{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T14:10:59Z","timestamp":1785161459581,"version":"3.55.0"},"reference-count":13,"publisher":"BMJ","issue":"7","license":[{"start":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T00:00:00Z","timestamp":1785110400000},"content-version":"unspecified","delay-in-days":26,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,6,26]]},"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:p>Congenital uterine anomalies occur as a result of a failure of the fusion and resorption of the M\u00fcllerian ducts in utero. Although M\u00fcllerian anomalies are relatively uncommon, they can complicate reproductive health and even cause death.<\/jats:p>\n                  <jats:p>We report a case of an asymptomatic Caucasian woman in her 30s who was misdiagnosed with a tubal ectopic pregnancy at 12\u2009weeks 0\u2009days during a routine dating scan, ultimately revealing a right-sided unicornuate uterus with a non-communicating rudimentary horn. The diagnosis of the M\u00fcllerian anomaly was made based on two-dimensional sonography and laparoscopy but was eventually confirmed with MRI. Due to the high risk of uterine rupture, intrauterine growth restriction and preterm birth, it was felt continuation of the pregnancy was not advisable. Thus, the woman underwent a laparotomy, during which a left hemi-hysterectomy of the rudimentary horn was performed and the pregnancy was terminated.<\/jats:p>","DOI":"10.1136\/bcr-2025-271003","type":"journal-article","created":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T13:20:32Z","timestamp":1785158432000},"page":"e271003","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Hidden horn: misdiagnosed ectopic pregnancy in a unicornuate uterus"],"prefix":"10.1136","volume":"19","author":[{"given":"Mahdhir","family":"Amat Tugiman","sequence":"first","affiliation":[{"name":"Obstetrics & Gynaecology, Rockhampton Hospital, Rockhampton, Queensland, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pankhuri","family":"Punj","sequence":"additional","affiliation":[{"name":"Obstetrics & Gynaecology, Rockhampton Hospital, Rockhampton, Queensland, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shavershree","family":"Govender","sequence":"additional","affiliation":[{"name":"Obstetrics & Gynaecology, Rockhampton Hospital, Rockhampton, Queensland, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,7,27]]},"reference":[{"key":"2026072706201848000_19.7.e271003.1","first-page":"144","article-title":"Successful Delivery after Uterine Rupture with Pervious Open Strassman Metroplasty for a Bicornuate Uterus in a Twin Pregnancy","volume":"46","author":"Tabatabaei","year":"2021","journal-title":"Iran J Med Sci"},{"key":"2026072706201848000_19.7.e271003.2","doi-asserted-by":"crossref","DOI":"10.1186\/1752-1947-8-130","article-title":"Pregnancy in a unicornuate uterus: a case report","volume":"8","author":"Caserta","year":"2014","journal-title":"J Med Case Rep"},{"key":"2026072706201848000_19.7.e271003.3","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1002\/jcu.22393","article-title":"Diagnosis and laparoscopic management of a rudimentary horn pregnancy: Role of three-dimensional ultrasound","volume":"45","author":"Blancafort","year":"2017","journal-title":"J Clin Ultrasound"},{"key":"2026072706201848000_19.7.e271003.4","doi-asserted-by":"publisher","DOI":"10.1016\/S0015-0282(97)81506-3"},{"key":"2026072706201848000_19.7.e271003.5","doi-asserted-by":"publisher","DOI":"10.1093\/humupd\/dmr021"},{"key":"2026072706201848000_19.7.e271003.6","doi-asserted-by":"publisher","DOI":"10.1093\/oxfordjournals.humrep.a019588"},{"key":"2026072706201848000_19.7.e271003.7","doi-asserted-by":"crossref","first-page":"219","DOI":"10.7863\/jum.2005.24.2.219","article-title":"Rudimentary horn pregnancy: first-trimester prerupture sonographic diagnosis and confirmation by magnetic resonance imaging","volume":"24","author":"Tsafrir","year":"2005","journal-title":"J Ultrasound Med"},{"key":"2026072706201848000_19.7.e271003.8","first-page":"151","article-title":"Rudimentary uterine horn pregnancy. The 20th-century worldwide experience of 588 cases","volume":"47","author":"Nahum","year":"2002","journal-title":"J Reprod Med"},{"key":"2026072706201848000_19.7.e271003.9","doi-asserted-by":"crossref","first-page":"706","DOI":"10.1111\/j.1471-0528.2004.00162.x","article-title":"Preventing ectopic pregnancies: how often does transperitoneal transmigration of sperm occur in effecting human pregnancy?","volume":"111","author":"Nahum","year":"2004","journal-title":"BJOG"},{"key":"2026072706201848000_19.7.e271003.10","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1089\/154099904322836438","article-title":"Reproductive Outcomes in Women with Uterine Anomalies","volume":"13","author":"Lin","year":"2004","journal-title":"J Womens Health"},{"key":"2026072706201848000_19.7.e271003.11","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/det098"},{"key":"2026072706201848000_19.7.e271003.12","doi-asserted-by":"publisher","DOI":"10.1002\/uog.5131"},{"key":"2026072706201848000_19.7.e271003.13","doi-asserted-by":"publisher","DOI":"10.1016\/S0015-0282(16)44114-2"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2025-271003","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T13:20:33Z","timestamp":1785158433000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2025-271003"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7]]},"references-count":13,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2026,7,27]]},"published-print":{"date-parts":[[2026,7]]}},"alternative-id":["10.1136\/bcr-2025-271003"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2025-271003","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7]]}}}