This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ecotopic Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Suspected ectopic pregnancy is best diagnosed by \nSelect and explain. \nA. MRI, B. TVS, C. X-ray abdomen supine, D. HSG', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. TVS* Investigation of choice in a case of ectopic pregnancy/suspected case of ectopic pregnancy is Transvaginal scan.* Findings raising suspicion of ectopic on TVS:* Empty uterine cavity: most important* Finding of complex adnexal mass* Fluid (echogenic) in the pouch of Douglas.* Adnexal mass clearly separated from the ovary.* Rarely cardiac motion may be seen in an unruptured tubal ectopic pregnancy.', 'role': 'assistant'}]