Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . There is patchy left base opacity which could relate to atelectasis , although underlying infection is not excluded in the appropriate clinical setting . No large pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . There is no overt pulmonary edema .
    OUTPUT:
    
Subtle left base opacity may be due to atelectasis , although underlying infection is not excluded in the appropriate clinical setting . Consider dedicated PA and lateral views if patient able .