Splenorenal shunt venous aneurysms are rare venous aneurysms that usually develop in a setting of portal venous hypertension on a background of cirrhosis in those with an associated inherent venous wall weakness 1.
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Epidemiology
These venous aneurysms are rare, and there are no reported incidence rates in the literature.
Pathology
The portal venous hypertension, increases the flow within splenorenal shunts, leading to venous dilatation and aneurysms 2.
Radiographic features
CT
These lesions are seen as saccular or fusiform focal abnormal venous dilatation, with a feeding vein arising from the splenic vein, and draining collateral in the left renal vein.
Treatment and prognosis
They can be treated with surgical ligation or balloon-occluded retrograde transvenous obliteration 1.
Complications
These lesions tend to grow over time, as the portal vein pressure rises, and may eventually rupture.
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