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
Treatment of choice for placental site trophoblastic disease is - 
Select and explain. 
A. Observation, B. Surgery, C. Chemotherapy, D. Radiotherapy
B: Surgery
Answer: B: Surgery 
Explanation: 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.