Respiratory panel (multiplex PCR) came positive for human adenovirus. Other laboratory investigations show high CRP (C-reactive protein) with normal WBC count.

Chest ultrasound can be used to access the size of pleural effusion and differentiate between the lung consolidation and atelectasis. Dynamic air bronchogram aids in the differentiation of consolidation from the atelectasis. Dynamic air bronchograms are more in favour of pneumonia whereas static or no air bronchograms are more in favour of atelectasis. Size of pleural effusion is also a helpful feature. Large pleural effusion raises the possibility of underlying compression atelectasis whereas a small effusion is more in favour of consolidation ¹.