Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette and pulmonary vasculature are unremarkable . The lungs are hyperinflated . Again noted is an linearly oriented nodular opacity in the right upper lobe , unchanged since ___ , with associated right upper lobe volume loss . There is no pleural effusion or pneumothorax . No definite consolidation is identified .
    OUTPUT:
    
1 . No acute intrathoracic abnormality . 2 . Persistent , linearly oriented nodular right upper lobe opacity . Although potentially due to scarring , further evaluation with chest CT may be helpful to exclude a slow growing lung adenocarcinoma or indolent infection .