Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal view of the chest was obtained . The heart is of normal size with normal cardiomediastinal contours . Linear atelectasis is present in left lower lung . No focal consolidation , pleural effusion , or pneumothorax . Surgical clips overlie the right upper quadrant .
    OUTPUT:
    
Left lung base linear atelectasis . No focal consolidation .