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We report a case of a late adolescence male presenting with chronic respiratory symptoms initially misdiagnosed as asthma, later confirmed to have WCS following detailed evaluation. This case highlights the importance of considering WCS in the differential diagnosis of unexplained bronchiectasis and emphasises the role of advanced imaging techniques in its diagnosis.<\/jats:p>","DOI":"10.1136\/bcr-2024-263112","type":"journal-article","created":{"date-parts":[[2025,4,15]],"date-time":"2025-04-15T16:25:27Z","timestamp":1744734327000},"page":"e263112","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Williams-Campbell syndrome: a rare congenital bronchiectasis"],"prefix":"10.1136","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8628-6809","authenticated-orcid":false,"given":"Pooja","family":"Khosla","sequence":"first","affiliation":[{"name":"Department of internal medicine, Sir gangaram hospital, New delhi, Delhi, 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