School ager with cough and fever Pediatric Imaging Chest July 6, 2026April 22, 2026 CXR PA (left) shows a faint opacity in the left lower lung that is obscuring the left hemidiaphragm (silhouette sign) and this opacity is seen just anterior to the lower spine on the lateral radiograph (right). The diagnosis was bacterial pneumonia in the left lower lobe. Related Published July 6, 2026April 22, 2026