Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with chest radiograph from ___ , diffuse bilateral interstitial markings have somewhat improved , which may reflect improvement in pulmonary edema in the background of chronic interstitial lung disease . There is no focal consolidation , pleural effusion or pneumothorax . Biapical pleural thickening is seen , unchanged . Mediastinal and hilar contours are stable . Substantial cardiomegaly is unchanged .
    OUTPUT:
    
1 . Mildly improved bilateral diffuse interstitial markings likely reflects improvement in pulmonary edema in the background of chronic interstitial lung disease . 2 . No evidence of pneumonia .