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初回のペントスタム症から20年後に再燃した好酸球性大腸炎
Taned Chitapanarux1, Tanop Srisuwan2
1Department of Internal Medicine, Chiang Mai University Faculty of Medicine, Chiang Mai, Thailand thaitaned@yahoo.com.
BMJ case reports
|February 10, 2026
まとめ
まれな寄生虫感染症である内臓ペントスタム症は、初診から数年後に好酸球性大腸炎を引き起こす可能性がある。この症例は、肺ペントスタム症から20年後に症状を呈した患者を示しており、長い潜伏期間と再燃の可能性を強調している。
科学分野:
- 寄生虫学、消化器病学、感染症学
背景:
- 内臓ペントスタム症はまれな寄生虫感染症である。
- 消化管の炎症性疾患に似ていることがある。
- 長い潜伏期間と晩期再燃の可能性がある。
研究 の 目的:
- 内臓ペントスタム症を好酸球性大腸炎として呈する症例を報告する。
- 長い潜伏期間と晩期再燃の可能性を強調する。
- 原因不明の消化管疾患において、まれな寄生虫病因を考慮することの重要性を強調する。
主な方法:
- タイ人女性(60代前半)の症例報告。
- 臨床症状:再発性の水様性下痢、末梢血好酸球増加(11%)。
- 診断ツール:大腸内視鏡検査、画像診断、組織病理検査。
主要な成果:
- 患者は肺ペントスタム症から20年後に好酸球性大腸炎を発症した。
- 大腸内視鏡検査では、複数の粘膜下腫瘍様病変が認められた。
- 組織病理検査では好酸球浸潤が認められ、残存する寄生虫物質による再燃性炎症を示唆していた。
結論:
- 内臓ペントスタム症は、極めて長い潜伏期間を持つことがある。
- 晩期再燃は好酸球性大腸炎として現れることがある。
- 原因不明の好酸球性消化管疾患においては、まれな寄生虫病因を考慮すべきである。
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