Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without a consolidation or pulmonary edema . There is no pleural effusion or pneumothorax . The heart is mildly enlarged . In the right hila , there is a small rounded smooth opacity which likely represents the confluence of a prominent azygos vein and the SVC .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Mild cardiomegaly .