Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomegaly is moderate . The mediastinal and hilar contours are normal . The pulmonary vasculature is mildly congested without overt edema . Retrocardiac atelectasis is slightly improved . No pleural effusion or pneumothorax . Pacemaker and leads are grossly unchanged in position . Apical portion of the previously seen left effusion is no longer visible .
    OUTPUT:
    
1 . Pulmonary vasculature is mildly congested without overt edema . 2 . Retrocardiac atelectasis is slightly improved .