Uniteral duplex collecting system of kidneys with incomplete
Congenital anomalies of the kidney and urinary tract exhibit a wide anatomic spectrum. Incomplete duplication is three times more common than complete duplication, which is reported to occur in about one of every 500 people. The present case has been reported in the journal Urology Case Reports.

In the routine educational dissection in the academic year 2017-2018 in our department of anatomy, in a male cadaver of about 50 years on the right side, two ureters were observed-first ureter(U1) from the hilum and the second ureter(U2) 2cms below the first ureter.

The U1 was medial to the U2 in its upper course and then crossed two times the U2 from behind and again reached medial to the U2.The two ureters joined and formed a common channel before piercing the ureter.

When the right kidney was opened, two separate pelvicalyceal systems were observed. The single ureter was observed on left side.

Clinical pearls:-
- When symptomatic the recommended treatment for a duplex system is by ureterectomy or upper-pole heminephrectomy.

- Surgical approaches can be either open or laparoscopic, with laparoscopic gaining more favour except in complicated cases such as in our patient.

- Radiologists and surgeons should be aware that duplex systems may not always be visible on urography and sonography.

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