{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,19]],"date-time":"2025-12-19T04:52:26Z","timestamp":1766119946594,"version":"3.48.0"},"reference-count":13,"publisher":"BMJ","issue":"12","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2025,12,1]]},"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:p>The subspecialty of interventional bronchoscopy has grown exponentially in recent times, and airway stenting is a frequently performed procedure. It is a therapeutic bronchoscopic intervention for both benign and malignant conditions, being mostly performed with a palliative intent, especially in cases of malignant central airway obstruction (CAO).<\/jats:p>\n                  <jats:p>We report a previously undocumented complication of airway stenting\u2014disintegration of a self-expanding metallic stent (SEMS) and its spontaneous expectoration. A man in his late 40s with newly diagnosed squamous cell carcinoma of the lung presented with CAO and respiratory failure. Rigid bronchoscopy with tumour debulking and Y-SEMS placement was performed, resulting in clinical stabilisation. Four-and-a-half months post-stenting, the patient presented with expectoration of metallic fragments. Bronchoscopy revealed extensive disintegration of the posterior wall of the tracheal limb of the stent, with the bronchial limbs intact. The disintegrated stent was carefully removed under rigid bronchoscopy without any complications. Given adequate airway patency, no replacement stent was inserted. The patient continued systemic chemotherapy and remained stable, with no recurrence of airway compromise. This case highlights an unusual delayed complication of airway stenting.<\/jats:p>","DOI":"10.1136\/bcr-2025-268707","type":"journal-article","created":{"date-parts":[[2025,12,19]],"date-time":"2025-12-19T04:05:33Z","timestamp":1766117133000},"page":"e268707","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["<i>Metalloptysis<\/i>\n                    : spontaneous expectoration of stent fragments from a disintegrated self-expanding metallic airway Y-stent"],"prefix":"10.1136","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0283-6034","authenticated-orcid":false,"given":"Krishnapriya S","family":"Kumar","sequence":"first","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7241-7428","authenticated-orcid":false,"given":"Prakash","family":"Sivaramakrishnan","sequence":"additional","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Girish","family":"Sindhwani","sequence":"additional","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7982-6267","authenticated-orcid":false,"given":"Mayank","family":"Mishra","sequence":"additional","affiliation":[{"name":"Pulmonary Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2025,12,18]]},"reference":[{"key":"2025121820052399000_18.12.e268707.1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chest.2016.02.001"},{"key":"2025121820052399000_18.12.e268707.2","article-title":"Malignant Airway Obstruction and Endobronchial Stent Placement: A Systematic Review on the Efficacy and Safety","volume":"15","author":"Umar","year":"2023","journal-title":"Cureus"},{"key":"2025121820052399000_18.12.e268707.3","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccm.2009.08.002"},{"key":"2025121820052399000_18.12.e268707.4","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1007\/s13665-012-0036-7","article-title":"Metallic stents in the airway: should we continue to use them and can we remove them?","volume":"2","author":"Sosa","year":"2013","journal-title":"Curr Respir Care Rep"},{"key":"2025121820052399000_18.12.e268707.5","doi-asserted-by":"crossref","unstructured":"Innabi A , Mcclelland S , Raman T , et al . \u2018No Stent Left Behind\u2019: A Review of Stent Removal and Related Complications. EMJ Respir 2017;78\u201384. doi:10.33590\/emjrespir\/10314389","DOI":"10.33590\/emjrespir\/10314389"},{"key":"2025121820052399000_18.12.e268707.6","doi-asserted-by":"publisher","DOI":"10.1177\/0218492311431347"},{"key":"2025121820052399000_18.12.e268707.7","first-page":"56","article-title":"Collapse of a new type of self-expanding metallic tracheal stent","volume":"65","author":"Trisolini","year":"2006","journal-title":"Monaldi Arch Chest Dis"},{"key":"2025121820052399000_18.12.e268707.8","article-title":"Tracheal penetration and tracheoesophageal fistula caused by an esophageal self-expanding metallic stent","volume":"2014","author":"Madan","year":"2014","journal-title":"Case Rep Pulmonol"},{"key":"2025121820052399000_18.12.e268707.9","doi-asserted-by":"publisher","DOI":"10.1016\/j.jtcvs.2008.05.039"},{"key":"2025121820052399000_18.12.e268707.10","doi-asserted-by":"crossref","first-page":"142","DOI":"10.1097\/00128594-199804000-00013","article-title":"Disintegration of a Dynamic Airway Stent","volume":"5","author":"Noppen","year":"1998","journal-title":"Journal of Bronchology"},{"key":"2025121820052399000_18.12.e268707.11","doi-asserted-by":"crossref","DOI":"10.1016\/S0012-3692(16)47618-X","article-title":"Disintegration of posterior wall of rusch y dynamic tracheal stent: a new complication","volume":"136","author":"Patel","year":"2009","journal-title":"Chest"},{"key":"2025121820052399000_18.12.e268707.12","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1111\/resp.14764","article-title":"World Association for Bronchology and Interventional Pulmonology (WABIP) guidelines on airway stenting for malignant central airway obstruction","volume":"29","author":"Chaddha","year":"2024","journal-title":"Respirology"},{"key":"2025121820052399000_18.12.e268707.13","doi-asserted-by":"crossref","first-page":"587","DOI":"10.1111\/resp.70068","article-title":"World Association for Bronchology and Interventional Pulmonology (WABIP) Guidelines on Airway Stenting for Benign Central Airway Obstruction","volume":"30","author":"Chaddha","year":"2025","journal-title":"Respirology"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2025-268707","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,19]],"date-time":"2025-12-19T04:05:36Z","timestamp":1766117136000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2025-268707"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12]]},"references-count":13,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2025,12,18]]},"published-print":{"date-parts":[[2025,12]]}},"alternative-id":["10.1136\/bcr-2025-268707"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2025-268707","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12]]}}}