Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . No focal opacity to suggest pneumonia is seen . No pleural effusion , pulmonary edema or pneumothorax is present . The heart size is within normal limits . No free air is seen beneath the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process . No evidence of pneumoperitoneum .