Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright portable chest radiograph demonstrates adequate lung volumes , with minimal residual left basilar opacity . Moderate cardiomegaly is unchanged , with post-operative mediastinal prominence . The pulmonary vasculature is normal . There are likely small bilateral pleural effusions . A left axillary pacemaker is unchanged in appearance , median sternotomy wires are again noted .
    OUTPUT:
    
Unchanged left basilar atelectasis and small bilateral pleural effusions . Unchanged moderate cardiomegaly . No pulmonary edema .