Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are stable and within normal limits . There are low lung volumes . The bilateral hila are unremarkable . There is basilar atelectasis ; otherwise , the lungs are clear . There is no pulmonary vascular congestion . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Low lung volumes due to ascites . No acute cardiopulmonary process .