{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T07:40:02Z","timestamp":1756280402663,"version":"3.44.0"},"reference-count":23,"publisher":"BMJ","issue":"2","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2025,1,23]]},"published-print":{"date-parts":[[2025,2]]},"abstract":"<jats:p>Pulmonary sequestration (PS) is a rare congenital pulmonary anomaly with defining features of a mass of non-functioning pulmonary tissue that does not communicate with the tracheobronchial tree and with systemic blood supply usually directly from the aorta. Owing to its rarity which occurs in approximately 1 in 10\u2009000 to 35\u2009000 live births, as well as its variable symptomology and preponderance in paediatric population, PS is often misdiagnosed or missed with treatment delayed. This case report details a woman in her 20s who presented with haemoptysis and chest tightness. Subsequent imaging revealed a mass-like lesion in the right lower lobe which led to the diagnosis of PS. This case report highlights a rare manifestation of PS with the need for lateral thinking to avoid misdiagnosis and the value of a multidisciplinary approach in managing the condition to prevent adverse outcomes or complications from delayed treatment such as life-threatening haemoptysis and recurrent pneumonia.<\/jats:p>","DOI":"10.1136\/bcr-2024-262529","type":"journal-article","created":{"date-parts":[[2025,2,8]],"date-time":"2025-02-08T09:45:25Z","timestamp":1739007925000},"page":"e262529","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Pulmonary sequestration causing haemoptysis in an adult"],"prefix":"10.1136","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2781-3592","authenticated-orcid":false,"given":"Tanya","family":"Gupta","sequence":"first","affiliation":[{"name":"General medicine, County Durham and Darlington NHS Foundation Trust, Durham, 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