Primary obstructive megaureter

Ahmed Ibrahimi, Idriss Ziani

PAMJ. 2020; 37:296. Published 02 Dec 2020 | doi:10.11604/pamj.2020.37.296.26867

Primary obstructive megaureter (POM) is an uncommon disease in adults, it is defined as an intrinsic congenital abnormality at the lower segment of the ureter in the ureterovesical junction. It is generally unilateral, but may be seen bilaterally in 15% to 25% of cases and occurs more often in males. Symptoms includes flank pain, recurrent urinary tract infection, hematuria and acute renal colic. Chronic ureteral obstruction may lead to serious complications such as infection, stone formation and renal failure. Primary symptomatic or complicated obstructive megaureter requires surgical management, using different surgical techniques, consisting of excision of the adynamic ureteral segment and reimplantation into the bladder. We present a case of 19-year-old young male, without past medical history, presented to the emergency department with intermittent recurrent left flank pain for the last three years, without lower urinary tract symptoms (LUTS), fever or haematuria. On clinical examination, his abdomen was soft to palpate, with no tenderness. Routine laboratory tests were normal. Urinary ultrasonography (US) revealed a giant left hydroureteronephrosis, with reduction in cortical thickness. Abdominal and pelvic computed tomography (CT) showed a left giant hydroureteronephrosis (A, B and C) and huge dilatation of left ureter with tortuosity down to the urinary bladder (B and C). These findings allowed us to retain the diagnosis of primary obstructed megaureter. The patient underwent an excision of the terminal narrow adynamic ureteral segment, with laparoscopic transperitoneal ureteral reimplantation according to the Lich–Gregoir technique. The postoperative course was completely uneventful. The patient was discharged from the hospital at the 5th postoperative day without any complication. At the follow-up, he was healthy, with normal renal function, without dilatation of the collecting system or vesicoureteral reflux.
Corresponding author
Ahmed Ibrahimi, Department of Urology A, Faculty of Medicine and Pharmacy, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco (

The Pan African Medical Journal (ISSN: 1937-8688) is a subsidiary of the Pan African Medical Journal. The contents of this journal is intended exclusively for professionals in the medical, paramedical and public health and other health sectors.

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