Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new right - sided pleural drain has been placed in the pleural effusion has significantly decreased in size . Cardiomegaly as well as pulmonary edema remaining . The small left pleural effusion is still present . The patient status post median sternotomy . There is no evidence of pneumonia . Increased vascular markings in the right upper lobe is likely asymetric edema , however pneumonia can be considered in the correct clinical setting .
    OUTPUT:
    
Significantly reduced right pleural effusion status post drain placement . No pneumothorax .