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': 'Monitoring of β-HCG Useful in Management ofa) H.moleb) Choriocarcinomac) Ectopic Pregnancyd) Endodermal Sinus Tumor \nSelect and explain. \nA. ab, B. abc, C. acd, D. bcd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: β-hCG levels are helpful in monitoring:\na. H. mole:\n“ A method of detecting the persistent mole and development of choriocarcinoma is by estimating hCG is the serumurine”.\nShaw 14/e, p 231\nb. Chorio carcinoma:\nβ-hCG is a specific marker for choriocarcinoma.\nThe levels of b-hCG are monitored following chemotherapy and complete regression of tumor is indicated when three consecutive weekly radioimmunoassays of hCG in serum are negative.\nShaw 14/e, p 235\nc. Ectopic pregrancy:\nIn case of unruptured ectopic pregnancy which is managed medically with methotrexate or by conservative surgerymonitoring is done by estimating β-hCG levels.\n“Following conservative surgery or medical treatment ,estimation of β-hCG should be done weekly till the value becomes < 5.0 mIU/ml”\nDutta Obs 6/e, p 191\nd. Endodermal sinus tumor-\n‘These tumors are yolk sac tumors and their markers are Alpha fetoprotein and antityrypsinso their levels and not betahCG. So hCG levels are not used for monitoring.\nShaw 14/e, p 380', 'role': 'assistant'}]