Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The hilar and mediastinal contours are within normal limits . A left retrocardiac opacity appears new since ___ . There is central vascular congestion with mild edema and interfissural fluid . There is no pneumothorax .
    OUTPUT:
    
1 . Central pulmonary vascular congestion with mild edema . 2 . Left retrocardiac opacity likely reflecting atelectasis and fluid , however , small consolidation can not be excluded .