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Updated: Nov 20, 2025

A Mouse Model to Evaluate the Long-Term Structural and Functional Outcomes after the Reversal of Prolonged Unilateral Ureteric Obstruction
Published on: July 18, 2025
Hydronephrosis caused by kidney malrotation
Natalie Divjak1, Jacques Birraux2, Hassib Chehade3
1Centre Universitaire Romand de Chirurgie Pédiatrique, Division of Pediatric Surgery of Lausanne, CHUV, Lausanne, Switzerland.
Abstract:
Hydronephrosis associated with kidney malrotation can be a surgical challenge. We present the case of a 3.5 y.o.-boy presenting with left pyelo-ureteric obstruction caused by kidney hyperrotation (270°) resulting in recurring urinary tract infection. After complete radiological work-up, we opted for a primary laparoscopic ureterocalicostomy, which allowed for complete resolution of the pelvic dilatation. Kidney malrotation can present with a wide variation in anatomic features. Radiological work-up is the cornerstone of surgical strategy planning. Laparoscopic ureterocalicostomy is a useful primary option in unusual anatomical situations.
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