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
1. Inferior thyroid artery; 2, ascending cervical artery: 3, transverse cervical artery; 4, suprascapular artery; 5, internal thoracic artery; 6, costocervical trunk; 7, vertebral artery.
C, F: The transverse cervical arose from the inferior thyroid which arose from a common stem with the ascending cervical and suprascapular arteries. Right side, 3 cases (3.3%); left side, 5 cases (5.9%); total, 8 cases (4.5%); in men, 6 cases (4.5%); in women, 2 cases (3.1%).
The transverse cervical artery arose from the thyrocervical trunk from which the ascending cervical and internal thoracic arteries arose from a common stem. Left side, 1 case (1.1%); total, 1 case (0.5%); in men, left side, 1 case (1.9%); total, 1 case (0.9%).
D: The transverse cervical artery was absent. Right side, 4 cases (4.4%); left side, 5 cases (5.9%); total, 9 cases (5.1%); in men, 7 cases (6.3%); in women, 2 cases (3.1%).
Suprascapular Artery
B, D, G.: The suprascapular artery arose form the thyrocervical trunk. Right side, 41 cases (45.5%); left side, 34 cases (40.5%); total, 75 cases (43.1%); in men, 45 cases (40.9%); in women, 30 cases (46.8%).
The suprascapular artery arose from the thyrocervical trunk with the transverse cervical artery. The suprascapular arose with the transverse cervical and internal thoracic arteries from a common stem. The inferior thyroid artery was absent or it arose directly from the subclavian artery.
H: The suprascapular arose with the internal thoracic from a common stem. The inferior thyroid was absent or arose directly from the subclavian artery. Left side, 1 case (1.5%); total, 1 case (0.5%) in a man.
The suprascapular arose together with the ascending cervical artery. Left side, 1 case (1.1%); total, 1 case (0.5%) in a man.
I: The suprascapular artery was absent. Right side, 3 cases (3.3%); left side, 4 cases (4.7%); total, 7 cases (4%): in men, 4 cases (3.6%); in women, 3 cases (4.3%).
Redrawn from Rohlich, K. über den Truncus thyreocervical des Menschen. Anat. Anz. 90:129-148, 1940-41.
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