Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacer device is noted with leads terminating in the right atrium and right ventricle , unchanged . Moderate to severe cardiomegaly is relatively similar compared to the previous study . There is mild pulmonary edema , slightly worse in the interval , without pleural effusion or pneumothorax identified . Patchy opacities in the lung bases likely reflect areas of atelectasis . There is no acute osseous abnormality grossly detected .
    OUTPUT:
    
Mild congestive heart failure with mild pulmonary edema , worse in the interval .