Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval resolution of diffuse bilateral opacities seen on the most recent prior film . Currently , the lungs are well expanded and clear . There is mild cardiomegaly , and the mediastinal and hilar contours are stable . There is no pulmonary edema or pulmonary vascular congestion .
    OUTPUT:
    
1 . Mild cardiomegaly without signs of heart failure . 2 . No pneumonia .