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Body stalk defects, body wall defects, amniotic bands with and without body wall defects, and gastroschisis:
M L Martínez-Frías1, E Bermejo, E Rodríguez-Pinilla
1ECEMC and Departamento de Farmacología Facultad de Medicina, Universidad Complutense, Madrid, Spain. luisima@eucmos.sim.ucm.es
Insights
Body wall complex (BWC) involves organ evisceration and congenital anomalies, distinct from gastroschisis. This study differentiates BWC subtypes, finding amniotic band-related defects are distinct and possibly linked to early gestation.
Area of Science:
- Medical Genetics
- Developmental Biology
- Pediatric Surgery
Background:
- Body wall complex (BWC) is defined by thoracic/abdominal organ evisceration and associated anomalies.
- BWC is distinguished from gastroschisis, typically an isolated umbilical defect.
- This study categorizes BWC into subgroups for detailed analysis.
Purpose of the Study:
- To differentiate between various body wall defects and related conditions.
- To analyze subgroups within the body wall complex, including those with and without amniotic bands.
- To compare these groups with gastroschisis and non-malformed controls.
Main Methods:
- Epidemiological study design.
- Classification of infants into distinct groups: BWC subgroups (body stalk anomalies, BWC without amniotic bands, BWC with amniotic bands), gastroschisis, amniotic bands without BWC, and controls.
- Comparative analysis across all groups.
Main Results:
- Amniotic bands with body wall affectation and without body wall defects are distinct entities.
- Infants with body wall defects caused by amniotic bands share characteristics with body stalk anomalies.
- This suggests a potential common etiology related to early gestation for these conditions.
Conclusions:
- Body wall defects associated with amniotic bands represent a distinct pathological entity.
- The findings suggest a developmental link between amniotic band-related body wall defects and body stalk anomalies.
- These observations support the hypothesis that amniotic band-related body wall defects originate in early embryonic development.
Abstract:
The presence of body wall defects with "evisceration" of thoracic and/or abdominal organs associated with other congenital anomalies, with or without limb deficiencies, is considered to be the body wall complex (BWC). The BWC is different from gastroschisis, which is usually a small body wall defect lateral to the umbilical cord that is not covered by any membrane and, in most of the cases, is an isolated defect. For the present analysis we separated the BWC group into three subgroups. One group was that of body stalk anomalies characterized by severe defects of the abdominal wall with absence of, or very small, umbilical cord, or this is continuing with the placenta. The second group was made up of those infants with body wall defects without amniotic bands, and the third group was of those children with body wall defects produced by amniotic bands. We considered two additional groups in the analysis, one was of infants with gastroschisis and the other those infants with amniotic bands without body wall affectation. We also included the control group (nonmalformed infants) for comparisons. From the results of our epidemiological study, we can conclude that amniotic bands with body wall affectation and amniotic bands without body wall defects are two different entities. The results also suggest that the characteristics of infants with amniotic bands with body wall defects are more similar to the group of infants with body stalk anomalies. This may indicate that the former group is produced during the very early gestation.