Unilateral multicystic dysplastic kidney: single-center experience

Area of Science:

• Pediatric Nephrology
• Urology
• Medical Imaging

Background:

• Multicystic dysplastic kidney (MCDK) is a frequent congenital renal anomaly in children.
• Understanding the clinical trajectory and outcomes of MCDK is crucial for pediatric patient management.

Purpose of the Study:

• To evaluate the clinical course and long-term outcomes of pediatric patients diagnosed with unilateral MCDK.
• To assess the indications for and effectiveness of nephrectomy in managing MCDK complications.

Main Methods:

• Retrospective analysis of 90 pediatric patients with unilateral MCDK.
• Utilized dimercaptosuccinic acid scans and voiding cystourethrograms for diagnosis and assessment.
• Reviewed patient data from 1990-2007, focusing on clinical course, interventions, and outcomes.

Main Results:

• 22.2% of patients had contralateral renal abnormalities.
• Nephrectomy was performed in 45.5% of cases, primarily for hypertension (23.1%) or recurrent UTIs (15.9%).
• MCDK involuted spontaneously in 39.3% of patients within 48 months; no malignant transformation, proteinuria, or renal failure was observed.

Conclusions:

• Hypertension is a common finding in infants with MCDK, often resolving post-nephrectomy.
• Conservative management is increasingly favored over routine nephrectomy for MCDK.
• Further prospective research is necessary to determine the potential for spontaneous hypertension improvement in pediatric MCDK.