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Isolated Dandy-Walker malformation: prenatal diagnosis in two consecutive pregnancies
1Department of Obstetrics and Gynecology, University Hospital Vienna, Austria.
American Journal of Perinatology
|June 4, 1999
Summary
Recurrent Dandy-Walker malformation (DWM) occurred in three offspring from the same family. Genetic factors may cause this rare condition, indicating a high risk for future pregnancies.
Area of Science:
- Neuroscience
- Medical Genetics
- Developmental Biology
Background:
- Dandy-Walker malformation (DWM) is a congenital brain abnormality.
- Recurrence of DWM within families is uncommon but significant.
Observation:
- A family presented with multiple affected offspring diagnosed with isolated DWM.
- Prenatal ultrasonography identified DWM in the first child and subsequently in dizygotic twins.
- All affected infants had normal chromosome analysis and no other congenital anomalies.
Findings:
- The observed pattern suggests a potential genetic transmission of isolated DWM.
- Autosomal or X-linked recessive inheritance is hypothesized for rare familial cases.
- This family's case highlights a high recurrence risk for DWM.
Implications:
- Understanding the genetic basis of DWM is crucial for genetic counseling.
- Early prenatal diagnosis of DWM can inform family planning decisions.
- Further research into familial DWM patterns may reveal specific genetic markers or pathways.