[Sonographic evaluation of the special thyroid carcinoma]

To analyze the cases of thyroid carcinoma with special sonographic features, so as to increase the accuracy of sonographic diagnosis for thyroid carcinoma.

The sonographic characteristics of 9 patients with special sonographic appearance were analyzed. According to the sonographic features, they were divided into two kinds: 8 cases suffered from thyroid diffuse malignant lesions, and one case showed cystic lesion sticking out of the thyroid. The sonographic appearance of gray scale and color Doppler characteristics of the lesions were recorded.

In the first kind of lesions, the dimensional ultrasound appearance of gray scale had an apparent feature, however, its color Doppler characteristics had no apparent feature, and all of the 8 cases were diagnosed correctly by ultrasound. In the second kind of lesion, the sonographic appearance of gray scale and color Doppler had no special features, so the case was diagnosed as benign disease wrongly by ultrasound.

The first kind of lesions has apparent sonographic features, sonographic diagnosis can serve as the first choice. However, the second kind of lesion had no apparent sonographic feature.