Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are relatively well expanded and grossly clear . Previously noted pulmonary edema and right middle lobe opacity have resolved . There is no pleural effusion or pneumothorax . A small hiatal hernia is again noted . Cardiac , mediastinal and hilar contours are otherwise unchanged .
    OUTPUT:
    
Resolution of previously noted pulmonary edema and right middle lobe opacity . No evidence of pneumonia .