Carcinoma that doesnot arise from thyroid follicles: (A) Medullary carcinoma-thyroid, (B) Papillary carcinoma-thyroid, (C) Anaplastic carcinoma-thyroid, (D) Huhle cell carcinoma-thyroid
Answer is A. Medullary carcinoma thyroid arise from parafollicular &;C&; cells. 20-30% of these occur in familial basis as pa of MEN 2A and MEN 2B syndromes Papillary, follicular and anaplastic carcinomas arise from follicular cells Huhle cell crcinoma is a subtype of follicular carcinoma and has more aggresive biological behaviour, compared to other follicular carcinomas of thyroid.