Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate stable cardiomegaly . Mediastinal and hilar contours are unremarkable . Lungs are clear . No pleural effusion or pneumothorax evident . No osseous abnormality identified .
    OUTPUT:
    
Stable moderate cardiomegaly . No findings concerning for pneumonia .