{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T12:06:33Z","timestamp":1776081993336,"version":"3.50.1"},"reference-count":9,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"C","license":[{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2022,2,10]],"date-time":"2022-02-10T00:00:00Z","timestamp":1644451200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction and importance:<\/jats:title>\n                    <jats:p>Duplex appendix is a rare anatomical entity with incidence rate of 0.004 and 0.009%. Diagnosis is often missed despite growth in radiological investigations. Missed appendiceal anomalies can lead to undesirable medicolegal implications.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case presentation:<\/jats:title>\n                    <jats:p>Here we discuss a case of a 76-year-old-male who initially presented to his primary care physician with right-sided abdominal pain for several weeks. A colonoscopy was performed and demonstrated a lesion arising from the appendicular orifice. The patient underwent staging imaging including Computerised Tomography of the abdomen and pelvis which demonstrated a dilated appendix. The patient underwent a laparoscopic right hemicolectomy. He made an uneventful recovery post-operatively and at his follow-up review at 4 weeks and 2 months.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion:<\/jats:title>\n                    <jats:p>While duplex appendix has been reported in the literature, to our knowledge this is the first case report to describe duplicated appendix presenting as a colonic mass in an elderly patient.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Intra-operative examination of the cecum is paramount to rule out appendiceal anomalies and prevent medicolegal complications.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Highlights<\/jats:title>\n                  <\/jats:sec>","DOI":"10.1016\/j.ijscr.2022.106829","type":"journal-article","created":{"date-parts":[[2022,2,12]],"date-time":"2022-02-12T11:22:01Z","timestamp":1644664921000},"page":"106829","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["Case report of the duplex vermiform appendix"],"prefix":"10.1097","volume":"92","author":[{"given":"Amenah","family":"Dhannoon","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mobarak","family":"Kunna","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dawn","family":"Baynes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Se\u00e1n O.","family":"Hynes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emmeline","family":"Nugent","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"R1-20-20260310","first-page":"437","article-title":"A study of 50,000 specimens of the human vermiform appendix","volume":"101","author":"Collins","year":"1955","journal-title":"Surg Gynecol Obstet"},{"key":"R2-20-20260310","first-page":"1259","article-title":"Duplicated vermiform appendix","volume":"83","author":"Kjossev","year":"1996","journal-title":"Br. J. Surg"},{"key":"R3-20-20260310","doi-asserted-by":"crossref","first-page":"559","DOI":"10.1016\/j.ijscr.2012.08.004","article-title":"Acute appendicitis in a duplicated appendix","volume":"3","author":"Christodoulidis","year":"2012","journal-title":"Int. J. Surg. Case Rep"},{"key":"R4-20-20260310","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1093\/jscr\/2011.2.3","article-title":"Appendiceal duplication with simultaneous acute appendicitis and appendicular perforation causing small bowel obstruction","volume":"2011","author":"Bali","year":"2011","journal-title":"J Surg Case Rep"},{"key":"R5-20-20260310","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1016\/j.ijscr.2020.08.023","article-title":"A rare case report of infant ileal atresia with double appendix","volume":"74","author":"Dhar","year":"2020","journal-title":"Int. J. Surg. Case Rep"},{"key":"R7-20-20260310","doi-asserted-by":"crossref","first-page":"1063","DOI":"10.1148\/radiographics.13.5.8210590","article-title":"Gastrointestinal tract duplications: clinical, pathologic, etiologic, and radiologic considerations","volume":"13","author":"Macpherson","year":"1993","journal-title":"Radiographics"},{"key":"R8-20-20260310","doi-asserted-by":"crossref","first-page":"574","DOI":"10.1007\/s00268-017-4178-1","article-title":"Appendiceal duplication: a comprehensive review of published cases and clinical recommendations","volume":"42","author":"Nageswaran","year":"2018","journal-title":"World J. Surg"},{"key":"R9-20-20260310","doi-asserted-by":"crossref","first-page":"180","DOI":"10.1016\/j.jemermed.2021.02.025","article-title":"Double appendix: implications for the emergency department","volume":"61","author":"Tinkham","year":"2021","journal-title":"J. Emerg. Med"},{"key":"R10-20-20260310","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1016\/j.ijsu.2020.10.034","article-title":"The SCARE 2020 guideline: updating consensus Surgical CAse REport (SCARE) guidelines","volume":"84","author":"Agha","year":"2020","journal-title":"Int. J. Surg"}],"container-title":["International Journal of Surgery Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S221026122200075X?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S221026122200075X?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.lww.com\/10.1016\/j.ijscr.2022.106829","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T10:01:48Z","timestamp":1773136908000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.lww.com\/10.1016\/j.ijscr.2022.106829"}},"subtitle":["A rare presentation in an elderly patient"],"short-title":[],"issued":{"date-parts":[[2022,3]]},"references-count":9,"journal-issue":{"issue":"C","published-print":{"date-parts":[[2022]]}},"URL":"https:\/\/doi.org\/10.1016\/j.ijscr.2022.106829","relation":{},"ISSN":["2210-2612"],"issn-type":[{"value":"2210-2612","type":"print"}],"subject":[],"published":{"date-parts":[[2022,3]]}}}