{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T00:05:21Z","timestamp":1756339521023,"version":"3.44.0"},"reference-count":11,"publisher":"BMJ","issue":"11","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2024,10,24]]},"published-print":{"date-parts":[[2024,11]]},"abstract":"<jats:p>We report a case of a dichorionic diamniotic twin pregnancy where twin B was diagnosed with a large multi-loculated exophytic cystic neck mass arising from the right side with involvement of the right proximal upper limb and significant mass effect on the trachea diagnosed during antenatal MRI. After multidisciplinary discussion, an ex utero intrapartum treatment (EXIT) procedure was planned given concerns about airway obstruction in twin B. Successful EXIT was performed with the delivery of twin A first, followed by an intraoperative external cephalic version of twin B and subsequent delivery of the fetal head and intubation on maternal circulation.<\/jats:p>","DOI":"10.1136\/bcr-2023-259339","type":"journal-article","created":{"date-parts":[[2024,11,13]],"date-time":"2024-11-13T21:50:20Z","timestamp":1731534620000},"page":"e259339","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Ex utero intrapartum treatment (EXIT) procedure for the second twin with neck mass in a twin pregnancy with vertex\/breech presentation"],"prefix":"10.1136","volume":"17","author":[{"given":"Ilka","family":"Tan","sequence":"first","affiliation":[{"name":"Maternal Fetal Medicine, KK Women's and Children's Hospital, Singapore, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anju","family":"Bhatia","sequence":"additional","affiliation":[{"name":"Maternal Fetal Medicine, KK Women's and Children's Hospital, Singapore, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"June Vic Khi","family":"Tan","sequence":"additional","affiliation":[{"name":"Maternal Fetal Medicine, KK Women's and Children's Hospital, Singapore, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2024,11,13]]},"reference":[{"key":"2025082708305897000_17.11.e259339.1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3468(96)90824-6"},{"key":"2025082708305897000_17.11.e259339.2","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1053\/j.sempedsurg.2012.10.008","article-title":"Ex Utero Intrapartum Therapy","volume":"22","author":"Moldenhauer","year":"2013","journal-title":"Semin Pediatr Surg"},{"key":"2025082708305897000_17.11.e259339.3","doi-asserted-by":"publisher","DOI":"10.1016\/S1055-8586(03)00026-X"},{"key":"2025082708305897000_17.11.e259339.4","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1055\/s-2001-18693","article-title":"EXIT procedure in a twin gestation and review of the literature","volume":"18","author":"Midrio","year":"2001","journal-title":"Am J Perinatol"},{"key":"2025082708305897000_17.11.e259339.5","first-page":"824","article-title":"The ex utero intrapartum treatment procedure for a large fetal neck mass in a twin gestation","volume":"93","author":"Liechty","year":"1999","journal-title":"Obstet Gynecol"},{"key":"2025082708305897000_17.11.e259339.6","doi-asserted-by":"crossref","DOI":"10.3389\/fsurg.2020.598121","article-title":"EXIT (ex utero Intrapartum Treatment) to Airway Procedure for Twin Fetuses With Oropharyngeal Teratomas: Lessons Learned","volume":"7","author":"King","year":"2020","journal-title":"Front Surg"},{"key":"2025082708305897000_17.11.e259339.7","doi-asserted-by":"crossref","first-page":"439","DOI":"10.1016\/j.ijporl.2012.11.023","article-title":"Ex utero intrapartum treatment procedure for management of congenital high airway obstruction syndrome in a vertex\/breech twin gestation","volume":"77","author":"Elliott","year":"2013","journal-title":"Int J Pediatr Otorhinolaryngol"},{"key":"2025082708305897000_17.11.e259339.8","doi-asserted-by":"crossref","DOI":"10.1186\/1471-2393-14-252","article-title":"EXIT procedure in twin pregnancy: a series of three cases from a single center","volume":"14","author":"Garc\u00eda-D\u00edaz","year":"2014","journal-title":"BMC Pregnancy Childbirth"},{"key":"2025082708305897000_17.11.e259339.9","doi-asserted-by":"publisher","DOI":"10.1053\/j.sempedsurg.2014.07.002"},{"key":"2025082708305897000_17.11.e259339.10","doi-asserted-by":"crossref","first-page":"587","DOI":"10.1097\/MPH.0000000000000260","article-title":"Genetics of hemangiomas, vascular malformations, and primary lymphedema","volume":"36","author":"Blatt","year":"2014","journal-title":"J Pediatr Hematol Oncol"},{"key":"2025082708305897000_17.11.e259339.11","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2014-3673"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2023-259339","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T15:31:10Z","timestamp":1756308670000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2023-259339"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,11]]},"references-count":11,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2024,11,13]]},"published-print":{"date-parts":[[2024,11]]}},"alternative-id":["10.1136\/bcr-2023-259339"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2023-259339","relation":{},"ISSN":["1757-790X"],"issn-type":[{"type":"electronic","value":"1757-790X"}],"subject":[],"published":{"date-parts":[[2024,11]]}}}