1American Thyroid Association (ATA) Guidelines Task force on Thyroid Nodules and Differentiated Thyroid Cancer, Cooper D S, Doherty G M, et al. Revised management guidelines for pa- tients with thyroid nodules and differentiated thyroid cancer [J]. Thyroid, 2009, 19 (1): 1167-1214.
3Shi C, Li S, Shi T, et al. Correlation between thyroid nodule calcification morphology on ultrasound and thyroid carcinoma [J]. J Int Med Res, 2012, 40 (1):350-357.
4Lee M J, Hong S W, Chung W Y, et al. Cytological results of ultrasound-guided fine-needle aspiration cytology for thyroid nod- ules: emphasis on correlation with sonographic findings [J]. J YonseiMedJ, 2011, 52 (5): 838-844.
5Das D K. Psammoma body: a product of dystrophic calcification or of a biologically active process that aims at limiting the growth and spread of tumor? [J]. Diagnostic cytopathology, 2009, 37 (7): 534-541.