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Clinical/epidemiological analysis of malformations.
M L Martinez-Frías1, J L Frías, J Salvador
1Estudio Colaborativo Español de Malformaciones Congénitas, Facultad de Medicina, Universidad Complutense, Madrid, Spain.
American Journal of Medical Genetics
|January 1, 1990
Summary
Congenital malformations show significant variability in occurrence across different etiological categories. Certain anomalies appear in all syndrome types, while others are absent in specific classifications, aiding clinical evaluation of multiple congenital anomalies (MCA).
Area of Science:
- Medical Genetics
- Developmental Biology
- Pediatric Medicine
Background:
- Congenital malformations represent a heterogeneous group of developmental defects.
- Understanding the distribution patterns of specific anomalies is crucial for etiological classification and clinical management.
- Multiple congenital anomalies (MCA) require careful assessment to identify underlying causes and predict outcomes.
Purpose of the Study:
- To investigate the heterogeneity and distribution patterns of 14 selected congenital malformations.
- To analyze anomaly distribution in children with isolated defects versus those with multiple congenital anomalies (MCA).
- To provide insights for clinicians evaluating children with MCA.
Main Methods:
- Analysis of a cohort of 11,421 children.
- Categorization based on isolated defects and different patterns of multiple congenital anomalies (MCA).
- Examination of the distribution of 14 specific congenital malformations across etiological categories.
Main Results:
- Significant variability was observed in the distribution of each malformation studied.
- Anophthalmia/microphthalmia, cleft palate, and limb deficiency were present across all etiological categories of syndromes.
- Anencephaly was not identified in any of the 1,244 children with different syndromes.
- Diaphragmatic hernia, esophageal atresia +/- tracheoesophageal fistula, and gastroschisis were absent in monogenic syndromes within this sample.
Conclusions:
- The distribution of congenital malformations is highly variable and dependent on etiological categories.
- Specific anomalies can serve as indicators or exclusions for certain syndromic classifications.
- These findings can assist clinicians in the diagnostic evaluation of children with MCA.