Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrates stable top - normal heart size and low lung volumes . The nodular opacity in the left mid lung is unchanged , representing scarring . Persistent bibasilar atelectasis . No evidence of pulmonary vascular congestion or edema . No pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of fluid overload .