Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle . The heart size is normal , and the mediastinal and hilar contours are unremarkable . The pulmonary vascularity is normal . There is no focal consolidation or pneumothorax . Minimal retrocardiac atelectasis is seen . On the lateral view , there appears to be blunting of the costophrenic angle posteriorly on the right suggestive of a small effusion . There are no acute osseous abnormalities . Degenerative changes of the thoracic spine are present .
    OUTPUT:
    
Small right pleural effusion .