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What is Duplicated ureter and explain in detail?
Duplicated ureter or Duplex Collecting System is a congenital condition in which the ureteric bud, the embryological origin of the ureter, splits (or arises twice), resulting in two ureters draining a single kidney. It is the most common renal abnormality, occurring in approximately 1% of the population.

Pathophysiology
Ureteral development begins in the human fetus around the 4th week of embryonic development