Ampullary renal pelvis

The morphology of the renal pelvis does not have uniform standards in anatomy and imaging. The shape of the renal pelvis can be divided into horn type, branching type, ampullary type and transitional type.

Anatomically, the renal pelvis is situated in the renal sinus and comprises two or three major renal calyces formed from two or three renal calyces. Renal angiography intuitively displays the morphology and type of renal pelvis. X-ray angiographic observation demonstrates that ampullary type of renal pelvis (ARP) is large and round and may be connected with renal calyces instead of major renal calyces.