👉 A pytocele is a condition in which a baby's bladder fails to develop properly, leading to a urine problem. This can cause frequent urination and difficulty passing urine. It's also known as "pyloric fistula," where the bladder joins the pelvis. The condition may be caused by a variety of factors, such as birth defects or infections in the urinary system. Treatment typically involves surgery to repair the bladder and allow for normal urine flow.