Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Dual - lead left - sided pacer device is again seen with leads unchanged in position . The cardiac and mediastinal silhouettes are stable . There is linear left basilar / lingular opacity , most likely due to atelectasis / scarring . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Left basilar atelectasis without definite focal consolidation . No pulmonary edema .