This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal system, Subject name: Anatomy
The term fetal Adenoma is used for 
Select and explain. 
A. Hepatoma liver, B. Fibroadenoma breast, C. Follicular Adenoma of thyroid, D. Craniopharngioma
C: Follicular Adenoma of thyroid
Answer: C: Follicular Adenoma of thyroid 
Explanation: Adenomas of the thyroid are typically discrete, solitary masses, derived from follicular epithelium, and hence they are also known as follicular adenomas. Clinically, follicular adenomas can be difficult to distinguish from dominant nodules of follicular hyperplasia or from the less common follicular carcinomas. In general, follicular adeno- mas are not forerunners to carcinomas; neveheless, shared genetic alterations suppo the possibility that at least of subset of follicular carcinomas arises in preexisting adeno- mas (see later). Although the vast majority of adenomas are nonfunctional, a small subset produces thyroid hor- mones and causes clinically apparent thyrotoxicosis. Hormone production in functional adenomas (