A Case of Appendiceal Intussusception Caused by Endometriosis of the Appendix and Ileum

Tsuneyuki Uchida, Hideaki Kato, Chikashi Hiranuma, Toru Watanabe
In: Nippon Daicho Komonbyo Gakkai Zasshi · 2013 · vol. 67(1) , pp. 45–50 · doi:10.3862/jcoloproctology.67.45 · W2327293928
article OA: bronze CC0 ⤵ 4 in-corpus citations
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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-08 ⓘ

This case report details a 47-year-old woman who underwent right hemicolectomy and ileal resection for appendiceal intussusception, surgically diagnosed and pathologically confirmed as caused by endometriosis of the appendix and ileum.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-11 · read from full text ⓘ

This case report describes a 47-year-old woman with a week of right lower abdominal pain, mild inflammatory marker elevation, and imaging findings of ileocecal intussusception (target-like appearance and pseudokidney sign), leading to emergency surgery. Intraoperatively, the appendix was found invaginated into the cecum with enlarged mesenteric lymph nodes, so right hemicolectomy was performed with consideration of malignant appendiceal intussusception, and an additional ileal resection was done because a submucosal ileal tumor was present; no similar lesions were found elsewhere in the abdomen. Histopathology identified ectopic endometrial tissue in the muscular layers of the intussuscepted appendix and the ileum, diagnosing appendiceal and ileal endometriosis. This paper is centrally about endometriosis—specifically endometriosis of the appendix and ileum causing appendiceal intussusception.

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Abstract

症例は47歳の女性で，1週間前から持続する右下腹部痛を主訴に受診した．右下腹部に筋性防御を認め，炎症反応の軽度上昇を認めた．腹部超音波および腹部造影CTでは回盲部にtarget like appearance，pseudokidney signを認め，回盲部腸重積の診断にて同日緊急手術を施行した．開腹すると盲腸内に腫瘤を触知し，虫垂が盲腸内に引き込まれた虫垂重積と診断した．腫大した腸間膜リンパ節も認めたため，悪性腫瘍による虫垂重積の可能性を考慮して結腸右半切除術を施行した．また，回腸に粘膜下腫瘍を認めたため回腸を追加切除し，腹腔内に類似病変を認めなかったため手術終了した．切除標本では，盲腸内に完全翻転した虫垂を認めた．病理組織学的検査では，重積した虫垂の筋層と回腸の筋層に異所性子宮内膜組織を認め，虫垂・回腸子宮内膜症と診断した．術後1年6ヵ月経過した現在，無症状，無再発である．
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症例報告 虫垂重積で発症した虫垂・回腸子宮内膜症の1例 2014 年 67 巻 1 号 p. 45-50 詳細 抄録 症例は47歳の女性で，1週間前から持続する右下腹部痛を主訴に受診した．右下腹部に筋性防御を認め，炎症反応の軽度上昇を認めた．腹部超音波および腹部造影CTでは回盲部にtarget like appearance，pseudokidney signを認め，回盲部腸重積の診断にて同日緊急手術を施行した．開腹すると盲腸内に腫瘤を触知し，虫垂が盲腸内に引き込まれた虫垂重積と診断した．腫大した腸間膜リンパ節も認めたため，悪性腫瘍による虫垂重積の可能性を考慮して結腸右半切除術を施行した．また，回腸に粘膜下腫瘍を認めたため回腸を追加切除し，腹腔内に類似病変を認めなかったため手術終了した．切除標本では，盲腸内に完全翻転した虫垂を認めた．病理組織学的検査では，重積した虫垂の筋層と回腸の筋層に異所性子宮内膜組織を認め，虫垂・回腸子宮内膜症と診断した．術後1年6ヵ月経過した現在，無症状，無再発である． © 2014 日本大腸肛門病学会 この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。 https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja

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endometriosis

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