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The patient presented 6\u2009weeks after a double embryo transfer with acute onset abdominal pain and was diagnosed with a suspected live tubal ectopic pregnancy with a viable intrauterine pregnancy on ultrasound. A diagnostic laparoscopy revealed an ectopic pregnancy implanted on the left USL which was resected and confirmed on histology. The patient was discharged well on postoperative day 2 with a viable intrauterine pregnancy. This case highlights the importance of considering non-tubal heterotopic pregnancies in the context of risk factors including IVF with double embryo transfer presenting with abdominal pain.<\/jats:p>","DOI":"10.1136\/bcr-2021-246649","type":"journal-article","created":{"date-parts":[[2022,2,7]],"date-time":"2022-02-07T11:39:23Z","timestamp":1644233963000},"page":"e246649","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Abdominal heterotopic pregnancy post-IVF double embryo transfer"],"prefix":"10.1136","volume":"15","author":[{"given":"Chee Wai","family":"Ku","sequence":"first","affiliation":[{"name":"Department of Reproductive Medicine, KK Women's and Children's Hospital, Singapore"},{"name":"Duke-NUS Medical School, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3014-5193","authenticated-orcid":false,"given":"Isabella","family":"Ong","sequence":"additional","affiliation":[{"name":"Yong Loo Lin School of Medicine, National University of Singapore, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jerry Kok Yen","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Reproductive Medicine, KK Women's and Children's Hospital, Singapore"},{"name":"Duke-NUS Medical School, Singapore"},{"name":"Yong Loo Lin School of Medicine, National University of Singapore, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tat Xin","family":"Ee","sequence":"additional","affiliation":[{"name":"Department of Reproductive Medicine, KK Women's and Children's Hospital, Singapore"},{"name":"Duke-NUS Medical School, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2022,2,7]]},"reference":[{"key":"2025082704031693000_15.2.e246649.1","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1007\/s00404-006-0150-2","article-title":"Heterotopic pregnancy: a rare cause of hemoperitoneum and the acute abdomen","volume":"274","author":"Schroeppel","year":"2006","journal-title":"Arch Gynecol Obstet"},{"key":"2025082704031693000_15.2.e246649.2","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1002\/uog.12341","article-title":"Value of transvaginal sonography in diagnosing heterotopic pregnancy after in-vitro fertilization with embryo transfer","volume":"41","author":"Li","year":"2013","journal-title":"Ultrasound Obstet Gynecol"},{"key":"2025082704031693000_15.2.e246649.3","doi-asserted-by":"crossref","first-page":"1437.e13","DOI":"10.1016\/j.fertnstert.2006.12.083","article-title":"Heterotopic abdominal pregnancy following two-blastocyst embryo transfer","volume":"88","author":"Knopman","year":"2007","journal-title":"Fertil Steril"},{"key":"2025082704031693000_15.2.e246649.4","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000196503.78126.62"},{"key":"2025082704031693000_15.2.e246649.5","doi-asserted-by":"publisher","DOI":"10.1093\/humupd\/3.4.367"},{"key":"2025082704031693000_15.2.e246649.6","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0015-0282(16)58378-2","article-title":"Heterotopic pregnancy after ovulation induction and assisted reproductive technologies: a literature review from 1971 to 1993","volume":"66","author":"Tal","year":"1996","journal-title":"Fertil Steril"},{"key":"2025082704031693000_15.2.e246649.7","doi-asserted-by":"publisher","DOI":"10.1016\/j.fertnstert.2015.04.009"},{"key":"2025082704031693000_15.2.e246649.8","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1186\/s12958-016-0201-x","article-title":"Abdominal ectopic pregnancy after in vitro fertilization and single embryo transfer: a case report and systematic review","volume":"14","author":"Yoder","year":"2016","journal-title":"Reprod Biol Endocrinol"},{"key":"2025082704031693000_15.2.e246649.9","article-title":"Heterotopic Pregnancy - A Diagnostic Challenge. 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