Abstract
We compared the ultrasound (US)-guided, fine-needle aspiration biopsy (FNAB) diagnosis, surgical pathology and isotope findings in 55 cases of thyroid surgery. Our diagnostic accuracy was the same as in other reports. Scintigraphical pattern suggesting malignancy is cold spot for Tc and hot spot for 201Tl in delay image. When FNAB was class 1 or 2, this pattern appeared almost as an adenomatous goiter. If there were no findings of calcification and irregular wall in the ultrasound or the CT examination, class 3 cases were judged benign. Many cases were considered acceptable for a wait-and-see strategy without operation. Ultrasound and CT differential diagnosis was difficult for follicular adenoma and follicular carcinoma. However, we could make a totality diagnosis by cytology, scintigraphy, ultrasound and CT in our study. Adenomatous goiter was seen usually as hot scintigraphy of the 201Tl delay image. If there were no findings of calcification or irregular wall in the ultrasound or CT examination, cases with hot scintigraphy of the 201Tl delay image were almost always adenomatous goiter. This pattern was also considered acceptable for a wait-and-see strategy without operation.
