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. Anaplastic Ca Thyroid', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Follicular Carcinoma thyroid Follicular Ca metasizes primarily through the blood, and Lymph node metastasis is quite rare. Lymph nodes are frequently involved in patients with - Papillary - Medullary - Huhle cell carcinomas and - Anaplastic", 'role': 'assistant'}]