Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP frontal view of the chest demonstrates no evidence of pneumothorax or pneumomediastinum . Lungs are well aerated without focal consolidation or pleural effusion . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . There is no pulmonary edema . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
No pneumothorax or pneumomediastinum .