Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . The lungs are clear of consolidation . Blunting of the left posterior costophrenic angle may be due to trace effusion or atelectasis . Cardiomediastinal silhouette is within normal limits . Calcified mediastinal nodes again noted . No acute osseous abnormality detected .
    OUTPUT:
    
Possible trace left effusion . Otherwise no acute cardiopulmonary process .