Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Comparison is made with the next preceding similar study of ___ . The AP single chest view demonstrates cardiac enlargement of similar magnitude as observed on the previous study . Cardiac configuration and appearance of thoracic aorta unchanged . The pulmonary vasculature is still congested , but has undergone significant improvement of the previously detectable perivascular haze in the pulmonary vasculature . Also , the previously described mild blunting of the lateral pleural sinuses has decreased and almost disappeared completely . There is no evidence of new pulmonary parenchymal infiltrates of pneumonic appearance . No pneumothorax can be identified in the apical area .
    OUTPUT:
    
Regression of previously existing significant pulmonary vascular congestive pattern two days ago . Significant cardiac enlargement persists . No new additional inflammatory parenchymal infiltrates can be identified on this single view chest examination .