Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs demonstrate mild cardiomegaly . Hilar contours are normal . Central vascular congestion is without over pulmonary edema . There is no large pleural effusion . There is no pneumothorax . Relative to prior examination dated ___ , there has been no appreciable changes .
    OUTPUT:
    
Cardiomegaly without overt pulmonary edema .