Highly aggressive and lethal thyroid cancer:: (A) Papillary, (B) Follicular, (C) Medullary, (D) Anaplastic
Answer is D. Ans. (d) Anaplastic CancerRef: Bailey and Love 27th Edition, Page 820* Lethal almost always in 6 months.* It can arise de novo or dedifferentiation of a papillary or poorly differentiated carcinoma** RT and CT does not increase survival