{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T11:42:34Z","timestamp":1756381354607,"version":"3.44.0"},"reference-count":17,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"abstract":"<jats:p>Primary neoplasms of the respiratory tract are rarely encountered in the paediatric population. Inflammatory myofibroblastic tumour (IMT) is a rare soft tissue mesenchymal tumour but a distinct disease entity accounting for less than 1% of all primary lung tumours. We report a case of a 10-year-old boy who presented with respiratory failure and left lung collapse. On flexible fiberoptic bronchoscopy, a pedunculated mass in the lower part of the trachea originating from the left main stem bronchus was identified. The patient subsequently underwent a left-sided pneumonectomy with complete resection of the mass. The histopathological analysis was consistent with IMT. Two years of follow-up and the patient remains well.<\/jats:p>","DOI":"10.1136\/bcr-2013-201102","type":"journal-article","created":{"date-parts":[[2013,11,18]],"date-time":"2013-11-18T08:54:35Z","timestamp":1384764875000},"page":"bcr2013201102","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["A rare aetiology of respiratory failure in a 10-year-old boy: inflammatory myofibroblastic tumour"],"prefix":"10.1136","volume":"2013","author":[{"given":"Ali","family":"Khawaja","sequence":"first","affiliation":[{"name":"Medical College, The Aga Khan University Hospital, Karachi, Sindh, Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prem Kumar","family":"Maheshwari","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, The Aga Khan University Hospital, Karachi, Sindh, 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