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
Malignancy in a multinodular goiter is most often: September 2012 
Select and explain. 
A. Follicular carcinoma, B. Papillary carcinoma, C. Anaplastic carcinoma, D. Medullary carcinoma
A: Follicular carcinoma
Answer: A: Follicular carcinoma 
Explanation: 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