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': 'A case of Gestational Trophoblastic Neoplasia belongs to high risk group if disease develops after: \nSelect and explain. \nA. Hydatidiform mole, B. Full term pregnancy, C. Spontaneous abortion, D. Ectopic pregnancy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: High risk gestational trophoblastic disease.\nFIGO in 2000 devised a staging system for categorisation of gestational trophoblastic neoplasia into good prognostic (low risk) and bad prognostic (high risk) disease.\nGood prognosis (Low risk)\n\nShort duration (< 4 months)\nSerum β-hCG < 40,000 mIU/ml\nMetastasis limited to lung and vagina\nNo significant prior chemotherapy\xa0\nNo preceding term pregnancy\xa0\n\nBad prognosis (Low risk)\n\nLong duration (> 4 months)\nSerum 6-hCG > 40,000 mIU/ml\nMetastasis to brain or liver\nUnsuccessful prior chemotherapy\n\nGestational trophoblastic neoplasia following term pregnancy.\nAlso if we have a look at the WHO prognostic scoring system: GTN following a term pregnancy comes under high risk.\nRemember:\n\nHigh risk GIN occurs after term pregnancy .\nGTN occurs most commonly after H mole.', 'role': 'assistant'}]