Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . Allowing for changes due to this , the cardiomediastinal silhouettes are stable and within normal limits , with a mildly tortuous thoracic aorta . Mild prominence of the cardiac silhouette likely relates to low lung volumes and AP technique . There is no focal consolidation . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary process .