Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Slight increase in opacity at the right lung base most likely relates to atelectasis , although an underlying early consolidation can not be excluded in the appropriate clinical setting . The left lung demonstrates mild retrocardiac atelectasis . No pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are unremarkable . No overt pulmonary edema is seen .
    OUTPUT:
    
Slight increase in right base opacity may relate to atelectasis , although an early consolidation can not be excluded in the appropriate clinical setting .