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 765 laboratory specimens.
A: Direct branch from third portion of subclavian artery; 333 of
765 extremities, 42.96%; 177 right, 156 left.
B: Direct branch from second portion of subclavian artery; 140 of 765 extremities, 18.19%; 70 right, 70 left.
C: Independent branch from thyrocervical trunk; 122 of 765 sides, 15.87%; 63 right, 59 left.
D: From fused common trunk with transverse scapular artery. Common branch in turn derived from thyrocervical trunk; 121 of 765 sides, 15.74%; 58 right, 63 left.
E: From fused common trunk with transverse scapular. Trunk in turn arising from subclavian artery; 34 of 765 sides. 4.44%; 20 right, 14 left. Twelve first portion, 2 second portion, 20 third portion of subclavian artery.
F: As direct branch from first portion of subc1avian artery: 24 Of 765 sides, 3.09%; 12 right, 12 left.
G: From a common vessel with costocervical trunk (or deep cervical artery); 16 of 765 extremities, 2.09%; 6 from first portion, 8 from second portion, and 2 from third portion of subciavian artery.
H: As a direct branch from the axillary artery; 9 of 765 sides, 1.17%; 4 right, 5 left.
I: Branch of internal thoracic artery; 6 of 765 sides, 0.78% 2 right, 4 left.
J: Branch of a thyroidea ima artery derived in turn from aortic arch; 1 of 765 specimens, 0.13%; left side.
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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