Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . There is no focal consolidation , pulmonary edema , pleural effusion , or pneumothorax . Right infrahilar fullness is of unclear etiology . The cardiac size is normal . There is an old , right eighth rib fracture but no acute osseous abnormality .
    OUTPUT:
    
Right infrahilar fullness of unclear etiology for which CT of the chest is recommended to exclude pathology .