Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac and mediastinal silhouettes appear within normal limits . There no focal pulmonary opacities , pleural effusions , or evidence of pneumothorax . Osseous structures appear unremarkable .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Note that chest radiographs have limited utility in assessing for pulmonary embolism .