{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,31]],"date-time":"2025-08-31T10:03:32Z","timestamp":1756634612725,"version":"3.40.4"},"reference-count":4,"publisher":"S. Karger AG","issue":"1","license":[{"start":{"date-parts":[[2025,3,5]],"date-time":"2025-03-05T00:00:00Z","timestamp":1741132800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2025,3,5]],"date-time":"2025-03-05T00:00:00Z","timestamp":1741132800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Case Rep Gastroenterol"],"abstract":"<jats:p>Introduction: We present the case of a patient with Crohn\u2019s disease who experienced recurrent pneumothorax after starting treatment with ustekinumab. Case Presentation: A patient with Crohn\u2019s disease started an induction regimen with intravenous ustekinumab, and 2 months later he presented a left-sided pneumothorax. It had an atypical evolution that required surgical management. The medication was withdrawn and the pneumothorax resolved completely. One year later, he had a new flare-up of Crohn\u2019s disease and ustekinumab therapy was restarted, presenting a new episode of pneumothorax. Conclusion: To our knowledge, this is the first report of recurrent pneumothorax following two separate attempts to initiate ustekinumab. <\/jats:p>","DOI":"10.1159\/000543991","type":"journal-article","created":{"date-parts":[[2025,3,5]],"date-time":"2025-03-05T17:01:03Z","timestamp":1741194063000},"page":"134-139","source":"Crossref","is-referenced-by-count":1,"title":["Recurrent Pneumothorax in a Pediatric Patient with Crohn\u2019s Disease Receiving Ustekinumab Treatment: Case Report"],"prefix":"10.1159","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-7364-3206","authenticated-orcid":false,"given":"Marta","family":"Freixas Bermejo","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luis","family":"Riera Soler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura","family":"Garc\u00eda Mart\u00ednez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oscar","family":"Segarra Cant\u00f3n","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2025,3,5]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.4161\/mabs.3.6.17815"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.14309\/ajg.0000000000002047"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1093\/ecco-jcc\/jjz110"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1186\/s13244-024-01742-4"}],"container-title":["Case Reports in Gastroenterology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/crg\/article-pdf\/19\/1\/134\/4346796\/000543991.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/karger.com\/crg\/article-pdf\/19\/1\/134\/4346796\/000543991.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T15:15:10Z","timestamp":1745421310000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000543991"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,3,5]]},"references-count":4,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2025,1,1]]}},"URL":"https:\/\/doi.org\/10.1159\/000543991","archive":["Portico"],"relation":{},"ISSN":["1662-0631"],"issn-type":[{"type":"electronic","value":"1662-0631"}],"subject":[],"published":{"date-parts":[[2025,3,5]]}}}