Toddler with fever and cough

CXR of pediatric viral pneumonia with subsegmental atelectasis
CXR AP (left) and lateral (right) shows thickened central airways and bilateral lung hyperexpansion causing flattening of the diaphragm. There is an opacity in the medial aspect of the right middle lobe causing the right heart border to be obscured (silhouette sign).

The diagnosis was viral pneumonia with subsegmental atelectasis in the medial aspect of the right middle lobe.