RESUMO
Objective:To evaluate the value of color Doppler ultrasonography in diagnosing primary squamous cell carcinoma of the thyroid(PSCCT).Methods:Ultrasound images of 13 patients from August 2010 to June 2019 in the Second Hospital of Hebei Medical University with PSCCT confirmed by surgery and pathology were analyzed retrospectively.The ultrasonographic features were summarized.Results:All of the cases were single lesion. 92.3%(12/13) of the lesions were hypoechoic on ultrasound, 69.2%(9/13) of the lesions were ≥5 cm in maximal dimension and occupied one lobe of the thyroid gland, 76.9%(10/13) of the lesions were irregular, 69.2%(9/13) of the lesions had unclear boundary, 61.5%(8/13) of the lesions broke through the thyroid capsule and showed invasive growth. Calcification was rare, 23.1%(3/13) of the lesions were accompanied by striated calcification, 7.7%(1/13) of the lesions were accompanied by eggshell calcification, 15.4%(2/13) of the lesions showed few blood flow, 53.8%(7/13) of the lesions showed moderate blood flow, 30.8%(4/13) of the lesions showed rich blood flow, 69.2%(9/13) of the lesions were detected higher vascular resistance spectrum, 53.8%(7/13) of the lesions exhibited cervical metastatic lymph nodes. The ultrasonographic features of metastatic lymph nodes were hypoechoic, the lymphatic hilum structures were absent, with cystic changes in the interior.Conclusions:The color Doppler ultrasound images of PSCCT have certain specific features, and the identification of its sonographic characteristics is helpful to improve the diagnosing level of PSCCT.
RESUMO
Objective To evaluate common carotid arterial intima-media thickness (IMT) and elasticity using ultrasound radio-frequency data (RF-data) technology, the normal values of the related parameters were determined in healthy adults for their potential clinical applications.Methods One hundred and sixty healthy adults were included and divided into 4 age groups with 20 males and 20 females in each group.The quantitative parameters of common carotid arterial IMT, common carotid arterial distensibility (CD),local pulse wave velocity(PWVβ) and stiffness(β) were calculated automatically.The correlations that the IMT, PWVβ and β were correlated positively with aging and CD was correlated negatively with between IMT and PWVβ or β, while no correlation between IMT and CD.The positive correlation was found correlation between IMT and age ( P＜0.05) ;In 30～39 and 40～49 years old groups,PWVβ increased and CD decreased with aging;In 50～59 years old group,PWVβ and β increased with aging;But in 60～69 years these parameters changed with aging in subjects＜60 years old.Conclusions RF-data technology could quantitativly evaluate common carotid arterial IMT and elasticity, the normal values of the related parameters were determined with aging,it may be a promising modality to assess the arterial condition.
RESUMO
Objective To assess the diagnostic value of ultrasonographic elastography for identifying suspected malignant thyroid nodules. Methods Fifty-one patients with small single solid thyroid nodule underwent two-dimensional and color power Doppler ultrasonography. The size, shape, boundary, internal echo and halo, calcification of thyroid nodule were observed with two-dimensional ultrasound. Then color Doppler ultrasonography was used to detect blood signal and distribution in the nodules. Longitudinal scanning of elastography was performed, and the findings on elastography were classified into Ⅰ-Ⅴ grades. The ultrasonographic results were compared with pathologic findings. Results Six patients were found with grade Ⅰ and Ⅱ benign lesions;9 with grade Ⅲ ( 6 benign and 3 malignant), 36 with Ⅳ and Ⅴ (2 benign and 34 malignant) lesions on ultrasonographic elastography. Taking the elasticity grade Ⅳ or Ⅴ as malignant standard, the diagnostic sensitivity was 91.89%, specificity was 85.71%, accuracy was 90.20%, while the positive and negative predictive value was 94.44% and 80.00%, respectively. Conclusion Real-time ultrasound elastography is a promising imaging technique that can assist in the differential diagnosis of malignant thyroid small single solid nodule.