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': 'Treatment of choice for placental site trophoblastic disease is - \nSelect and explain. \nA. Observation, B. Surgery, C. Chemotherapy, D. Radiotherapy', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., SurgeryPlacental Site Trophoblastic TumorArises from the placental bed trophoblasts and invades the myometrium.Most of these tumors run a benign course, malignancy is rare.Tumor is resistant to chemotherapy.Hysterectomy is the recommended treatment.", 'role': 'assistant'}]