Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is similar tenting of the right hemidiaphragm with slight blunting of the right costophrenic angle , but similar to more remote prior study and probably due to sequelae of prior pneumonia and chest tube placement as given in the history . There is also slight pleural thickening along the right apex that does not appear changed . There is no pleural effusion or pneumothorax . The bony structures are unremarkable .
    OUTPUT:
    
Stable appearance of the chest .