deltopectoral triangle

clavipectoral triangle

[TA]
area of anterior thoracic region bounded superiorly by the clavicle, inferomedially by the pectoral major (muscle) and superolaterally by the deltoid (muscle); the cephalic vein typically passes from superficial to deep here, and the pectoral branch of the thoracoacromial (arterial) trunk emerges here.

deltopectoral triangle

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The physician should locate the angle of the clavicle and the deltopectoral triangle (bounded by the clavicle, the pectoralis major muscle medially and the deltoid muscle laterally).