{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T23:40:11Z","timestamp":1758843611496,"version":"3.44.0"},"reference-count":5,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2025,9,18]],"date-time":"2025-09-18T00:00:00Z","timestamp":1758153600000},"content-version":"vor","delay-in-days":17,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Respirology Case Reports"],"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Mediastinal teratomas demonstrating unidirectional pancreatic differentiation are exceedingly rare. We describe a 36\u2010year\u2010old woman with progressively worsening anterior chest pain. Computed tomography demonstrated a 5.9\u2009cm multilocular cystic mass in the anterior mediastinum, accompanied by pleural and pericardial effusions. Given the lesion's size and presumed inflammatory reaction, we performed radical excision via a hemiclamshell incision. Histopathology revealed predominantly pancreatic acinar tissue with scattered non\u2010pancreatic epithelial elements, prompting reclassification as a mediastinal teratoma rather than ectopic pancreas. Focal epithelial disruption was regarded as the nidus of the surrounding inflammation. The patient's postoperative course was uneventful. This report underscores the need to include teratoma in the differential diagnosis of anterior mediastinal lesions initially interpreted as ectopic pancreas and illustrates the value of the hemiclamshell approach for achieving complete, atraumatic resection when extensive local adhesions are present.<\/jats:p>","DOI":"10.1002\/rcr2.70345","type":"journal-article","created":{"date-parts":[[2025,9,18]],"date-time":"2025-09-18T11:05:58Z","timestamp":1758193558000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Hemiclamshell Resection of a Ruptured Mediastinal Teratoma Exhibiting Pancreatic Differentiation"],"prefix":"10.1002","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-7673-416X","authenticated-orcid":false,"given":"Yuri","family":"Enomoto","sequence":"first","affiliation":[{"name":"Department of Respiratory Medicine Sakai City Medical Center  Sakai Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshio","family":"Nakano","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine Sakai City Medical Center  Sakai Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroyuki","family":"Fukuda","sequence":"additional","affiliation":[{"name":"Department of Thoracic Surgery Sakai City Medical Center  Sakai Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoko","family":"Yamamoto","sequence":"additional","affiliation":[{"name":"Department of Thoracic Surgery Sakai City Medical Center  Sakai Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naoki","family":"Ikeda","sequence":"additional","affiliation":[{"name":"Department of Thoracic Surgery Sakai City Medical Center  Sakai Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yumiko","family":"Yasuhara","sequence":"additional","affiliation":[{"name":"Department of Pathology Sakai City Medical Center  Sakai Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Iwao","family":"Gohma","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine Sakai City Medical Center  Sakai Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,9,18]]},"reference":[{"issue":"4","key":"e_1_2_9_2_1","first-page":"249","article-title":"Mediastinal Sequestration With Ectopic Pancreatic Tissue","volume":"45","author":"Schweinitz D.","year":"1990","journal-title":"Zeitschrift f\u00fcr Kinderchirurgie"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.prp.2009.06.009"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.3892\/mco.2019.1878"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/rcr2.815"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.21037\/med\u201023\u201036"}],"container-title":["Respirology Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/rcr2.70345","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T23:09:49Z","timestamp":1758841789000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/rcr2.70345"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9]]},"references-count":5,"journal-issue":{"issue":"9","published-print":{"date-parts":[[2025,9]]}},"alternative-id":["10.1002\/rcr2.70345"],"URL":"https:\/\/doi.org\/10.1002\/rcr2.70345","archive":["Portico"],"relation":{},"ISSN":["2051-3380","2051-3380"],"issn-type":[{"type":"print","value":"2051-3380"},{"type":"electronic","value":"2051-3380"}],"subject":[],"published":{"date-parts":[[2025,9]]},"assertion":[{"value":"2025-06-17","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-09-06","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-09-18","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70345"}}