False about isotope scanning: (A) Radiolabelled iodine (123I) is used, (B) Majority (80%) of 'cold' swellings are benign, (C) 5% functioning or 'warm' swellings will be malignant, (D) Useful in hypothyroid patients
Answer is D. Radiolabelled iodine (123I) is used majority (80%) of 'cold' swellings are benign and some (5%) functioning or 'warm' swellings will be malignant. Principal value is in the toxic patient with a nodule or nodularity of the thyroid.Ref: Bailey and love 27e, page no: 804