This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Gland, Subject name: Surgery
Long standing multinodular goiter leads to: 
Select and explain. 
A. Follicular Ca thyroid, B. Colloid carcinoma, C. Medullary Ca, D. Papillary Ca
A: Follicular Ca thyroid
Answer: A: Follicular Ca thyroid 
Explanation: Ans. (a) Follicular Ca thyroidRef: Bailey and Love 26th edition, Page 765* Longstanding MNG can lead to follicular cancer.* Previous irradiation leads to papillary cancer.