{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T10:06:44Z","timestamp":1790330804582,"version":"4.1.0"},"reference-count":42,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T00:00:00Z","timestamp":1790294400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Med."],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Thoracic and mediastinal conditions affecting the esophagus, diaphragm, mediastinum, and airway carry considerable morbidity when diagnosis is delayed. Young adults are often perceived as low risk for serious thoracic disease, and low clinical suspicion, atypical symptoms, and cognitive and healthcare-system barriers can delay recognition.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This focused narrative review searched PubMed and Scopus, supplemented by Google Scholar, for studies published between January 2000 and May 2026, with selected earlier landmark studies retained where essential. Search terms included \u201cthoracic surgical conditions,\u201d \u201cyoung adults,\u201d \u201clate diagnosis,\u201d \u201cmisdiagnosis,\u201d and \u201cunusual presentation.\u201d Five conditions were selected purposively to illustrate contrasting mechanisms and time-courses of diagnostic delay rather than to catalogue thoracic disease exhaustively. No formal systematic search protocol, study-level quality appraisal, or narrative-review quality instrument was applied.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Five diagnostic categories are examined: esophageal perforation and Boerhaave syndrome, traumatic diaphragmatic injury, primary mediastinal germ cell tumors, airway tumors misdiagnosed as asthma, and Hodgkin lymphoma presenting as an anterior mediastinal mass. Hodgkin lymphoma is included as a mediastinal diagnostic pitfall because it resembles other anterior mediastinal tumors and requires histological sampling for definitive diagnosis. Together, these conditions illustrate how overlapping cognitive and systemic barriers contribute to diagnostic delay. The strength and age relevance of the supporting evidence differ markedly between conditions and are stated explicitly, as much of the foundational literature derives from broader adult populations rather than cohorts restricted to ages 18\u201340.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Diagnostic delay reflects the combined effects of non-specific presentation, anchoring, premature closure, limited access to imaging, and delayed specialist referral. Consequences differ by condition: in acute mechanical and perforation emergencies, delays measured in hours may affect contamination, deterioration, and operative complexity, whereas in indolent mediastinal malignancies delay principally affects diagnostic complexity, symptom and psychological burden, and time to staging and treatment, while prognosis remains strongly influenced by histological subtype and tumor biology. Structured reassessment after an unexpected treatment response, timely cross-sectional imaging, disease-specific testing, and early specialist referral are practical measures available to first-contact clinicians.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fmed.2026.1964531","type":"journal-article","created":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T09:40:15Z","timestamp":1790329215000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Delayed diagnosis of selected thoracic and mediastinal conditions in young adults: a focused narrative review of clinical pitfalls, cognitive biases, and system barriers"],"prefix":"10.3389","volume":"13","author":[{"given":"Ramzi","family":"Hazboun","sequence":"first","affiliation":[{"name":"Al-Quds University Faculty of Medicine","place":["Abu Dis, Palestine"]},{"name":"Al Quds Medical Research Association","place":["Jerusalem, 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