Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no change from the prior radiograph . Cardiac size is within normal limits . Multiple surgical clips project over the anterior mediastinum in left hemi thorax . The patient is status post median sternotomy . There is no pneumothorax or pleural effusion . Left - sided volume loss and left rib changes suggest prior thoracotomy and left lobectomy . No mass lesions are identified .
    OUTPUT:
    
No acute cardiopulmonary process . No mass lesions identified by radiograph .