Splanchnic Artery Aneurysms

Pasha, Shabana F.; Gloviczki, Peter; Stanson, Anthony W.; Kamath, Patrick S.
April 2007
Mayo Clinic Proceedings;Apr2007, Vol. 82 Issue 4, p472
Academic Journal
Autopsy studies suggest that splanchnic artery aneurysms may be more frequent than abdominal aortic aneurysms. These aneurysms are important to recognize because up to 25% may be complicated by rupture, and the mortality rate after rupture is between 25% and 70%. However, little is known about the natural history and clinical presentation of splanchnic artery aneurysms. Splenic artery aneurysms are the most common of the splanchnic artery aneurysms; multiple aneurysms are present in approximately one third of patients. Hepatic artery pseudoaneurysms are more common than true aneurysms because of increasing numbers of hepatobiliary interventional procedures. The diagnosis of splanchnic artery aneurysm should be considered in any patient with abdominal pain, a pulsatile mass, or an abdominal bruit with or without associated bleeding. However, most aneurysms are asymptomatic and are detected incidentally on imaging studies. Treatment, which can be either surgical or interventional radiology-based, should be considered in all patients with symptoms related to the aneurysms, if the aneurysm is more than 2 cm in diameter, if the patient is pregnant, or if there is demonstrated growth of the aneurysm.


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