Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is mild right base and right middle lobe atelectasis . No focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable . Aortic knob calcification is incidentally noted .
    OUTPUT:
    
Mild subsegmental right - sided atelectasis . Otherwise , no acute cardiopulmonary process .