Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are within normal limits . The lungs are overexpanded without change . Subtle nodular opacity adjacent to the right heart border corresponds to a known lung nodule in this region on prior chest CT of ___ . Lungs are otherwise clear , and there are no acute skeletal abnormalities .
    OUTPUT:
    
1 . Right middle lobe lung nodule , which has been more fully characterized by prior CT scan of ___ . At that time , a recommendation was issued to either perform a followup chest CT in ___ months or to perform a PET - CT . 2 . No radiographic evidence of pneumonia .