The multicystic dysplastic kidney in children

Area of Science:

• Pediatric Urology
• Neonatal Surgery
• Renal Pathology

Background:

• Multicystic dysplastic kidney (MCDK) is the most prevalent renal cystic disease in infants and a frequent neonatal abdominal mass.
• MCDK signifies a severe form of renal dysplasia, characterized by non-functioning kidneys, ureteral obstruction, and abnormal morphology.
• Current management strategies for MCDK remain a subject of debate, with prognosis heavily influenced by co-existing anomalies and contralateral kidney health.

Purpose of the Study:

• To evaluate the outcomes of surgical management (nephrectomy) for multicystic dysplastic kidney (MCDK) in infants.
• To assess the frequency of associated anomalies and contralateral kidney pathology in patients with MCDK.
• To compare outcomes between surgically treated and conservatively managed MCDK cases.

Main Methods:

• A retrospective review of twelve infant patients diagnosed with multicystic kidney (MCK) between September 1982 and September 1991.
• Ten patients underwent elective nephrectomy, with postoperative outcomes monitored.
• Two patients were managed non-operatively with close ultrasound follow-up.

Main Results:

• Elective nephrectomy was performed on ten patients with an uneventful postoperative course.
• A high incidence of associated anomalies (41.6%) and contralateral kidney pathology (50%) was observed in the study cohort.
• One non-operatively managed patient experienced recurrent urinary tract infections, and another succumbed to multiple congenital anomalies.

Conclusions:

• Nephrectomy appears to be a safe and effective treatment for symptomatic or concerning cases of MCDK in infants.
• The significant prevalence of associated anomalies and contralateral kidney abnormalities underscores the importance of comprehensive evaluation and long-term monitoring.
• Conservative management may be an option for select cases, but requires vigilant follow-up due to potential complications.