Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A previously seen heterogeneous right upper lung opacity has resolved . The lungs are now clear . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
1 . No acute cardiac or pulmonary process . 2 . Resolution of previously seen right upper lobe pneumonia .