Nitrogen single and multiple breath washout test and lung imaging to detect treatment-related pulmonary toxicity in paediatric cancer patients and survivors: a systematic review
Abstract
Background Spirometry-based assessment of pulmonary function has limitations in detecting pulmonary toxicity following cancer treatment with chemotherapy, haematopoietic stem cell transplantation, radiotherapy or thoracic surgery. Nitrogen single and multiple breath washout tests are sensitive in assessing peripheral airway function, and lung imaging detects structural abnormalities, but little is known about their use in paediatric cancer patients and survivors. We aimed to 1) identify studies using nitrogen single or multiple breath washout tests and/or lung imaging to assess pulmonary toxicity in paediatric cancer patients and survivors, and 2) describe reported abnormalities. Method We systematically searched MEDLINE, Embase and the Cochrane Library for studies published in 1995‒2023. Eligible studies included paediatric cancer patients and survivors under 22 years of age receiving haematopoietic stem cell transplantation, chemotherapy, radiotherapy and/or thoracic surgery who underwent nitrogen single or multiple breath washout tests or lung imaging for detecting pulmonary toxicity. Two independent reviewers identified the studies, performed data extraction and assessed risk of bias. Results We included 12 of 6544 publications. Three studies used nitrogen single or multiple breath washout tests, seven conducted lung imaging using computed tomography and two used both nitrogen single or multiple breath washout tests and lung imaging. Abnormal test results for nitrogen…
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