Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . There is mild linear density at the right lung base which is most compatible with atelectasis . No definite consolidation to suggest the presence of pneumonia . No effusion or pneumothorax . The heart and mediastinal contours are normal . The imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Probable linear atelectasis at the right lung base . No convincing signs of pneumonia .