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[Cystic kidneys in children]
B S Oemar1, P F Hoyer, J H Ehrich
1Kinderklinik, Medizinischen Hochschule Hannover.
Insights
Infantile recessive polycystic kidney disease (IRPKD) presents severe challenges including hypertension and renal decline, while adult dominant polycystic kidney disease (ADPKD) shows a milder pediatric course. Differentiating these forms is crucial for prognosis.
Area of Science:
- Pediatric Nephrology
- Medical Genetics
Context:
- Polycystic kidney disease (PKD) encompasses genetic disorders affecting infants and children.
- Distinguishing between infantile recessive PKD (IRPKD) and adult dominant PKD (ADPKD) in pediatric cases is clinically significant.
Purpose:
- To compare the clinical presentation, management, and outcomes of IRPKD and ADPKD in a pediatric cohort.
- To identify key diagnostic criteria for differentiating IRPKD and ADPKD in children.
Summary:
- A cohort of 26 children with PKD (13 IRPKD, 13 ADPKD) treated between 1976-1987 was analyzed.
- IRPKD cases manifested earlier and exhibited severe hypertension, reduced renal function, and higher mortality.
- ADPKD cases generally presented with a less severe clinical course and better renal function in childhood.
Impact:
- Early differentiation of IRPKD and ADPKD is vital for predicting disease severity and guiding therapeutic strategies.
- Findings suggest that while IRPKD has a poorer prognosis, it may not be as universally fatal as previously assumed.
- This study aids in understanding the long-term pediatric implications of different PKD genetic forms.
Abstract:
From 1976-1987 a total of 26 infants and children with polycystic kidney disease were treated at the Children's Hospital of the Medical School Hannover. 13 of them suffered from infantile recessive polycystic kidney disease (IRPKD), and 13 from adult dominant polycystic kidney disease (ADPKD). IRPKD was diagnosed at a median age of 0.33 years (range 1 day-13 years), ADPKD at 6.0 years (3 days-14 years). Of those with IRPKD two infants died from bacterial infection and two others developed terminal renal insufficiency at the age of 8 years, while the others are living and 1-20 years old. All those suffer from severe arterial hypertension and have reduced renal function, but only 5 developed signs of liver fibrosis. Of those with ADPKD one infant died from sepsis and renal insufficiency, while the others are well and now 2-17 years old. Only one child needs an antihypertensive treatment. The most important criteria to differentiate IRKPD and ADKPD in children are the genetic transmission, age of first manifestation, hypertension and renal function. The prognosis is much more severe in IRPKD than in ADPKD, but is not as infaust in IRPKD as often assumed.