Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear and well - expanded . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The heart is normal in size . The descending thoracic aorta is slightly tortuous or ectatic . The mediastinum and hila are within normal limits .
    OUTPUT:
    
No acute intrathoracic process . No pneumonia .