Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . There appears to be increased consolidation at the left lung base . There is no large pneumothorax or pleural effusion . No definite rib fractures are identified .
    OUTPUT:
    
New consolidation at the left lung base which may be secondary to atelectasis however an acute infectious process can not be excluded . No definite rib fractures are identified . However if there is further clinical concern for rib fractures , a dedicated rib series would be recommended for further evaluation .