Abstract
AbstractSplenic artery aneurysms are commonly associated with longstanding portal hypertension in the presence of a markedly enlarged spleen, and these aneurysms also occur in normal sized spleens following successful portacaval anastomosis. They are most successfully demonstrated by selective coeliac axis or splenic arteriography, but a large volume injection of concentrated contrast medium is essential for the demonstration of the intra‐splenic bifurcation aneurysms in the presence of marked splenomegaly.Most of these aneurysms are not detectable on the plain film as they are not calcified and none of the intra‐splenic aneurysms showed calcifications. The trunk aneurysms may be large and easily detectable, but the branch aneurysms may appear as a markedly tortuous artery. Their diameter is, however, greater than that of the associated branch. Intra‐splenic bifurcation aneurysms in association with portal hypertension occur more frequently than either trunk aneurysms or aneurysms at the hilum of the spleen.The common association of splenic artery aneurysms and portal hypertension is thought to be due to the increased volume and rate of blood flow through the splenic artery.
Published Version
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