What are the major collateral pathways in the abdomen?
Collateral pathways become important in arterial occlusion. The mesenteric vascular bed is rich in collaterals.
- • Pancreaticoduodenal arcade: between the superior and inferior pancreaticoduodenal arteries.
- • Arc of Buhler: between the proximal celiac artery and proximal SMA.
- • Arch of Barkow: between the right and left gastroepiploic arteries.
- • Arc of Riolan: between the proximal SMA and proximal IMA.
- • Marginal artery of Drummond: between the distal SMA and distal IMA.
