Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size and cardiomediastinal contours are unchanged . The thoracic aorta is tortuous . Lungs are clear without focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
No radiographic evidence of acute cardiopulmonary process . This examination neither suggests nor excludes the diagnosis of pulmonary embolism .