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': 'Normal size but non functioning uterus is usually associated with: \nSelect and explain. \nA. Stenosis of the external os, B. Uterine synechiae, C. Partial agenesis of the vagina, D. Complete absence of vagina', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Lets have a look at each option:\nOption a: Stenosis of external os would result in hematometra, i.e. uterus would be large and non functioning (hence ruled out).\nOption c: Partial agenesis of vagina\xa0\nIn parital agenesis of vagina a segment of vagina may be atretic in the upper-third. It is often associated with hypoplasia or even absence of cervix. Uterus may be normal and functioning or malformed.\nOption d: Complete absence of vagina is almost always associated with absence of uterus.\nHence by exclusion our answer is b i.e. uterine synechiae (Asherman syndrome)\nIn Uterine syechiae–the uterus does not function normally due to presence of adhesions size of uterus is normal.', 'role': 'assistant'}]