Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . No focal consolidation is seen . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal , likely accentuated by low lung volumes . Mediastinal contours are unremarkable .
    OUTPUT:
    
Low lung volumes without definite acute cardiopulmonary process .