Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , moderate cardiomegaly is worsening . Increased density of the left lower lung could be related to lung collapse or could represent a consolidation . There is vascular engorgement . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
1 . Worsening moderate cardiomegaly . 2 . Increased left lower lung density , which could represent lung collapse or alternatively , depending upon clinical circumstances , pneumonia .