Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is diffuse interstitial abnormality bilaterally which may be due to chronic pulmonary disease and / or pulmonary edema . Atypical infection not excluded . No large pleural effusion is seen . There is no pneumothorax . The aorta is tortuous . The cardiac silhouette is mildly enlarged .
    OUTPUT:
    
Diffuse increased interstitial markings bilaterally with differential diagnosis including pulmonary edema and / or chronic lung disease .