Objective To investigate the diagnostic value of ultrasonography of thyroid nodule calcification and micro calcification of thyroid carcinoma ,and different types of canceration rate of calcification .Methods To retro-spectively analyse the results of ultrasonography of 125 cases of thyroid nodule patients and compare with pathologi-cal findings .Results The pathological examination showed 36 cases of canceration ,accounted for the proportion is 28 .8% .The ultrasonic inspection of calcified cases ,the incidence was 88 .9% ,lower than the results of pathological examination ,had significant difference (χ2 =2 .382 ,P<0 .05) .Comparison of calcification group and non calcification group ,calcification group canceration rate was significantly higher than that of non calcification group (χ2 =31 .606 ,P<0 .01) .In calcification groups ,micro calcification canceration rate was significantly higher than that of normal calci-fication(χ2 =5 .288 ,P<0 .05) .Conclusion Ultrasonography has a high detection rate of calcification ,if the patients are detected with calcification disorder especially microcalcification symptoms ,their risk of cancer will increase signif-icantly ,should pay great attention to them .%目的：探讨超声检查甲状腺结节普通钙化及微钙化对甲状腺癌的诊断价值，以及不同钙化类型对癌变率的影响。方法回顾性分析125例甲状腺结节患者的超声诊断结果，并将其与病理检查结果进行比较。结果本次病理检查共显示癌变36例，占总例数的比例为28．8％。由超声检查出的钙化病例中，癌变率为88．9％，低于病理检查结果，差异有统计学意义（χ2＝2．382，P＜0．05）。钙化组和非钙化组比较，钙化组癌变率显著高于非钙化组癌变率，差异有统计学意义（χ2＝31．606，P＜0．01）。钙化组组内比较，微钙化癌变率显著高于普通钙化癌变率，差异有统计学意义（χ2＝5．288，P＜0．05）。结论超声对于显示钙化病症具有较高的检出率，患者如果被检出钙化病症特别是微钙化病症，其癌变的风险会显著增加，要引起高度重视。
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