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
This study was based on 775 laboratory specimens.
A: Independent branch of thyrocervical trunk; 460 of 775 specimens, 59.35%; 236 right, 224 left.
B: Common trunk with transverse cervical artery derived in turn from the thyrocervical trunk; 128 of 775 specimes, 16.51%; 60 right, 68 left.
C: Direct branch of the subclavian artery; 102 of 775 sides, 13.16%; 53 right, 49 left. First portion subclavian artery, 51 sides; second portion, 8; third portion, 43.
D: Common trunk with transverse cervical artery derived from subclavian artery; 34 of 775 extremities, 4.38%; 20 right, 14 left. Branch of first portion subclavian, 12 specimens; second portion, 2, third portion, 20.
E: Common trunk with internal thoracic artery; 29 of 775 extremities, 3.74%; 9 right, 20 left.
F: Direct branch of the axillary artery; 20 of 775 sides, 2.58%; 8 right, 12 left.
G: From common trunk with costocervical trunk; 2 of 775 specimens, 0.26%; both left.
Redrawn from Daseler, E.H. and B.J. Anson. Surgical anatomy of the subclavian artery and its branches. Surg. Gynecol. Obstet. 108:149174, 1959.
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