Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest . There is no free air . The lateral part of the right hemithorax and right upper abdomen is not imaged . There is no focal consolidation , pleural effusion or pneumothorax . The cardiomediastinal and hilar contours are normal . The esophagus is dilated consistent with known achalasia .
    OUTPUT:
    
No acute cardiopulmonary process . No free air is identified .