Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears mildly enlarged . The mediastinal and hilar contours appear within normal limits . The lung volumes appear low . There is no definite persistent visualization of a previously noted tiny pneumothorax , although there is persistent but somewhat decreased subcutaneous emphysema lying outside of the chest wall and tracking into the base of the right neck . There is no definite pleural effusion . Thickening of the right major fissure appears unchanged , however . Diffuse hazy and reticular opacities appear unchanged .
    OUTPUT:
    
Similar widespread moderate pulmonary abnormality with low lung volumes . No definite persistent visualization of small pneumothorax . No evidence for substantial pleural effusion .