Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable normal heart size , mediastinal and hilar contours . Calcified hilar lymph nodes are unchanged . No focal consolidation , pleural effusion , pulmonary edema or pneumothorax . A linear density projecting over the sixth right anterior rib corresponds to a bone island within the rib seen on prior CT .
    OUTPUT:
    
No acute process .