Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains moderately enlarged . Mediastinal and hilar contours are unchanged and within normal limits . The pulmonary vascularity is within normal limits . Patchy retrocardiac opacity is re - demonstrated as seen on the recent CT , and appears improved compared to the prior exams likely reflective of improving pneumonia . No pleural effusion or pneumothorax is seen . Minimal right basilar streaky opacity is compatible with atelectasis . No pneumothorax or pleural effusion is demonstrated . No acute osseous abnormalities are noted .
    OUTPUT:
    
Improved left lower lobe patchy opacity likely reflective of improving pneumonia .