Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is borderline enlarged . The mediastinal and hilar contours are within normal limits l . No CHF , focal infiltrate , effusion or pneumothorax is detected . Nodular density questioned on the chest x-ray from ___ is not appreciated on today 's radiograph . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute pulmonary process identified . No evidence of pneumothorax . Heart size is borderline , but unchanged .