Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion or pneumothorax . Dense circular opacities projecting over the left mediastinum likely represent calcified lymph nodes , which were reportedly present based on the reports for prior imaging studies . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Probable calcified mediastinal nodes . Correlation with prior chest CT would be helpful when available .