Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the heart is present . Mediastinal contour is unremarkable , as are the hilar contours . Lung volumes are low bilaterally with diffuse increased interstitial abnormality which may be chronic . No large pleural effusion or pneumothorax is present . No definite pulmonary edema is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Diffuse interstitial abnormality suggestive of a chronic lung disease , and correlation with previous imaging is recommended . If none are available , further assessment with high resolution chest CT is suggested .