Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . The lung volumes are low . The lungs appear clear bilaterally . Patient is known to have an area of scarring obscuring the right CP angle , better assessed on the prior CT chest dated ___ . Mild hilar prominence is unchanged and likely reflects calcified mediastinal and hilar nodes . Heart size is within normal limits . No pneumothorax and no pleural effusion . Bony structures appear intact .
    OUTPUT:
    
No definite signs of acute intrathoracic process .