Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest . A left - sided implanted cardiac device ends with its leads in appropriate position . Sternotomy wires and mediastinal clips are stable . The lungs are clear . Mild cardiomegaly is stable . The mediastinal and hilar contours are normal . No pleural effusion or pneumothorax .
    OUTPUT:
    
Interval placement of left cardiac device with leads in appropriate position and no evidence of pneumothorax .