What is a splenuncule?

A splenuncule, also known as an accessory spleen, is a small mass of splenic tissue that is separate from the main spleen. It typically occurs in individuals as a congenital variation and can vary in size. While splenuncules usually do not cause health problems, they can sometimes be mistaken for other conditions during imaging studies. Their presence is generally benign, and they may be found in various locations near the main spleen.