Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The aorta is mildly tortuous . The arch shows patchy calcification . There is no pleural effusion or pneumothorax , but fissures appear mildly thickened . There is upper zone redistribution of pulmonary vasculature . Vessels also appear plump at each hilum and indistinct distally . There is no focal opacity convincing for pneumonia .
    OUTPUT:
    
Findings suggesting mild pulmonary congestion .