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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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FNAC is least diagnostic in which thyroid carcinoma-
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The correct answer is  Ans. is 'c' i.e., Follicular Ca o FNAC is the best investigation for the diagnosis of all thyroid carcinomas except follicular carcinoma. o It cannot differentiate b/w follicular carcinoma and follicular adenoma. The definitive diagnosis of carcinoma is made when capsular and vascular invasion by the carcinoma is revealed.