A ureterocele is a congenital birth defect found in the urinary bladder in which swelling occurs in one of the ureters (the tubes that carry urine from the kidney to the bladder). When swelling in one of the ureters occurs, urine will ultimately become blocked and thus cannot move freely within the bladder. This condition causes the ureter to expand causing symptoms such as bloating, stomach pain, difficulty urinating, foul smelling urine and a host of other complications. Many times, a ureterocele can be detected and diagnosed before birth (with a pregnancy sonogram), for some, it is diagnosed later in life. Although severe kidney disorders can result from this defect, most times, it is a treatable condition using antibiotics and/or surgery.