The only semi-valid anatomical comparison can be made with arteries.

Pic related + these two videos:

Scapular Anastomoses: https://www.youtube.com/watch?v=xrc7BpLI3m4

Spinal Cord Blood Supply: https://www.youtube.com/watch?v=lEoinU_M-_Q

The two centermost lines equate to the Internal Thoracic Artery.

The three sidemost lines, right and left, might project the scapular anastomoses.

The line at the most bottom, on the right… is part of the Lynphatic System, the Thoracic Duct. (browser 3D anatomical viewer: https://www.zygotebody.com/#nav=-1.67,132.58,52.33,0,0,0,0&sel=p:;h:;s:1744;c:-0.6;o:-0.75&layers=1,1,3862)