Gregorio-Hernandez, RebecaPerez-Perez, AlbaAlonso-Ojembarrena, AlmudenaArriaga-Redondo, MariaRamos-Navarro, CristinaSanchez-Luna, Manuel2025-01-072025-01-072021-11-290340-6199https://hdl.handle.net/10668/25181Neonatal pneumothorax (NP) is a potentially life-threatening condition. Lung ultrasound (LUS) has shown higher sensitivity and specificity in diagnosis compared to x-rays, but evidence regarding its usefulness in complex NP is lacking. We report four neonates suffering from cardiac or esophageal malformations who developed lateral and/or posterior pneumothoraces, in which LUS helped, making NP diagnosis and management easier and faster.Conclusion: LUS is an easy-to-use, fast, simple, and accurate tool when evaluating newborns with NP, also in atypical positions such as in surgical patients.What is Known:Lung ultrasound (LUS) has higher sensitivity and specificity than x-rays in the diagnosis of pneumothorax in neonatal patients.What is New:This is the first report about neonatal pneumothorax in non-conventional areas (lateral/posterior) diagnosed by lung ultrasound and how obtaining this information is critical in order to optimize management.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/PneumothoraxLung ultrasoundNeonatesUltrasound-guided procedureCase reportPointresearch article34845527open access10.1007/s00431-021-04329-z1432-1076https://www.researchsquare.com/article/rs-949219/latest.pdf723499600001