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: Surgery
[{'content': 'Lymph node metastasis is least commonly seen with - \nSelect and explain. \nA. Papillary Ca Thyroid, B. Medullary Ca Thyroid, C. Follicular Ca Thyroid, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Follicular Ca metastasizes primarily through the blood and Lymph node metastasis is quite rare.\nLymph nodes are frequently involved in patients with\n\n\nPapillary\nMedullary\nHurthle cell carcinomas and\nAnaplastic', 'role': 'assistant'}]