Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes , without pleural effusion . There is no pneumomediastinum or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . There is no pulmonary edema . Multiple surgical clips project over left hemidiaphragm and mediastinum . Post - surgical left rib defect is again noted . Biapical pleural thickening is longstanding . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process , specifically - no pneumothorax or pneumomediastinum .