Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the most recent radiograph , there is stable cardiomegaly . Elevation of the right hemidiaphragm is unchanged . The lungs are clear with no pleural effusion or pneumothorax . No evidence of pneumonia or pulmonary edema .
    OUTPUT:
    
Stable cardiomegaly without evidence of pneumonia or pulmonary edema