{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T04:37:13Z","timestamp":1769747833748,"version":"3.49.0"},"reference-count":7,"publisher":"BMJ","issue":"1","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,1,19]]},"published-print":{"date-parts":[[2026,1]]},"DOI":"10.1136\/bcr-2025-270621","type":"journal-article","created":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T14:40:26Z","timestamp":1769697626000},"page":"e270621","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Revealing handstand: an anal canal duplication"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-3502-5876","authenticated-orcid":false,"given":"Catarina","family":"Tavares","sequence":"first","affiliation":[{"name":"Pediatrics, ULS Viseu D\u00e3o-Laf\u00f5es, Viseu, Portugal"},{"name":"Pediatrics, Coimbra University Hospital Centre, Coimbra, Coimbra District, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helena","family":"Pereira","sequence":"additional","affiliation":[{"name":"Pediatrics, ULS Viseu D\u00e3o-Laf\u00f5es, Viseu, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patricia","family":"Horta","sequence":"additional","affiliation":[{"name":"Pediatric Surgery, ULS Viseu D\u00e3o-Laf\u00f5es, Viseu, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Concei\u00e7\u00e3o","family":"Salgado","sequence":"additional","affiliation":[{"name":"Pediatric Surgery, ULS Viseu D\u00e3o-Laf\u00f5es, Viseu, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2026,1,29]]},"reference":[{"key":"2026012906401648000_19.1.e270621.1","doi-asserted-by":"crossref","first-page":"633","DOI":"10.1007\/s00431-009-1094-x","article-title":"Anal canal duplication","volume":"169","author":"Narci","year":"2010","journal-title":"Eur J Pediatr"},{"key":"2026012906401648000_19.1.e270621.2","article-title":"Early Diagnosis of Anal Canal Duplication: The Importance of a Physical Examination","volume":"14","author":"Karamatzanis","year":"2022","journal-title":"Cureus"},{"key":"2026012906401648000_19.1.e270621.3","doi-asserted-by":"crossref","first-page":"908390","DOI":"10.3389\/fsurg.2022.908390","article-title":"Anal Canal Duplication Mimicking Recurrent Abscess: A Case Report and Review of the Literature","volume":"9","author":"Li","year":"2022","journal-title":"Front Surg"},{"key":"2026012906401648000_19.1.e270621.4","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1007\/s003830100691","article-title":"Anal-canal duplication in a 6-year-old child","volume":"18","author":"Ochiai","year":"2002","journal-title":"Pediatr Surg Int"},{"key":"2026012906401648000_19.1.e270621.5","doi-asserted-by":"crossref","first-page":"1330","DOI":"10.12669\/pjms.36.6.1832","article-title":"The Controversy of Surgical Intervention for Anal Canal Duplication in Children","volume":"36","author":"Akova","year":"2020","journal-title":"Pak J Med Sci"},{"key":"2026012906401648000_19.1.e270621.6","article-title":"Anal canal duplication in an 11-year-old-child","volume":"2013","author":"Van Biervliet","year":"2013","journal-title":"Case Rep Gastrointest Med"},{"key":"2026012906401648000_19.1.e270621.7","doi-asserted-by":"crossref","first-page":"971","DOI":"10.1007\/s00383-019-04509-x","article-title":"Anal duplication: is surgery indicated? A report of three cases and review of the literature","volume":"35","author":"Trecartin","year":"2019","journal-title":"Pediatr Surg Int"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2025-270621","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T14:40:28Z","timestamp":1769697628000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2025-270621"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1]]},"references-count":7,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026,1,29]]},"published-print":{"date-parts":[[2026,1]]}},"alternative-id":["10.1136\/bcr-2025-270621"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2025-270621","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,1]]}}}