Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . There are increased opacifications at the right lung base . No pleural effusion , pneumothorax , or pulmonary edema is seen . The heart remains moderately enlarged . Mediastinal contours are within normal limits .
    OUTPUT:
    
Increased right lung base opacification , likely represents atelectasis , but in the appropriate clinical setting could represent a small developing consolidation .