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Updated: Jul 13, 2026

Unilateral Ureteral Obstruction Model for Investigating Kidney Interstitial Fibrosis
Published on: April 25, 2025
[Ureteral obstruction and Crohn's disease]
Sébastien Gaujoux1, Anne-Cécile Couchard, Joseph Al Youssef
1Service de chirurgie viscérale et digestive, Centre Hospitalier de Longjumeau, 159 rue du président François Mitterrand, 91164 Longjumeau Cedex.
Crohn's disease can cause noncalculous ureteral obstructions, often asymptomatic and on the right side. Early diagnosis and conservative management, including urine drainage and medication, are crucial, with surgery reserved for persistent cases.
Area of Science:
- Gastroenterology
- Urology
- Nephrology
Background:
- Noncalculous ureteral obstructions are a rare complication of Crohn's disease, affecting approximately 3% of patients.
- These obstructions predominantly occur on the right side due to associated ileocecal disease.
Observation:
- The case involves a 32-year-old woman presenting with noncalculous ureteral obstruction as the initial manifestation of Crohn's disease.
- Such obstructions are frequently asymptomatic and may be overlooked, potentially leading to complications like nephrectomy if associated with retroperitoneal inflammation or fibrosis.
Findings:
- Conservative management, including ureteral stenting or percutaneous nephrostomy, dietary modifications, and corticotherapy, is the recommended initial approach.
- Bowel resection is often necessary for definitive treatment, and ureterolysis may be required if conservative measures and bowel surgery fail to resolve the obstruction.
Implications:
- Highlights the importance of considering Crohn's disease in the differential diagnosis of noncalculous ureteral obstructions, especially in young adults.
- Emphasizes the need for a multidisciplinary approach involving gastroenterologists and urologists for optimal patient outcomes.
- Underscores the potential for early identification and management to prevent severe renal complications.
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