FNAC is not useful in which thyroid cancer -
High-Yield Explanation
Ans. is 'a' i.e., Follicular Carcinoma FNAC in Follicular carcinoma of thyroido It cannot distinguish between a Follicular Adenoma and a Follicular Carcinoma as this distinction is dependent not on cytology but on histological criteria such as capsular and vascular invasion. It thus cannot be used to diagnose follicular carcinomas