Splenunculus is simply another word for an accessory spleen—they are identical, and neither means an enlarged spleen.
An accessory spleen (also called a splenunculus, splenule, or supernumerary spleen) is a small, extra piece of normal spleen tissue located outside the main spleen. It is a common congenital variant, found in roughly 10–30% of people, and is typically harmless. The medical term for this is simply accessory spleen or splenunculus.
An enlarged spleen, on the other hand, has a completely different medical name: splenomegaly. Splenomegaly is not a disease itself but a sign of an underlying condition—such as infection, anemia, or cancer—that causes the main spleen to swell. So while “splenunculus” refers to an extra, normal-sized piece of spleen tissue, “enlarged spleen” (splenomegaly) refers to the abnormal swelling of the spleen itself.
Use the general group, as there are no specific group for Splenunculus
Spleen Disease: 0.04, 0.35, 2.5, 7.25, 60, 125, 300, 475.2, 527, 752.7