Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral radiographs of the chest again demonstrate a large right pleural effusion with adjacent atelectasis . The left costal phrenic angle is blunted and an effusion is likely . Partial collapse of the left lower lobe is redemonstrated , although superimposed infection is not excluded . Compared to the prior radiograph from ___ , there is more vascular congestion , especially in the left hilum .
    OUTPUT:
    
Large right - sided pleural effusion with adjacent atelectasis . Left basilar opacity likely represents atelectasis , although infection is not excluded . Mild increase in vascular congestion .