What is Occlusion, Mesenteric Vascular?

Obstruction of the flow in the mesenteric circulation by atherosclerosis, emboli or thrombi, stenosis, trauma, and compression or intrinsic pressure from adjacent tumors. Rare causes are drugs, intestinal parasites, and vascular immunoinflammatory diseases such as periarteritis nodosa and thromboangiitis obliterans. (From Juergens et al., Peripheral Vascular Diseases, 5th ed, pp295-6)