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: Gynaecology & Obstetrics
[{'content': 'Which among the following is the commonest site of genital tuberculosis in women? \nSelect and explain. \nA. Tubes, B. Uterus, C. Cervix, D. Vagina', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Genitourinary tuberculosis is commonly secondary to infection elsewhere in the body, usually pulmonary, but active pulmonary disease can be documented in only one-third of patients. Vascular dissemination is responsible for infection of the fallopian tubes in almost all patients with genital tuberculosis, and involvement of the endometrium follows in 90%. Cervical disease can occur by direct extension or lymphatic spread, occurring in only 1% of cases. Ref: Khachikyan I., Stratton P. (2013). Chapter 40. Benign Disorders of the Uterine Cervix. In A.H. DeCherney, L. Nathan, N. Laufer, A.S. Roman (Eds), CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 11e.', 'role': 'assistant'}]