Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable , with mild cardiomegaly . Patchy opacities are seen in both lung bases , concerning for an acute infectious process , less likely atelectasis . Small bilateral pleural effusions are present . There is no evidence of overt edema . No pneumothorax is seen .
    OUTPUT:
    
Bibasal opacities with small pleural effusions , concerning for pneumonia .