THE CASE OF ISOLATED APPENDICEAL ENDOMETRIOSIS MIMICKING APPENDICITIS

Murat Uludağ, Mustafa Dönmez, Feray AYDIN, Murat ÖZKIRLI
In: Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi · 2021 · vol. 18(2) , pp. 854–857 · doi:10.38136/jgon.785485 · W3158339452
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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-13 ⓘ

This case report describes a woman with cyclical right lower quadrant pain whose appendiceal endometriosis, identified by ultrasound and CT, was confirmed and resolved by appendectomy.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-13 · read from full text ⓘ

This paper reports an isolated appendiceal endometriosis case that presented clinically as acute appendicitis, leading to evaluation and management in the setting of right lower quadrant pain. The authors describe the diagnostic confusion caused by an endometriosis lesion mimicking an acute abdomen, with confirmation based on the case course and pathological findings typical of appendiceal endometriosis. As a single case report, the main limitation is that it cannot establish incidence or generalizable diagnostic or treatment patterns. This paper is centrally about endometriosis — it specifically documents isolated appendiceal endometriosis that mimicked appendicitis.

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Abstract

Endometriosis is the presence of endometrial tissue outside the uterine cavity. It is mostly seen in the pelvis but can also affect the extrapelvic areas of the body. Gastrointestinal (GI) tract is the most frequently affected extrapelvic site and rarely involves the appendix. When it occurs, may mimick appendicitis. We present a childbearing-age woman suffering from right lower quadrant (RLQ) pain. Her complaint was repeating cyclically for 8 months. Abdominal ultrasound (US) disclosed wall thickening at tip of the appendix and small amount of fluid around it, suggesting distal appendicitis. Computed tomography (CT) depicted approximately a 1 cm nodulary mass on tip of the appendix. Then appendectomy was performed and histopathological examination yielded appendiceal endometriosis (AE). She was recovered well and free of her symptom. This report emphasizes the isolated appendiceal endometriosis, which can cause right lower quadrant pain and mimick appendicitis.
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- 1. Gupta R, Singh AK, Farhat W, Ammar H, Azzaza M, Mizouni A, et al. Appendicular endometriosis: A case report and review of literature. Int J Surg Case Rep 2019; 64: 94-96. - 2. Charatsi D, Koukoura O, Ntavela IG, Chintziou F, Gkorila G, Tsagkoulis M, et al. Gastrointestinal and Urinary Tract Endometriosis: A Review on the Commonest Locations of Extrapelvic Endometriosis. Adv Med. 2018 Sep 26;2018:3461209. - 3. Hwang BJ, Jafferjee N, Paniz-Mondolfi A, Baer J, Cooke K, Frager D. Nongynecological Endometriosis Presenting as an Acute Abdomen. Emerg Radiol 2012 Oct; 19(5): 463-71. - 4. Teiga E, Radosevic A, Sánchez J, Busto M, Aguilar G, Maiques J, et al. A Rare Case of Right Lower Quadrant Pain BJR Case Rep 2018 Oct 31; 5(2): 20170024. - 5. Mabrouk M, Raimondo D, Mastronardi M, Raimondo I, Del Forno S, Arena A, et al. Endometriosis of the Appendix: When to Predict and How to Manage-A Multivariate Analysis of 1935 Endometriosis Cases J Minim Invasive Gynecol 2020 Jan; 27(1): 100-106. - 6. Unver N, Coban G, Arıcı DS, Buyukpınarbasılı N, Gucin Z, Malya FÜ, et al. Unusual Histopathological Findings in Appendectomy Specimens: A Retrospective Analysis of 2047 Cases. Int J Surg Pathol 2019 Apr; 27(2): 142-146. - 7. Berker B, Lashay N, Davarpanah R, Marziali M, Nezhat CH, Nezhat C. Laparoscopic Appendectomy in Patients With Endometriosis J Minim Invasive Gynecol May-Jun 2005;12(3):206-9. - 8. V Remorgida , N Ragni, S Ferrero, P Anserini, P Torelli, E Fulcheri. The Involvement of the Interstitial Cajal Cells and the Enteric Nervous System in Bowel Endometriosis. Hum Reprod 2005 Jan; 20(1): 264-71. Details Primary Language English Subjects Clinical Sciences, Obstetrics and Gynaecology Journal Section Case Report Authors Murat Uludağ 0000-0001-6356-7563 Türkiye Mustafa Dönmez * 0000-0003-2598-7019 Türkiye Feray Aydın 0000-0002-2847-4780 Türkiye Murat Özkırlı This is me 0000-0003-4670-7637 Türkiye Publication Date July 1, 2021 Submission Date August 25, 2020 Acceptance Date May 5, 2021 Published in Issue Year 2021 Volume: 18 Number: 2

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endometriosis

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