A Case Report of Endometriosis-induced Appendiceal Intussusception

Koichi Jinushi, Yozo Suzuki, Hiroshi Takeyama, Shingo Noura, Masakazu Ikenaga, Junzo Shimizu, Hiromi Tamura, Shiro Adachi, Naohiro Tomita
In: Nihon Daicho Komonbyo Gakkai Zasshi · 2022 · vol. 76(1) , pp. 40–44 · doi:10.3862/jcoloproctology.76.40 · W4312216265
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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-07 ⓘ

This case report describes a 40-year-old woman diagnosed with appendiceal tumor who underwent surgery for endometriosis-induced appendiceal intussusception, highlighting the diagnostic challenges of distinguishing it from appendiceal tumors.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-07 · read from full text ⓘ

The paper reports a rare case of appendiceal intussusception caused by endometriosis in a woman in her 40s who underwent evaluation for positive fecal occult blood. Endoscopic findings showed swelling at the appendiceal orifice with protrusion into the lumen, and CT identified a 25 mm cystic lesion without a clear solid component on the dorsal side of the cecum; based on the possibility of an appendiceal tumor that could not be excluded, the authors performed single-port laparoscopic-assisted ileocecal resection with D3 lymph node dissection. Pathology confirmed appendiceal intussusception due to appendiceal endometriosis. The paper relates to endometriosis because it is a case report specifically describing endometriosis-induced appendiceal intussusception and highlights diagnostic difficulty versus appendiceal tumor in a premenopausal patient.

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Abstract

虫垂子宮内膜症による虫垂重積症は比較的稀な疾患であり，虫垂腫瘍との鑑別が困難である．今回われわれは術前に虫垂腫瘍と診断し，単孔式腹腔鏡下回盲部切除術を施行した虫垂子宮内膜症による虫垂重積症の1例を経験したため報告する．症例は40歳代女性．便潜血反応陽性の精査目的で施行した下部消化管内視鏡検査で虫垂開口部の腫大と管腔側への突出を認めた．CTでは盲腸背側に明らかな充実部を伴わない径25mm大の嚢胞性病変を認め，虫垂腫瘍の可能性が否定できなかったため，単孔式腹腔鏡補助下回盲部切除術・D3郭清を施行した．病理組織学的診断は虫垂子宮内膜症による虫垂重積症であった．術前に症状や画像検査から虫垂腫瘍と虫垂子宮内膜症による虫垂重積症を鑑別するのは困難であるが，閉経前女性の虫垂病変においては子宮内膜症の可能性も考慮する必要がある．
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症例報告 虫垂子宮内膜症による虫垂重積症の1例 2023 年 76 巻 1 号 p. 40-44 詳細 抄録 虫垂子宮内膜症による虫垂重積症は比較的稀な疾患であり，虫垂腫瘍との鑑別が困難である．今回われわれは術前に虫垂腫瘍と診断し，単孔式腹腔鏡下回盲部切除術を施行した虫垂子宮内膜症による虫垂重積症の1例を経験したため報告する．症例は40歳代女性．便潜血反応陽性の精査目的で施行した下部消化管内視鏡検査で虫垂開口部の腫大と管腔側への突出を認めた．CTでは盲腸背側に明らかな充実部を伴わない径25mm大の嚢胞性病変を認め，虫垂腫瘍の可能性が否定できなかったため，単孔式腹腔鏡補助下回盲部切除術・D3郭清を施行した．病理組織学的診断は虫垂子宮内膜症による虫垂重積症であった．術前に症状や画像検査から虫垂腫瘍と虫垂子宮内膜症による虫垂重積症を鑑別するのは困難であるが，閉経前女性の虫垂病変においては子宮内膜症の可能性も考慮する必要がある． © 2023 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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