Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A 5 mm rounded opacity in the left suprahilar region is unchanged since the prior radiograph and appears to represent a normal pulmonary vessel viewed end - on . Lungs are clear except for minimal peripheral scarring at the left lung base , and there are no pleural effusions or acute skeletal findings .
    OUTPUT:
    
No radiographic evidence of suspicious lung nodule or mass .