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Related Concept Videos

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The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma...
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The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
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Preoperative ManagementThe primary goals of preoperative management in kidney transplantation are to optimize the patient’s metabolic state and prepare them for surgery through diet adjustments, necessary dialysis, and tailored medical treatment. This phase also involves comprehensive infection screening and patient education about the surgical procedure and postoperative care to improve outcomes and adherence.Medical ManagementA comprehensive evaluation is required for both the living...
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The kidneys are a pair of bean-shaped organs in the human body that play a critical role in maintaining overall health. They filter out waste products from the blood, regulate blood pressure, maintain electrolyte balance, and stimulate the production of red blood cells.
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Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
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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
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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.

Urology Case Reports
|January 25, 2021
PubMed
Summary
This summary is machine-generated.

Kidney malrotation can cause pyelo-ureteric obstruction. Laparoscopic ureterocalicostomy effectively resolved pelvic dilatation in a child with severe kidney hyperrotation, offering a viable surgical solution.

Keywords:
Kidney malrotationLaparoscopic ureterocalicostomyPediatric urologyPyelo-ureteric joint obstruction

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Area of Science:

  • Pediatric Urology
  • Surgical Innovation
  • Renal Anatomy

Background:

  • Kidney malrotation presents unique surgical challenges in pediatric patients.
  • Pyelo-ureteric obstruction secondary to anomalous renal anatomy requires tailored treatment strategies.
  • Recurring urinary tract infections can be a symptom of underlying obstructive uropathy.

Observation:

  • A 3.5-year-old boy experienced recurrent urinary tract infections due to left pyelo-ureteric obstruction.
  • The obstruction was caused by significant kidney hyperrotation (270 degrees).
  • Comprehensive radiological assessment guided the surgical approach.

Findings:

  • A primary laparoscopic ureterocalicostomy was successfully performed.
  • The minimally invasive procedure completely resolved the pelvic dilatation.
  • This approach proved effective for this unusual anatomical presentation.

Implications:

  • Kidney malrotation exhibits diverse anatomical variations necessitating precise diagnostic work-up.
  • Laparoscopic ureterocalicostomy is a valuable primary surgical option for complex renal malformations.
  • This case highlights the importance of considering advanced laparoscopic techniques in pediatric urology for challenging cases.