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Related Experiment Videos

The pathogenesis of hemorrhoids.

P A Haas, T A Fox, G P Haas

    Diseases of the Colon and Rectum
    |July 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Hemorrhoids, normal anal canal structures, can bulge and descend with aging due to connective tissue deterioration. This leads to symptomatic conditions like swelling and bleeding.

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    Area of Science:

    • Anatomy
    • Gastroenterology
    • Histology

    Background:

    • Hemorrhoids are normal anatomical structures within the anal canal.
    • They function as vascular pads that bulge into the lumen.

    Purpose of the Study:

    • To examine the histological structure of hemorrhoids.
    • To understand the anatomical changes associated with hemorrhoid symptoms.

    Main Methods:

    • Histological examination of anal canal tissue slides.
    • Analysis of hemorrhoid structure and supporting tissues.

    Main Results:

    • Hemorrhoids consist of lining, stroma with vascular and muscular components, and an anchoring connective tissue system.
    • Connective tissue deterioration with aging causes hemorrhoid bulging and descent, typically observable from the third decade.

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  • Vein distension, clot formation, swelling, and mucosal erosion with bleeding can occur due to lost support and trauma.

    • Conclusions:

    • Aging-related deterioration of connective tissue is a primary factor in hemorrhoid development and symptomatology.
    • Descent and altered vascularity of hemorrhoids contribute to common symptoms like pain, swelling, and bleeding.