Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The LVAD is in situ . The Swan - Ganz catheter terminates in the pulmonary outflow tract . Mediastinal drains are unchanged in position . Left - sided pectoral transvenous pacer lead projects over the right atrium . Lung volumes are low . The heart is severely enlarged , unchanged compared to prior study . Bilateral pulmonary edema has improved . Right basilar atelectasis persists . Moderate left pleural effusion and atelectasis is unchanged . No pneumothorax is seen .
    OUTPUT:
    
1 . Severe cardiomegaly , unchanged compared to multiple priors . 2 . Slight decrease in extent of pulmonary edema . 3 . Moderate left pleural effusion , unchanged compared to prior study .