This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infections of the genital tract, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following is true with regards to genital tuberculosis ? \nSelect and explain. \nA. Ovarian involvement can occur without tubal infection, B. Infeility is mainly due to anovulation, C. Acid fast bacilli is identified in 100% cases of tubercular endometritis, D. A negative Mantoux test reasonably excludes tuberculosis', 'role': 'user'}, {'content': "Answer: D \nExplanation: The commonest site of affection is fallopian tubes. Ovaries are involved in 30 percent cases Infeility is due to tubal blockage, adhesions in the endometrial cavity,rarely ovulatory dysfunction Mantoux test: positive with high dilution suggests that patient is sensitised to tuberculoprotein. A negative test excludes TB After the endometrium is shed in each menstrual cycle,reinfection occurs from the basal layers or from tubes. D.C.DUTTA'S TEXTBOOK OF GYNAECOLOGY,Pg no:138,6th edition", 'role': 'assistant'}]