Malignancy in a multinodular goiter is most often: September 2012: (A) Follicular carcinoma, (B) Papillary carcinoma, (C) Anaplastic carcinoma, (D) Medullary carcinoma
Answer is A. Ans. A i.e. Follicular carcinoma Thyroid carcinoma Rarest: Anaplastic Ca Worst prognosis: Anaplastic Ca Best prognosis: Papillary Ca Associated with MEN II: Medullary Ca Developing in thyroglossal cyst: Papillary Ca Least malignant: Papillary Ca Developing in Hashimoto's thyroiditis: Papillary Ca MC type: Papillary Ca Associated with psammoma bodies: Papillary Ca