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Infantile polycystic kidney disease: an imaging dilemma
Insights
Infantile and adult polycystic kidney diseases are distinct genetic disorders. However, some infantile cases can mimic adult forms, highlighting the need for biopsies in diagnosing pediatric cystic kidney disease.
Area of Science:
- Pediatric Nephrology
- Medical Genetics
- Diagnostic Imaging
Background:
- Polycystic kidney disease (PKD) encompasses infantile and adult forms, typically differentiated by clinical, pathological, and radiological features.
- These genetic disorders affect kidney structure and function, presenting unique challenges in diagnosis and management.
Observation:
- This study reports on three pediatric patients diagnosed with infantile PKD.
- These children, aged 9 months to 6 years, exhibited renal and/or hepatic presentations resembling adult-type PKD.
- Diagnostic imaging, including excretory urogram and renal ultrasound, along with gross anatomical findings, initially suggested adult PKD.
Findings:
- The observed cases demonstrate that infantile PKD can present with imaging and anatomical characteristics similar to adult PKD.
- This diagnostic overlap underscores potential challenges in differentiating PKD types in young children based solely on initial assessments.
Implications:
- The findings emphasize the critical role of renal and liver biopsies for accurate diagnosis of cystic kidney disease in pediatric populations.
- Histopathological examination is crucial for definitive diagnosis when clinical and radiological findings are ambiguous.
- Early and accurate diagnosis is vital for appropriate management and prognosis of pediatric PKD.
Abstract:
Infantile and adult type polycystic kidney diseases are 2 disparate genetic disorders and generally are easily distinguishable on the basis of clinical, pathologic, and radiologic findings. We present 3 children with infantile polycystic kidney disease, ages 9 months to 6 years, in whom the excretory urogram and/or renal ultrasound or gross anatomical appearance of the kidneys resembled adult polycystic kidney disease. The findings from these 3 patients emphasize the importance of renal and liver biopsies in the diagnosis of cystic kidney disease in young children.