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 770 laboratory specimens.
A: Transverse cervical directly from subclavian artery; 360 of 770, 46.75%; 180 right, 180 left.
B: Absence of thyrocervical trunk; 131 of 770, 17%, 74 right, 57 left.
C: Transverse scapular and cervical from common trunk off thyrocervical; 112 of 770, 14.54% 54 right, 58 left.
D: Separate origins of branches from thyrocervical trunk; 83 of 770 specimens, 10.78%; 52 right, 57 left.
F: Transverse scapular arising separately from subclavian; 33 of 770, 4.3%, 12 right, 21 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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