超声对甲状腺峡部癌误诊原因分析

Analysis of ultrasonic misdiagnosis of carcinoma of thyroid isthmus

目的：总结甲状腺峡部癌误诊因素，分析误诊原因以提高超声对甲状腺峡部癌的检出率。方法：回顾分析超声检查出甲状腺峡部癌并经手术病理证实的病例22例、22个单发病灶，行超声检查，诊断TI-RADS3级。结果：22例病例中均为恶性病灶，全部病例均未见颈部淋巴结肿大，病灶均为单发，长0.3～0.5cm，乳头状癌14个，滤泡癌3个，髓样癌5个。结论：超声误诊甲状腺峡部癌的原因与病灶的声像图、操作者经验、癌肿所处的位置有关。

Objective:To summarize the factors of misdiagnosis of carcinoma of thyroid isthmus,analyze the reason ofmisdiagnosis in order to improve the detection rate of ultrasound on the isthmus of thyroid cancer.Methods:Ultrasonography of theisthmus of thyroid cancer was retrospective analyzed and were confirmed by surgery and pathology in 22 cases,22 single lesions.They were given ultrasound examination and diagnosed TI-RADS3.Results:All the 22 cases were malignant lesions;all cases werenot found cervical lymph nodes;lesions were solitary,0.3～0.5 cm;there were 14 papillary carcinoma,3 follicular carcinoma,5medullary carcinoma.Conclusion:Ultrasound misdiagnosis of thyroid isthmus cancer causes are related to lesion sonograms,operator experience,tumor location.