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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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A well differentiated follicular carcinoma of thyroid can be best differentiated from a follicular adenoma by
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The correct answer is  A well differentiated follicular carcinoma of thyroid can be best differentiated from a follicular adenoma by capsular invasion/ vascular invasion. This is not made out in FNAC and hence FNAC is not very useful. USG can make out this differentiating feature of follicular carcinoma. Reference : page 482 SRB's manual of surgery 5th edition