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Related Experiment Videos

Zonal colonic aganglionosis

P J Haney, J L Hill, C C Sun

    Pediatric Radiology
    |January 1, 1982
    PubMed
    Summary

    Segmental aganglionosis is a rare variant of Hirschsprung disease where only a limited colon segment lacks nerve cells. Recognizing this pattern is crucial for diagnosing Hirschsprung

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    Area of Science:

    • Pediatric Surgery
    • Gastroenterology
    • Medical Imaging

    Background:

    • Hirschsprung's disease diagnosis typically relies on identifying a distal aganglionic segment reaching the anal margin.
    • Standard diagnostic criteria may overlook atypical presentations of the disease.

    Observation:

    • Segmental aganglionosis presents as a limited, isolated segment of aganglionic colon.
    • This affected segment is situated between normally innervated bowel sections.

    Findings:

    • This variant can lead to misinterpretation of barium enema results in children with Hirschsprung's symptoms.
    • Normal rectal biopsy findings can occur despite the presence of segmental aganglionosis.

    Implications:

    • Increased awareness of segmental aganglionosis improves diagnostic accuracy for Hirschsprung's disease.
    • This knowledge is vital for interpreting imaging studies, particularly when rectal biopsies are inconclusive.