This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Topical mitomycin C is used in the treatment of ? \nSelect and explain. \nA. Basal skull ca, B. Tracheal stenosis, C. Skull base osteomyelitis, D. Angiofibroma', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Tracheal stenosis o Mitomycin-C is used in subglottic laryngeal and tracheal stenosis after endoscopic treatment of stenosis to prevent its relapse. o Mitomycin C is a potent fibroblast inhibitor, therefore topical application of Mitomycin C reduces granulation tissue formation and prevent recurrence.", 'role': 'assistant'}]