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目的探讨甲状腺微小乳头状癌(PTMC)超声显像特征。方法分析经手术病理证实的56例(61个结节)PTMC的超声表现,观察结节内部回声、纵横比、边界、微钙化、形态、囊变、血流。选取同期58例65个直径≤1.0cm的良性结节作为对照组。结果 PTMC超声特征为:低回声占92%,纵横比≥1的占67%,边界不清的占75%,微钙化者占54%,形态不规则者占64%,实性结节占98%,组间比较差异具有统计学意义。两组间血流差异无统计学意义。选用极低回声、纵横比≥1、微钙化三种PTMC超声特征进行并联试验,其灵敏度为92%,特异度为74%,诊断符合率达82%。结论 PTMC超声显像具有特征性表现。
Objective To investigate the characteristics of ultrasonographic imaging of thyroid papillary carcinoma (PTMC). Methods The ultrasound findings of 56 cases (61 nodules) of PTMC confirmed by surgery and pathology were analyzed. The echo, aspect ratio, borderline, microcalcifications, morphology, cystic changes and blood flow were observed. Select the same period 58 cases of 65 benign nodules ≤ 1.0cm as a control group. Results The features of PTMC ultrasound were as follows: low echogenicity accounted for 92%, aspect ratio ≥1 accounted for 67%, boundary unclear 75%, microcalcifications 54%, irregular shape 64%, solid nodules 98 %, The difference between groups was statistically significant. No significant difference in blood flow between the two groups. The sensitivity, 92% specificity, 74% specificity and 82% accuracy of diagnosis were tested by using ultrasonography with very low echo, aspect ratio ≥1, and microcalcification. Conclusion PTMC ultrasound imaging has the characteristic manifestation.