Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bedside semi-upright AP radiograph of the chest demonstrates persistent low lung volumes and bibasilar atelectasis . There has been interval improvement in the degree of pulmonary vascular engorgement , however , a stably widened mediastinum suggests persistent central venous congestion . Moderate cardiomegaly is unchanged . A tortuous and unfolded aorta is once again noted , however , the possible presence of right aortic arch is more equivocal on this study . There are persistent small bilateral pleural effusions . There is no pneumothorax . An endotracheal tube terminates in a lessened 3 .6 cm above the carina and a nasogastric tube courses below the diaphragm and inferiorly beyond the field of view .
    OUTPUT:
    
1 . Interval improvement in pulmonary vascular engorgement . 2 . Persistent bibasilar atelectasis and small pleural effusions .