Percentage of cold nodules that becomes malignant are?: (A) 5%, (B) 15%, (C) 20%, (D) 40%
Answer is C. ANSWER: (C) 20 %REF: Bailey and love 25th ed page 779See details of thyroid nodules in Surgery June 2011About 80% of discrete swellings are cold. The risk of malignancy is higher in "cold" lesions (20%) compared to "hot" or "warm" lesions (<5%).