What is a ureterocele? Ureterocele (p ronounced: ‘yur-reet-ero-seel’) is a condition where a part of the ureter, the tube that connects the kidney to the bladder, forms a bulge or balloon-like structure inside the bladder. There are 2 types of ureterocele: Orthotopic ureterocele, where the bulge is located completely inside the bladder.

Also known as "simple" or "orthotopic" ureterocele 4,6. Considerably less common than the ectopic variety and is almost always confined to the adult population. There is a congenital prolapse of a dilated distal ureter into the bladder lumen.