In a survey, many children are examined and were found to have urogenital abnormalities. Which congenital anomaly is associated with an increased risk of bladder carcinoma?
Congenital anomalies associated with an increased risk of bladder cancer are:

patent urachus
exstrophy bladder

Both increase the risk for adenocarcinoma.
Medullary sponge kidney
Bladder exstrophy
Unilateral renal agenesis
Double ureter