Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes . No definite focal consolidation is seen . No pleural effusion or pneumothorax is seen . Cardiac silhouette size is top - normal , likely exaggerated by low lung volumes . Mediastinal contours are unremarkable . No pulmonary edema is seen . Subtle irregularity at the lateral left third rib is felt to be due to overlap of structures . Correlate with focal tenderness at this site for possible nondisplaced fracture .
    OUTPUT:
    
Low lung volumes without focal consolidation . Subtle irregularity at the lateral left third rib is felt to be due to overlap of structures . Correlate with focal tenderness at this site for possible nondisplaced fracture .