This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genital Tract Infections (Too hot to handle!), Subject name: Gynaecology & Obstetrics
[{'content': 'Common mode of transmission in pyogenic TB salpingitis:- \nSelect and explain. \nA. Hematogenous, B. Lymphatic, C. Direct invasion, D. Sexually transmitted', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Genital TB Almost always a secondary infection Common primary sites : Lungs > Lymph > abdomen Route of spread - Hematogenous Most common site of genital TB is fallopian tubes (Bilateral involvements) > Uterus In fallopian tubes - Most commonly affected pa is ampulla Most common symptom is infeility Sites of genital TB % involvement Fallopian tubes 90 - 100% Uterus %50 -60 % Ovaries 20 - 30 % Vagina & vulva 1-2 %', 'role': 'assistant'}]