Splenic Artery Aneurysm With Arterioportal Fistula: An Unusual Cause of Portal Hypertension

Splenic artery aneurysms are uncommon vascular lesions. When associated with an arterioportal fistula, they may lead to portal hypertension due to abnormal shunting of arterial blood into the portal venous system. We describe the case of a 28-year-old woman who presented with dull pain in the left upper abdomen. Imaging revealed a splenic artery aneurysm with a communication to the splenic vein. She was managed successfully with endovascular embolisation, which completely excluded the aneurysm and closed the fistula. Early diagnosis and timely intervention are important to prevent rupture or progressive portal hypertension.