cephalic vein.