Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild pulmonary vascular congestion is stable since ___ . There is no overt pulmonary edema . There is no pleural effusion or pneumothorax . The mediastinal contours are normal . Moderate cardiomegaly is stable . Right shoulder arthroplasty again noted .
    OUTPUT:
    
Mild chronic pulmonary vascular congestion is unchanged since ___ .