Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains moderately enlarged . The mediastinal and hilar contours are unchanged . The pulmonary vasculature is not engorged . Patchy opacities are noted within the right lung base , more pronounced when compared to the previous exam . Nodular opacity measuring 6 mm is re - demonstrated within the right mid lung field . No pleural effusion or pneumothorax is present . No overt pulmonary edema is demonstrated . Moderate multilevel degenerative changes are again seen in the thoracic spine .
    OUTPUT:
    
Worsening patchy opacity in the right lung base , potentially worsening atelectasis though infection is not excluded .