Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest demonstrates clear lungs . There is no focal consolidation , pleural effusion or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . The heart size is normal . There is no pulmonary edema . Multiple surgical clips project over left lateral chest . A round density projecting over L1 vertebral body may be external to the patient or represent surgical hardware . Partially imaged upper abdomen is otherwise unremarkable .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .