Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest . There has been no substantial interval re-expansion of the collapsed right lung . Right sided pneumothorax and large right pleural effusion are similar to prior . The left lung is clear . The right heart border is obscured but the left heart border and mediastinal contours are stable .
    OUTPUT:
    
Collapsed right lung with right - sided pneumothorax and large right pleural effusion , similar to prior .