Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The heart is mildly enlarged . The cardiac , mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . Fullness of each hilum and indistinctness of pulmonary vasculature in conjunction with mild interstitial prominence is most often seen with mild pulmonary edema .
    OUTPUT:
    
Imaging findings suggest mild pulmonary edema ; if clinical findings are discordant , however , differential of atypical pneumonia could be considered .