Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pacemaker is in unchanged position with leads terminating in the right atrium and right ventricle . Median sternotomy wires appear intact . A nasogastric tube terminates in the stomach . The cardiomediastinal contours are normal . A new opacity at the left base with obscuration of the left hemidiaphragm likely reflects a small pleural effusion with underlying consolidation concerning for aspiration . The hilar contours are normal . There is no pulmonary vascular congestion . There is no pneumothorax . Unchanged opacity projecting over the right apex likely reflects stable pleural scarring .
    OUTPUT:
    
New opacity at the left base reflects probable aspiration with a small pleural effusion .