Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable supine radiograph is compared to prior study dated ___ . Heart is enlarged . No appreciable vascular congestion is present . No focal consolidation convincing for pneumonia is identified . There is no large pleural effusion or pneumothorax . Visualized osseous structures are without an acute abnormality .
    OUTPUT:
    
Cardiomegaly is stable . No overt pulmonary edema . No focal opacity convincing for pneumonia is identified .