Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Patchy lingular opacity most likely represents atelectasis , although an early infectious process is not excluded in the appropriate clinical setting . No pleural effusion is seen . There is no evidence of pneumothorax . The cardiac silhouette is top normal . The mediastinal contours are unremarkable . No overt pulmonary edema is seen .
    OUTPUT:
    
Subtle lingular patchy opacity may be due to atelectasis , although an early infectious process is not excluded in the appropriate clinical setting .