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Congenital urinary abnormalities and neural tube defects
W L Robson1, A K Leung, O J Sinclair
1Department of Pediatrics, University of Calgary, Alta., Canada.
Child Nephrology and Urology
|January 1, 1991
Summary
Congenital urinary malformations affect 6% of children with neural tube defects. Unilateral renal agenesis is common, but fusion/migration abnormalities are also frequent, with no link to the neural tube defect level.
Area of Science:
- Pediatric Urology
- Developmental Biology
- Medical Genetics
Background:
- Neural tube defects (NTDs) are congenital abnormalities affecting the brain and spine.
- Congenital urinary malformations (CUMs) can occur alongside NTDs, impacting renal development and function.
- Understanding the spectrum of CUMs associated with NTDs is crucial for comprehensive patient management.
Purpose of the Study:
- To investigate the prevalence and patterns of congenital urinary malformations in children diagnosed with neural tube defects.
- To identify specific types of urinary tract abnormalities associated with NTDs.
- To explore potential correlations between the location of the neural tube defect and the type of urinary malformation.
Main Methods:
- Retrospective review of medical records for 178 children with diagnosed neural tube defects.
- Analysis of recorded congenital urinary malformations, categorizing them by type and location.
- Statistical assessment to determine the frequency of CUMs and explore associations with NTD levels.
Main Results:
- Ten percent (6%) of the 178 children reviewed presented with significant congenital urinary malformations.
- Unilateral renal agenesis was the most frequent single urinary abnormality identified.
- Abnormalities in renal fusion or migration were equally common as unilateral renal agenesis in this cohort and more prevalent than reported in some prior studies. Lower urinary tract abnormalities were also observed but less frequently.
- No statistically significant correlation was found between the spinal level of the neural tube defect and the specific type of congenital urinary malformation.
Conclusions:
- Congenital urinary malformations are a notable comorbidity in children with neural tube defects, occurring in 6% of cases.
- While unilateral renal agenesis is common, renal fusion and migration anomalies represent a significant proportion of associated urinary tract abnormalities.
- The findings suggest that the specific type of congenital urinary malformation is independent of the neural tube defect's spinal level, highlighting the complexity of developmental interactions.