Abstract
Splanchnic aneurysms are uncommon, but nearly 22% present as surgical emergencies, and 8.5% eventuate in death. The splanchnic vessels affected, in decreasing order of frequency, are the splenic; hepatic; superior mesenteric; celiac; gastric and gastroepiploic; jejunal, ileal, and colic; pancreaticoduodenal; and gastroduodenal arteries. Most splanchnic artery aneurysms are asymptomatic, although rupture is not rare. Endovascular therapy has distinct advantages, yet certain aneurysms are best treated with an open operation. Specific splanchnic artery aneurysms are addressed individually because of the marked variability in their biological character and clinical importance. Splanchnic artery aneurysms are approximately threefold more common than renal artery aneurysms.
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