Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right central venous catheter terminates in the right atrium . A Y-stent is in unchanged position . A left central venous catheter terminates in the upper SVC . There is a stable right upper lobe opacity consistent with right upper lobectomy . Moderate cardiomegaly is unchanged . Persistent mediastinal widening is due to distention of the mediastinal veins suggesting a component of volume overload . The right lung is however better aerated . There is mild pulmonary edema of the left lung . Small right pleural effusion is unchanged . There is no large pneumothorax . The gastric fundus is distended .
    OUTPUT:
    
Improved aeration of the right lung with continued mild pulmonary edema of the left lung .