system
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.
user
A well differentiated follicular carcinoma of thyroid can be best differentiated from a follicular adenoma by:-
assistant
The correct answer is  Vascular invasion is best to diffrentiate between follicular carcinoma and Follicular adenoma