1Camargo RY, Tomimori EK. Usefulness of ultrasound in the diagnosis and management of well-differentiated thyroid car- cinoma[J]. Arq Bras Endocrinol Metabol, 2007, 51(5): 783- 792.
2Yoon DY, Lee JW, Chang SK, et al. Peripheral calcification in thyroid nodules: ultrasonographic features and prediction of malignancy[J]. J Ultrasound Med, 2007, 26(10): 1349- 1355.
3Khoo ML, Asa SL, Witterick IJ, et al. Thyroid calcification and its association with thyroid carcinoma[J]. Head Neck, 2002, 24(7): 651-655.
7Frates MC, Benson CB, Doubilet PM, et al. Prevalence and distribution of carcinoma in patients with solitary and multi- ple thyroid nodules on sonography[J].J Clin Endocrinol Metab, 2006, 91(9): 3411-3417.
7Khoo ML, Asa SL, Witterick IJ, et al. Thyroid calcification and its association with thyroid carcinoma. Head Neck,2002, 24(7):651-655
8Watters DA, Ahuja AT, Evans RM, et al. Role of ultrasound in the management of thyroid nodules. Am J Surg, 1992, 164(6):654-657
9Miyazaki T. Observation of calcification of thyroid tumors determined by CR and CT. Nippon Jibiinkoka Gakkai Kaiho, 1993, 96(9):1471-1481
10Kakkos SK, Scopa CD, Chalmoukis AK, et al. Relative risk of cancer in sonographically detected thyroid nodules with calcifications. J Clin Ultrasound, 2000, 28(7):347-352