局灶性甲状腺炎与甲状腺乳头状癌常规超声及实时剪切波弹性成像表现

目的 对比观察局灶性甲状腺炎与甲状腺乳头状癌（PTC）常规超声及实时剪切波弹性成像（SWE）表现。方法 回顾性分析经病理证实的36例局灶性甲状腺炎及100例PTC患者[其中50例合并桥本甲状腺炎（HT）]，对比其常规超声声像图表现及杨氏模量值。结果 136例甲状腺结节均为实性。局灶性甲状腺炎与PTC患者之间，结节位置、数量、直径、形态及内部钙化差异均无统计学意义（P均>0.05），边界模糊、内部回声及纵横比>1差异均有统计学意义（P均<0.05）。局灶性甲状腺炎与PTC之间杨氏模量值最大值（E_max）、最小值（E_min）及平均值（E_mean）差异均无统计学意义（P均>0.05）；PTC患者中，合并HT者与无HT者之间SWE杨氏模量值E_max、E_min及E_mean差异均无统计学意义（P均>0.05）。结论 局灶性甲状腺炎与PTC常规超声表现存在一定差异，有助于鉴别诊断；SWE对二者无明显鉴别诊断价值，是否合并HT不影响SWE诊断PTC。

Manifestations of conventional ultrasound and real-time shear wave elastography of focal thyroiditis and papillary thyroid carcinoma

Objective To observe the manifestations of focal thyroiditis and papillary thyroid carcinoma (PTC) of conventional ultrasound and real-time shear wave elastography (SWE). Methods Ultrasonic data of 36 thyroditis patients and 100 PTC patients (50 with Hashimoto''s thyroiditis[HT]) confirmed pathologically were retrospectively analyzed, and the performances of conventional ultrasound and Young''s modulus value were compared. Results All thyroid nodules in 136 cases were solid. No significant difference of nodules'' location, number, diameter, morphology nor internal calcification was found (all P>0.05), while statistically significant differences of obscure boundary, internal echo and aspect ratio>1 were detected between focal thyroiditis and PTC (all P<0.05). There was no difference of E_max, E_min and E_mean of Young''s modulus value between focal thyroidtis and PTC (all P>0.05), nor between patients with and without HT (all P>0.05). Conclusion The ultrasonographic manifestations were somehow different between focal thyroiditis and PTC, being helpful to differential diagnosis. SWE showed no significant differential diagnostic value for focal thyroidtis and PTC, which was not obviously affect by combination of HT or not.