Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is not enlarged . Within limits of plain film radiography , no hilar or mediastinal lymphadenopathy is detected . No CHF , focal infiltrate or consolidation , pleural effusion , or pneumothorax detected . Radiographic appearance of the chest has not substantially changed since ___ .
    OUTPUT:
    
Chest x-ray examination within normal limits . No focal consolidation concerning for pneumonia .