Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and well - aerated lungs without focal consolidation , pleural effusion , or pneumothorax . Linear opacity at the right lung base medially is chronic and may be scarring . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .