What is the most common visceral arterial aneurysm?

The splenic artery aneurysm is recognized as the most common visceral arterial aneurysm. This condition often presents without symptoms, thereby frequently going undiagnosed until complications arise or incidentally discovered during imaging studies for other reasons.

The prevalence of splenic artery aneurysms can be attributed to various factors, including the unique anatomical and hemodynamic characteristics of the splenic artery. This artery is subjected to higher levels of torsion and changes in intraluminal pressure compared to other visceral arteries. Additionally, the possibility of these aneurysms being associated with conditions such as liver cirrhosis and portal hypertension also contributes to their frequency.

In the context of visceral arterial aneurysms, while renal artery aneurysms can also occur and are clinically significant, they do not match the prevalence observed with splenic artery aneurysms. Similarly, hepatic and superior mesenteric artery aneurysms are less common compared to splenic artery aneurysms and are often associated with specific pathological conditions that diminish their overall incidence.