Major collateral pathways in the abdomen

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.
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