Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest obtained with patient in sitting semi-upright position is analyzed in direct comparison with the next preceding similar study of ___ . Heart size has not changed since probably moderately enlarged . Thoracic aorta as before generally widened but without local contour abnormalities . The pulmonary vasculature is not congested presently , but there is a left - sided pleural effusion that obliterates the diaphragmatic contour and blunts of left lateral pleural sinus . Comparison suggests that the pleural effusion has increased in size . There is no evidence of pneumothorax and no new gross pulmonary abnormality can be identified . In comparison with the previous study for pulmonary vascular pattern that contains perivascular haze , this has now normalized .
    OUTPUT:
    
Improvement of pulmonary vascular congestion , increasing left - sided pleural effusion , no evidence of new pulmonary infiltrates .