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What is Prune belly syndrome and explain in detail?
Prune belly syndrome is a rare, genetic birth defect affecting about 1 in 40,000 births. About 97% of those affected are male. Prune belly syndrome is a congenital disorder of the urinary system, characterized by a triad of symptoms. The syndrome is named for the mass of wrinkled skin that is often (but not always) present on the abdomen of those with the disorder.

Signs and symptoms
Prune-belly triad consists of signs such as: Cryptorchidism, abdominal wall defects and genitourinary defects:
A partial or complete lack of abdominal wall muscles. There may be wrinkly folds of skin covering the abdomen.
Cryptorchidism (undescended testicles) in males
Urinary tract abnormality such as unusually large ureters, distended bladder, accumulation and backflow of urine from the bladder to the ureters and the kidneys (vesicoureteral reflux)Other signs include:

Frequent urinary tract infections due to the inability to properly expel urine.
Ventricular septal defect
Malrotation of the gut
Club foot
Later in life, a common symptom is post-ejaculatory discomfort.  Most likely a bladder spasm, it lasts about two hours.
Musculoskeletal abnormalities include pectus excavatum, scoliosis, and congenital joint dislocations including the hip. Diagnosis of prune belly syndrome necessitates a thorough orthopaedic evaluation because of the high prevalence of associated musculoskeletal abnormalities.
Pulmonary hypoplasia, pneumonia, and atelectasis involving lung lobes

Complications
Prune belly syndrome can result in distention and enlargement of internal organs such as the bladder and intestines. Surgery is often required but will not return the organs to a normal size. Bladder reductions have shown that the bladder will again stretch to its previous size due to lack of muscle. Complications may also arise from enlarged/malformed kidneys, which may result in kidney failure and the childs going on dialysis or requiring a kidney transplant. Many individuals with prune belly syndrome have good physical and mental health, despite all the concerns