Lung Ultrasound as First-Line Examination for the Diagnosis of Community-Acquired Pneumonia in Children.

Objectives: The diagnosis of pediatric community-acquired pneumonia (CAP) is based on clinical criteria. Even though chest x-ray (CXR) is only recommended in severe cases, it is often requested from physicians in mild cases, thus increasing radiation exposure. Lung ultrasound (LUS) is not included in the diagnostic workup.