PATHOLOGY

Detailed explanation-1: -Ureters are long, narrow tubes that drain urine from your kidneys to your bladder. Normally one ureter leads from each kidney to your bladder. In the case of duplicated systems, two ureters drain a single kidney. One ureter drains the upper pole of your kidney and the other drains the lower pole.

Detailed explanation-2: -These two ureters can drain independently into the bladder or connect and drain as a single ureter into the bladder. Duplex kidneys can occur in one or both kidneys. Duplex kidneys are a normal variant, meaning that they occur commonly enough in healthy children to be considered normal.

Detailed explanation-3: -In children with a duplex collecting system, also known as ureteral duplication, a kidney has two ureters (tubes that carry urine from the kidney to the bladder) rather than one.

Detailed explanation-4: -The abdominal ureter is the segment of the ureter that extends from the renal pelvis to the iliac vessels. The pelvic ureter extends from the iliac vessels to the bladder[3].