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Related Experiment Videos

Pancreas annulare in human embryos.

I A Kirillova, V P Kulazhenko, L G Kulazhenko

    Acta Anatomica
    |January 1, 1984
    PubMed
    Summary

    Pancreas annulare with duodenal stenosis occurs in 0.06% of early embryos, suggesting many affected fetuses do not survive. This prenatal elimination highlights the severity of this congenital anomaly.

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    Area of Science:

    • Embryology
    • Developmental biology
    • Gastrointestinal pathology

    Background:

    • Pancreas annulare and duodenal stenosis are congenital anomalies.
    • These conditions can lead to significant gastrointestinal issues in neonates.

    Observation:

    • Two cases of pancreas annulare with duodenal stenosis were identified in 3,307 early-term induced abortuses (5-12 weeks gestation).
    • The observed incidence of 0.06% is significantly higher than in neonates, suggesting prenatal elimination.

    Findings:

    • Microscopic analysis revealed the annular pancreas originates from the ventral anlage.
    • Underdevelopment of the annular pancreas may lead to later fibrosis.
    • Duodenal stenosis associated with pancreas annulare originates by 8 weeks of gestation.
    • Stenosis results from both external compression and anomalous intestinal differentiation, potentially due to disrupted morphogenetic correlations.

    Implications:

    • The findings suggest a high rate of prenatal mortality for embryos with pancreas annulare and duodenal stenosis.
    • Understanding the early developmental origins can inform future research into prevention or management.
    • This study provides insights into the complex interplay of factors causing these congenital gastrointestinal malformations.

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