Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are very low . No focal consolidation , pleural effusion or pneumothorax is detected on this single view . A calcified left upper lobe granuloma is noted . The aorta is tortuous and calcified . Heart size is difficult to evaluate in the setting of very low lung volumes .
    OUTPUT:
    
Low lung volumes , limiting evaluation of the mid and lower lungs .