Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes , which accentuate the bronchovascular markings . Given this , no focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . No definite evidence of free air is seen beneath the diaphragms .
    OUTPUT:
    
1 . Low lung volumes , but clear lungs . 2 . No definite evidence of free air beneath the diaphragms .