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': 'Commonest cause of pyometra \nSelect and explain. \nA. Carcinoma cervix, B. Carcinoma endometrium, C. Vaginitis, D. Senile endometritis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is b i.e. Carcinoma endometrium Pyometra is collection of pus or mixture of pus and blood within the uterus. Causes : * Most common cause is Carcinoma endometriumdeg 2'ld most common cause is Senile endometritts. Other causes : * Congenital atresia of the vagina/cervix Stenosis of cervix/vagina following : - Operations - Burns - Radiotherapy Endometritis : - Senile - Tuberculous - Puerperal Carcinoma : Ca endometrium (most common) Ca cervix Ca corporis", 'role': 'assistant'}]