Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a thin linear radiopaque object within the anterior chest wall overlying the superior aspect of the left breast , which could possibly be related to a surgical procedure . The right breast appears to be smaller than the left breast as seen on the previous study consistent with a history of lumpectomy and possible other interval surgical intervention . Heart appears to be normal in size and configuration . Cardiac and mediastinal contours are unremarkable . Lung fields are clear bilaterally with no evidence of focal consolidation , pleural effusions , or pneumothorax .
    OUTPUT:
    
No acute pulmonary process .