A Case of Multiple Posterior Intercostal Artery Common Trunks in Conjunction with Additional Arterial Variations

Figure 2

Graphic representation of variations of arterial branching pattern of the posterior thoracic wall, as seen in an 81-year-old cadaver: (a) right highest intercostal artery, supplying only 1st ICS; (b) right descending branch of vertebral artery, supplying 1st-3rd ICS; (c) left highest intercostal artery, following typical anatomical arterial supply; (d) right superior common trunk, giving off 4th-7th PIAs; (e) right 8th PIA, directly from the TA; (f) right 9th PIA, with diminished size directly from TA; (g) right inferior common trunk, giving of 9th-11th PIAs; (h) left superior common trunk, giving off 3rd-5th PIAs; (i) left middle common trunk, giving off 6th-7th PIAs; (j) left 8th, 9th, and 10th PIAs, directly from the TA; (k) left inferior common trunk, giving off 11th PIA and subcostal artery.