A ureterocele is a small bulge or a swelling at the end of the ureter that forms while a baby is developing in the womb. The ureter is the tube that carries urine (pee) from the kidney to the bladder. Some people with a ureterocele don't have any symptoms. But if the ureterocele blocks the flow of pee from the kidney to the bladder, it can lead to urinary tract infections (UTIs) and other symptoms.

Your health care provider talked to you about treatment. Surgery is often recommended to fix a ureterocele.

Follow your health care provider's instructions for:

• Giving your child any medicines. (Sometimes a low dose of antibiotic is given every day to prevent UTIs.)
• Going to see a urologist (doctor who specializes in urinary tract problems) or making any other appointments (such as scheduling surgery).
• When to follow up.

Your child has signs of a UTI, such as:

• Peeing more often than usual
• Pain when peeing
• Foul-smelling, bloody, or cloudy pee
• Belly or back pain
• Fever; if your baby is younger than 3 months old and has a rectal temperature of 100.4°F (38°C) or higher, take them to the ER
• Increased fussiness, poor feeding, or vomiting in babies

• Your baby is younger than 3 months old with a rectal temperature of 100.4°F (38°C) or higher.
• Your child is unable to pee.

What causes a ureterocele? It's not clear why some babies are born with a ureterocele. It can run in families, so there may be a genetic (inherited) cause. 

What are the symptoms of a ureterocele? Sometimes, there are no symptoms. If symptoms do happen, they may include UTIs, belly pain, trouble peeing, or blood in the pee. Over time, the kidney can be damaged by backflow of pee from the ureter into the kidney. 

What is the treatment for a ureterocele? Surgery can fix the problem. The surgeon may remove part or all of the ureterocele and may change the way that the ureter connects to the bladder.