Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged including mild cardiomegaly . There are small new pleural effusions bilaterally since the prior radiographs . Streaky opacities at the lung bases are probably due to associated atelectasis but there is no definite parenchymal edema . Fissures appear slightly more thickened , however .
    OUTPUT:
    
Small pleural effusions and thickened fissures suggesting mild fluid overload although no frank pulmonary edema .