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An anal fissure is a tear in the epithelial lining of the distal anal canal. The exact etiology remains uncertain, but the disease seems to be related to sphincter hypertonicity, ischemia, and mechanical stress (the anorectal angle creates the greatest stress posteriorly).

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Anorectal Diseases

  • 工具书词条

  • 发表日期：

    2025年

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  • Mikhael Belkovsky,
  • Mariana Escani Guerra,
  • Fábio Henrique de Carvalho,
  • Adonis Nasr,
  • Phillipe Abreu

摘要

An anal fissure is a tear in the epithelial lining of the distal anal canal. The exact etiology remains uncertain, but the disease seems to be related to sphincter hypertonicity, ischemia, and mechanical stress (the anorectal angle creates the greatest stress posteriorly).