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目的探讨甲状腺峡部乳头状癌(PTC)声像图表现。方法回顾性分析103例峡部及270例侧叶PTC患者,根据结节位置分组:I_1组(PTC仅位于峡部)、I_2组(伴侧叶PTC的峡部PTC)、L_1组(PTC仅位于侧叶)和L2组(I2组患者的侧叶PTC)。结果 I_1组和I_2组超声诊断符合率为79.9%和83.3%低于L_1组91.7%。与L_1组相比,I_1组PTC多表现为边缘规则、纵横比<1、回声均匀、甲状腺背景回声不均匀,I_1组结节接触和突破被膜比例、病理证实侵犯被膜比例、合并颈部淋巴结转移率也更高,差异有统计学意义(P<0.05)。结论峡部PTC超声表现与侧叶PTC有所不同,结节与被膜关系更紧密,易发生淋巴结转移。
Objective To investigate the appearance of thyroid isthmus papillary carcinoma (PTC). Methods A total of 103 cases of isthmus and 270 cases of PTC were retrospectively analyzed. According to the location of nodules, I1 group (PTC only in the isthmus), I2 group (PTC) ) And group L2 (PTCs in group I2). Results The coincidence rates of ultrasonic diagnosis in I_1 group and I_2 group were 79.9% and 83.3% respectively, lower than 91.7% in L_1 group. Compared with L_1 group, PTC in I_1 group showed edge rule with aspect ratio <1, uniform echogenicity, uneven echogenicity of thyroid gland, nodular contact and breakthrough rate in group I_1, histological invasion and metastasis of cervical lymph node The rate was also higher, the difference was statistically significant (P <0.05). Conclusion The isthmus PTC ultrasonic findings are different from those of the lateral lobe PTC. The nodules have a close relationship with the capsule and are prone to lymph node metastasis.