Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . On the lateral view , there appears to be slight increase in opacity projecting over the posterior lower lung , just superior to the level of the posterior left hemidiaphragm without clear correlate on the frontal view . Findings may be due to atelectasis , however early / developing infectious process is not excluded . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable and unremarkable . There is no pulmonary edema .
    OUTPUT:
    
On the lateral view , there appears to be slight increase in opacity projecting over the posterior lower lung , just superior to the level of the posterior left hemidiaphragm without clear correlate on the frontal view . Findings may be due to atelectasis , however early / developing infectious process is not excluded