Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate interval resolution of right lung base opacity since the prior study . There remains a small amount of atelectasis in the left lung base . Otherwise , the lungs are clear with no sign of pleural effusion , pulmonary edema , pneumothorax or focal consolidation concerning for pneumonia . The heart size is mildly enlarged , as before . The mediastinal contours are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process . Interval resolution of right lung base opacity since the prior study .