Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Subtle opacity along the left heart border is stable as compared to the prior study and may represent atelectasis / scarring or fat pad . No focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable and unremarkable . Old fracture deformity of the posterior right eighth rib is again seen , unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .