Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is stable mild elevation of the right hemidiaphragm with mild scarring in the right lower lobe accounting for the linear opacity at the right lung base . There is no convincing evidence for pneumonia or CHF . No large effusion or pneumothorax is present . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . A curvilinear hyperdensity projecting along the right mediastinal border corresponds with the costovertebral junction based on comparison with prior CT . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .