Splenic artery aneurysm
 Discussion of Splenic artery aneurysm
- The splenic artery is the third most common site of intraabdominal aneurysms after abdominal aortic aneurysms and the iliac artery aneurysms
- Splenic artery aneurysm is four times more common in women but approximately three times more likely to rupture in men.
- Associated with hypertension, portal hypertension, cirrhosis, liver transplantation, and pregnancy.
- In contrast to aneurysms of larger vessels such as the aorta, atherosclerosis is not considered to be the underlying cause.
- Usually smaller than 3 cm
- Most commonly located in the distal portion of the artery.
- Peripheral calcification is common
- Rupture occurs in approximately 2-3%.
- Frequency of rupture is increased with liver transplantation, portal hypertension, and pregnancy.
- Treatment of symptomatic splenic artery aneurysms should be performed.
- In addition, several high-risk groups of asymptomatic patients should also be considered for repair
- Pregnant women or women of childbearing age
- Liver transplant or patients with cirrhosis and portal hypertension.
 Imaging Findings for Splenic artery aneurysm
- Splenic artery aneurysms can appear well defined and homogeneous on contrast-enhanced CT.
- Mural thrombus may be present
- Peripheral calcification is apparent in many cases
Patient #1: CT images demonstrate a small splenic artery aneurysm with peripheral calcification
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 References for Splenic artery aneurysm
- Agrawal, Gautam A., Johnson, Pamela T., Fishman, Elliot K. Splenic Artery Aneurysms and Pseudoaneurysms: Clinical Distinctions and CT Appearances. Am. J. Roentgenol. 2007 188: 992-999.