This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Malignancies, Subject name: Surgery
[{'content': 'In Medullary Carcinoma thyroid Tumor marker is: \nSelect and explain. \nA. TSH, B. Calcitonin, C. T3, T4 and TSH, D. Alpha Feto protein', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans is \'b\' ie calcitonin. * Schwartz Surgery writes -The presence of amyloid is a diagnostic finding, but immunohistochemistry for calcitonin is more commonly used as a diagnostic tumor marker. These tumors also stain positive for CEA (Carcinoembryonic antigen) and CGRP (Calcitonin gene-related peptide)"List of important tumor markets* Tumor Site Tumor markers*Medullary Ca of Thyroid-Calcitonin*Papillary Ca of Thyroid-Thyroglobulin*Prostate-Prostate specific antigen, Prostate acid phosphatase*Liver-AFP, Carcino embryonic antigen*Ovary-CA 125, Placental alkaline phosphatase, beta-HCG*Breast-CEA (Carcinoembryonic antigen)*Testicle-AFPBeta-HCGLDH*Lung (small cell Ca)-Neuron specific enolase Creatinine kinase brain isoenzyme (CK-BB)*Carcinoid-5 HIAA (5-hydroxy indole acetic acid)*Neuroblastoma-Neuron specific enolase*Pancreas-Insulin*Stomach-Gastrin*Pituitary-ACTH*Bone-Alkaline Phosphatase*Multiple myeloma-Bence Jones proteins.', 'role': 'assistant'}]