Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged , though improved since the ___ radiograph . Multiple intact sternal wires are unchanged in orientation . There is pulmonary vascular engorgement without overt edema . There is no pneumothorax , focal consolidation , or pleural effusion .
    OUTPUT:
    
Mild cardiomegaly , improved since ___ . Central pulmonary vascular congestion , but no pulmonary edema . No effusions .