Illustrated Encyclopedia of Human Anatomic Variation: Opus II: Cardiovascular System
Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed
Based on a study of 769 laboratory specimens.
A: Branch of first portion of subclavian artery; 609 of 769 sides, 79.19%; 324 right, 285 left.
B: From common stem with thyrocervical trunk; 68 of 769 extremities, 8.84%; 11 right, 57 left.
C: From common trunk with suprascapular artery; 29 of 769 extremities, 3.77%; 9 right, 20 left.
D: Direct branch of second portion of subclavian artery; 28 of 769 extremities, 3.64%; 6 right, 22 left.
E: From common trunk with inferior thyroid artery; 9 of 769 sides, 1.17%; 5 right, 4 left.
F: From common trunk with transverse cervical artery; 6 of 769 sides, 0.78%; 2 right, 4 left.
G: Direct branch from the third portion of the subclavian artery; 6 of 769 sides, 0.78%; 4 right, 2 left.
H: From common trunk with superior intercostal artery; 6 of 769 sides, 0.78%; 4 right, 2 left.
I: Direct branch from axillary artery; 4 of 769 extremities, 0.52%; 2 right, 2 left.
J: Internal thoracic, transverse cervical, and suprascapular arteries, all from common trunk; 2 of 769 extremities, 0.28%; 1 right, 1 left.
Redrawn from Daseler, E.H. and B.J. Anson. Surgical anatomy of the subclavian artery and its branches. Surg. Gynecol. Obstet. 108:149-174, 1959.
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