Highly aggressive and lethal thyroid cancer:
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
Papillary
Follicular
Medullary
Anaplastic
Thyroid Gland