This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Imaging of Alveolar Lung Disease, Subject name: Radiology
[{'content': 'Flexible Bronchoscope contains holes for all of these functions EXCEPT? \nSelect and explain. \nA. Ventilation, B. Drainage of secretion, C. For biopsy, D. To remove foreign body', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) To remove foreign bodyRef.: Harrison 19th ed. /1667Foreign body is removed by rigid bronchoscopy.Indications for Rigid Bronchoscopy* Bleeding or hemorrhage* Foreign body extraction* Deeper biopsy specimen when Fiber-optic specimen is inadequate* Dilation of tracheal or bronchial strictures, relief of airway obstruction, insertion of stents, and pediatric bronchoscopy.* It is also used for tracheobronchial laser therapy or other mechanical tumor ablation.', 'role': 'assistant'}]