Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation , pleural effusion or pneumothorax . No nodule or mass is seen . Heart size is normal . Mediastinal silhouette and hilar contours are normal . A left shoulder prosthesis is noted . There is eventration of the right hemidiaphragm .
    OUTPUT:
    
No nodule or mass seen .