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: ENT
[{'content': 'Nasal septum perforation occurs in all the following except - \nSelect and explain. \nA. Tuberculosis, B. Nasal surgery, C. Syphilis, D. Rhinosporidiosis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Causes of septal perforation are : -\n\n1) Trauma\n2) Iatrogenic : - Nasal surgery, nasal intubation or nasogastric tube placement\n\nChronic inflammation (Wegener's granulomatosis, Syphilis, T.B. Leprosy, atrophic rhinitis, Sarcoidosis)\nNasal myiasis\nRhinolith or neglected foreign body.\nAs a complication of septal abscess or hematoma, if drainage is delayed.\nPoisons (cocaine, topical steroids and decongestants)\nTumors of septum e.g., chondrosarcoma, granuloma", 'role': 'assistant'}]