Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The exam is somewhat limited by technique and body habitus . Within the limitations , mild vascular congestion is significantly changed from the most recent radiograph . There is no overt pulmonary edema . There is no focal airspace opacity , pleural effusion , or pneumothorax . The mediastinal contours are normal . The heart size is moderately enlarged , and unchanged . A compression deformity in a lower thoracic or upper lumbar vertebral body is unchanged .
    OUTPUT:
    
Moderate cardiomegaly with unchanged mild vascular congestion .