{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T16:41:03Z","timestamp":1776962463836,"version":"3.51.4"},"reference-count":9,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T00:00:00Z","timestamp":1776902400000},"content-version":"vor","delay-in-days":22,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,4,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Appendix intussusception (AI), with ~200 reported cases, is a rare condition in which the appendix invaginates into the cecum [1]. Etiologies include benign and malignant pathologies including both intraluminal and extraluminal lesions, but dual pathology has not been described previously. We present a case of a 52-year-old female with colonoscopic findings suspicious for AI or a submucosal lesion. Surgical pathology following appendectomy revealed AI caused by both endometriosis and a mucinous adenoma. AI is usually diagnosed incidentally on laparoscopy. Though rarely diagnosed preoperatively, recognizing AI on colonoscopy is critical. To our knowledge, this is the first reported case of AI due to both endometriosis and mucinous neoplasm.<\/jats:p>","DOI":"10.1093\/jscr\/rjag291","type":"journal-article","created":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T11:47:53Z","timestamp":1775130473000},"source":"Crossref","is-referenced-by-count":0,"title":["Appendiceal inversion secondary to endometriosis and dilated mucinous adenoma identified on screening colonoscopy"],"prefix":"10.1093","volume":"2026","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-7182-5147","authenticated-orcid":false,"given":"Rhianna","family":"Bhatia","sequence":"first","affiliation":[{"name":"Hackensack Meridian School of Medicine at Hackensack University Medical Center , 123 Metro Blvd, Nutley, New Jersey 07110 ,","place":["United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David T","family":"Guerrero","sequence":"additional","affiliation":[{"name":"Department of Surgery, Hackensack University Medical Center , 30 Prospect Ave, Hackensack, New Jersey 07601,","place":["United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Neetu","family":"Chahil","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology, Hackensack University Medical Center , 30 Prospect Ave, Hackensack, New Jersey 07601 ,","place":["United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongfa","family":"Zhu","sequence":"additional","affiliation":[{"name":"Department of Pathology, Hackensack University Medical Center , 30 Prospect Ave, Hackensack, New Jersey 07601 ,","place":["United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Asha G","family":"Bale","sequence":"additional","affiliation":[{"name":"Department of Surgery, Hackensack University Medical Center , 30 Prospect Ave, Hackensack, New Jersey 07601,","place":["United States"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2026,4,23]]},"reference":[{"key":"2026042311551060800_ref1","first-page":"25","article-title":"Intussusception of the appendix secondary to endometriosis","volume":"4","author":"Paolini","year":"2023","journal-title":"ACS Case Reviews in Surgery"},{"key":"2026042311551060800_ref2","doi-asserted-by":"publisher","first-page":"952","DOI":"10.1016\/j.radcr.2019.05.022","article-title":"An inverted appendix found on routine colonoscopy: a case report with discussion of imaging findings","volume":"14","author":"Tran","year":"2019","journal-title":"Radiol Case Rep"},{"key":"2026042311551060800_ref3","first-page":"365","article-title":"Seventy-one thousand human appendix specimens: a final report summarizing forty years of study","volume":"14","author":"Collins","year":"1963","journal-title":"Am J Proctol"},{"key":"2026042311551060800_ref4","doi-asserted-by":"publisher","first-page":"122","DOI":"10.1016\/j.amjsurg.2008.08.023","article-title":"Intussusception of the appendix: comprehensive review of the literature","volume":"198","author":"Chaar","year":"2009","journal-title":"Am J Surg"},{"key":"2026042311551060800_ref5","doi-asserted-by":"publisher","first-page":"261","DOI":"10.1186\/s40792-024-02054-x","article-title":"Intussusception of the appendix secondary to endometriosis: a case report","volume":"10","author":"Kawaguchi","year":"2024","journal-title":"Surg Case Rep"},{"key":"2026042311551060800_ref6","doi-asserted-by":"publisher","first-page":"S217","DOI":"10.14309\/00000434-200809001-00562","article-title":"Endometriosis: an unusual cause of inverted appendix. A case report and review of the literature","volume":"103","author":"Robson","year":"2008","journal-title":"Am J Gastroenterol"},{"key":"2026042311551060800_ref7","first-page":"488","article-title":"Colonoscopic diagnosis of appendiceal intussusception: case report and review of the literature","volume":"9","author":"Duncan","year":"2005","journal-title":"JSLS."},{"key":"2026042311551060800_ref8","doi-asserted-by":"publisher","first-page":"1107","DOI":"10.1634\/theoncologist.2017-0081","article-title":"Appendiceal mucinous neoplasms: diagnosis and management","volume":"22","author":"Shaib","year":"2017","journal-title":"Oncologist"},{"key":"2026042311551060800_ref9","doi-asserted-by":"publisher","first-page":"14","DOI":"10.1102\/1470-7330.2013.0003","article-title":"Mucinous neoplasms of the appendix: a current comprehensive clinicopathologic and imaging review","volume":"13","author":"Tirumani","year":"2013","journal-title":"Cancer Imaging"}],"container-title":["Journal of Surgical Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/jscr\/article-pdf\/2026\/4\/rjag291\/68143413\/rjag291.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/jscr\/article-pdf\/2026\/4\/rjag291\/68143413\/rjag291.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T15:55:18Z","timestamp":1776959718000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/jscr\/article\/doi\/10.1093\/jscr\/rjag291\/8661421"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,4,1]]},"references-count":9,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2026,4,1]]}},"URL":"https:\/\/doi.org\/10.1093\/jscr\/rjag291","relation":{},"ISSN":["2042-8812"],"issn-type":[{"value":"2042-8812","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2026,4]]},"published":{"date-parts":[[2026,4,1]]},"article-number":"rjag291"}}