{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T11:47:08Z","timestamp":1791632828452,"version":"4.3.4"},"reference-count":10,"publisher":"BMJ","issue":"1","license":[{"start":{"date-parts":[[2025,1,30]],"date-time":"2025-01-30T00:00:00Z","timestamp":1738195200000},"content-version":"unspecified","delay-in-days":29,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2024,12,23]]},"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:p>Subdermal contraceptive implants are now commonly used throughout the world. One of the rare complications of these implants is migration to the lungs due to misplacement of the implant during insertion, with only a limited number of cases documented. Here, we present a case where a subdermal contraceptive implant embolised in the subsegmental branch of the pulmonary artery within the anterobasal segment of the left lower lobe. Due to incorrect placement, the subdermal implant migrated from subcutaneous plane into one of the upper extremity veins. It then travelled the venous pathway to the heart, passed through the right atrium and ventricle, transferred into the left pulmonary artery and eventually embolised into the anterobasal segmental branch. Treatment options for such cases include endovascular retrieval, mini-thoracotomy (open thoracic surgery, video-assisted thoracoscopic wedge or segmental resection) or conservative management.<\/jats:p>","DOI":"10.1136\/bcr-2024-262771","type":"journal-article","created":{"date-parts":[[2025,1,30]],"date-time":"2025-01-30T11:15:12Z","timestamp":1738235712000},"page":"e262771","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Subdermal contraceptive implant migration to pulmonary artery branch"],"prefix":"10.1136","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-6448-095X","authenticated-orcid":false,"given":"Tooba","family":"Kareem","sequence":"first","affiliation":[{"name":"Radiology, University Hospitals of North Midlands NHS Trust, Stoke-on-Trent, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Frain","sequence":"additional","affiliation":[{"name":"Radiology, University Hospitals of North Midlands NHS Trust, Stoke-on-Trent, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samavia","family":"Raza","sequence":"additional","affiliation":[{"name":"Radiology, University Hospitals of North Midlands NHS Trust, Stoke-on-Trent, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicholas Alexander","family":"Watson","sequence":"additional","affiliation":[{"name":"Radiology, University Hospitals of North Midlands NHS Trust, Stoke-on-Trent, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2025,1,30]]},"reference":[{"key":"2025082722451536000_18.1.e262771.1","doi-asserted-by":"crossref","first-page":"314","DOI":"10.5468\/ogs.2017.60.3.314","article-title":"Migration of a contraceptive subdermal device into the lung","volume":"60","author":"Choi","year":"2017","journal-title":"Obstet Gynecol Sci"},{"key":"2025082722451536000_18.1.e262771.2","unstructured":"Medicines and Healthcare products Regulatory Agency. GOV.UK . Implanon contraceptive implant: changing to nexplanon. 2014. Available: https:\/\/www.gov.uk\/drug-safety-update\/implanon-contraceptive-implant-changing-to-nexplanon [Accessed 5 Jun 2024]."},{"key":"2025082722451536000_18.1.e262771.3","unstructured":"EMC . Nexplanon 68 mg implant for subdermal use - summary of product characteristics (smpc). 2023. Available: https:\/\/www.medicines.org.uk\/emc\/product\/5720\/smpc#gref [Accessed 5 Jun 2024]."},{"key":"2025082722451536000_18.1.e262771.4","doi-asserted-by":"crossref","DOI":"10.1186\/s13256-024-04547-7","article-title":"Nexplanonectomy-the surgical removal of an embolized implanted contraceptive device: a case report and review of the literature","volume":"18","author":"Maybury","year":"2024","journal-title":"J Med Case Rep"},{"key":"2025082722451536000_18.1.e262771.5","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1055\/s-0038-1636517","article-title":"Contraceptive Implant Migration and Removal by Interventional Radiology","volume":"35","author":"Zhang","year":"2018","journal-title":"Semin Intervent Radiol"},{"key":"2025082722451536000_18.1.e262771.6","article-title":"Migration of a Contraceptive Subdermal Device Into the Lung","volume":"15","author":"Enabi","year":"2023","journal-title":"Cureus"},{"key":"2025082722451536000_18.1.e262771.7","doi-asserted-by":"crossref","DOI":"10.1097\/MD.0000000000018881","article-title":"Nexplanon migration into a subsegmental branch of the pulmonary artery: A case report and review of the literature","volume":"99","author":"Hindy","year":"2020","journal-title":"Medicine (Baltimore)"},{"key":"2025082722451536000_18.1.e262771.8","unstructured":"Medicines and Healthcare products Regulatory Agency. GOV.UK . Nexplanon (etonogestrel) contraceptive implants: new insertion site to reduce rare risk of neurovascular injury and implant migration. 2020. Available: https:\/\/www.gov.uk\/drug-safety-update\/nexplanon-etonogestrel-contraceptive-implants-new-insertion-site-to-reduce-rare-risk-of-neurovascular-injury-and-implant-migration#:~:text=Updated%20advice%20for%20insertion%20of%20the%20implant,-Following%20continued%20receipt&text=The%20recommended%20site%20for%20insertion,the%20biceps%20and%20triceps%20muscles [Accessed 5 Jun 2024]."},{"key":"2025082722451536000_18.1.e262771.9","doi-asserted-by":"crossref","unstructured":"Wali A , Bilkhu R , Rizzo V , et al . Contraceptive implant migration to the lung. BJR Case Rep 2021;7. doi:10.1259\/bjrcr.20200216","DOI":"10.1259\/bjrcr.20200216"},{"key":"2025082722451536000_18.1.e262771.10","unstructured":"NHS . How the contraceptive implant is fitted or removed. 2024. Available: https:\/\/www.nhs.uk\/contraception\/methods-of-contraception\/contraceptive-implant\/getting-it-fitted-or-removed\/#:~:text=You\u2019ll%20need%20to%20use,less%20effective%20at%20preventing%20pregnancy [Accessed 5 Jun 2024]."}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2024-262771","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T05:45:27Z","timestamp":1756359927000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2024-262771"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,1]]},"references-count":10,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2025,1,30]]},"published-print":{"date-parts":[[2025,1]]}},"alternative-id":["10.1136\/bcr-2024-262771"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2024-262771","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,1]]}}}