Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight blunting of the lateral left hemidiaphragm is more conspicuous on today 's exam compared to ___ in ___ , suggesting slight increase in atelectasis and probable trace left pleural effusion if present . Lung volumes remain low . The heart size is slightly larger than the prior exam , now moderately to severely enlarged . Moderate pulmonary vascular congestion and dependent edema is overall unchanged . Transvenous pacing lead is unchanged in position . No pneumothorax .
    OUTPUT:
    
Slight interval increase in cardiomegaly with overall unchanged dependent edema and trace , if any , left pleural effusion .