This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Gland, Subject name: Surgery
[{'content': 'ACR-TIRADS scan for thyroid nodule characteristics include all except \nSelect and explain. \nA. Margin, B. Echogenicity, C. Vascularity, D. Shape', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) VascularityRef: ACR-TIRADS journalACR-TIRADS is based on* Composition* Echogenicity* Shape* Margin* Echogenic FociAll the above findings on USG are given points from 0 to 3 and total score calculated. Based on the total score* TR-1 - Benign: No FNA needed* TR-2 - Not suspicious: No FNA needed* TR-3 - Mildly Suspicious: (FNA if Size >2.5cm and Follow up if Size >1.5cm)* TR-4 - Moderately Suspicious (FNA if Size >1.5cm and Follow up if size >1cm)* TR- 5 - Highly Suspicious (FNA if Size >1cm and Follow up if size >0.5cm)', 'role': 'assistant'}]