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': 'False positive fistula test is associated with - \nSelect and explain. \nA. Perilymph fistula, B. Malignant sclerosis, C. Congenital syphilis, D. Cholesteatoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: False Positive Fistula Test–Hennebert Sign\n\nFistula test is positive without the presence of fistula.\nIt is seen in case of congenital syphilis and Meniere’s disease\nIn congenital syphilis, stapes foot plate is hypermobile while in meniere’s disease there is a fibrous band connecting utricular\xa0macula to the stapes footplate.\nIn both these conditions, movements of stapes result in stimulation of utricular macula which will cause nystagmus and vertigo\xa0leading to false positive fistula test. This is called as Hennebert sign.\n\nRef. Dhingra 5/e, p 47', 'role': 'assistant'}]