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Article Abstract
Objective: To evaluate the diagnostic values of (99m)TcO(-)(4) thyroid imaging plus ultrasonography in the differentiation of benign and malignant thyroid nodules.
Methods: (99m)TcO(-)(4) thyroid imaging and ultrasonography were performed for 114 patients with 125 thyroid nodules. And the examination results were compared with the post-operative pathological findings.
Results: (1) Among 125 thyroid nodules, there were thyroid adenoma (n = 64, 51.2%), thyroid cancer (n = 30, 24.0%) and other thyroid diseases (n = 31, 24.8%). On thyroid images, 73.6% of them were of cold nodules. And among these cold nodules, 25.0% were of thyroid cancer. Among the ultrasonic results, 125 nodules were predominantly of solid nodules and mixed solid and cystic nodules while the malignant rate of solid nodules was the highest. (2) The malignant rate of solid cool or cold nodules was greater than those of mixed solid and cystic cool or cold nodules (P < 0.005). (3)In solid cool or cold nodules with a diameter of ≥ 2.0 cm, thyroid cancer accounted for 62.5%.
Conclusion: The combination of (99m)TcO(-)(4) thyroid imaging and ultrasonography may help to evaluate the (99m)TcO(-)(4) uptaking functions of thyroid nodules so that it plays an important role in the differentiation of benign and malignant thyroid nodules.
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