Splenic artery aneurysm

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[edit] 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.

[edit] 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

[edit] Images

Patient #1: CT images demonstrate a small splenic artery aneurysm with peripheral calcification

[edit] See Also

[edit] External Links

Goldminer: Splenic artery aneurysm

[edit] References for Splenic artery aneurysm