Diagnostic Accuracy of Pocket-size Lung Ultrasound in Pneumonia Etiology and Complications in Hospitalized Children

The investigators will study the diagnostic accuracy of a pocket-size POCUS device vs. CXR for the etiological diagnosis of CAP, in paediatric age. During 1 year, all children aged \>12 months and \<18 years admitted to the Paediatric Department with the diagnosis of CAP on admission will be included. At least 76 participants will be required. Two investigators will perform, independently, a POCUS at admission, daily during hospitalization, 15 days and 1 month after discharge. All children will also undergo a CXR upon admission and whenever necessary. A third investigator will classify the CXR independently. It will be used the General Electrics Vscan AirTM®, with Bluetooth connection to smartphone/tablet. It will be collected the systematized description of POCUS and CXR, sociodemographic, clinical and therapeutic variables.