CTICasesSplenic Artery Aneurysm
Imaging findings
CT angiography in a patient with Loeys-Dietz syndrome demonstrates a large, tortuous splenic artery aneurysm that has ruptured, causing hemoperitoneum and fatal hypovolemic shock. Associated findings include a pectus carinatum deformity.
Key takeaways
Splenic artery aneurysms are a recognized manifestation of the generalized vascular dysplasia in Loeys-Dietz syndrome. Because Loeys-Dietz predisposes to aggressive aneurysm formation and rupture in medium-sized systemic arteries, splenic or visceral artery aneurysms carry a high risk of rupture and mortality, requiring prompt endovascular or surgical repair once detected.
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