Objective: to analyze the diagnostic value of ultrasonography in benign and malignant thyroid lesions. Methods: retrospective analysis was performed on 70 patients with pathologically confirmed thyroid lesions admitte...Objective: to analyze the diagnostic value of ultrasonography in benign and malignant thyroid lesions. Methods: retrospective analysis was performed on 70 patients with pathologically confirmed thyroid lesions admitted to our hospital from March 2019 to March 2020. According to the benign and malignant lesions, they were divided into benign group (n = 38) and malignant group (n = 32). Ultrasound examination was performed on all patients, and ultrasound signs, blood flow signals and hemodynamic indexes of patients in both groups were observed. Results: the ultrasonographic signs of malignant group were as follows: very low echo, blurred boundary and irregular lesion. Benign group: usually hyperechoic, its boundary is clear, the lesion is regular. The incidence of grade III blood signals in the malignant group was higher than that in the benign group and the incidence of grade I signals in the benign group was higher than that in the malignant group. Meanwhile, the peak systolic and end-diastolic blood flow velocity in the malignant group were also higher than that in the benign group, respectively, with statistical significance (P < 0.05). Conclusion: ultrasound has a good application effect in the diagnosis of benign and malignant thyroid lesions, and its ratio of blood flow signal level and hemodynamic indexes are significantly different, which is worth popularizing.展开更多
Background The incidence of thyroid cancer has been increasing.Our aim was to evaluate the efficacy of low-dose dualphase helical computed tomography （CT） in the characterization of thyroid lesions,and to discuss th...Background The incidence of thyroid cancer has been increasing.Our aim was to evaluate the efficacy of low-dose dualphase helical computed tomography （CT） in the characterization of thyroid lesions,and to discuss the relationship between image characteristics and their pathology.Methods One hundred and six patients with thyroid lesions underwent low-dose dual-phase helical CT after the injection of contrast material.CT scans were obtained at arterial and venous phase with delays of 25 and 65 seconds,and tube current of 60 and 120 mA,respectively.The attenuation change in the lesion between the arterial and venous phase was analyzed and categorized as ＂increased,＂ ＂decreased,＂ ＂mixed＂ or ＂no change.＂ Results Histopathologic diagnosis was obtained by surgery in 106 patients （115 lesions）.Of the 106 patients,45 had nodular goiter,5 thyroid adenoma,6 thyroiditis,and 50 papillary thyroid carcinoma （PTC） （59 lesions）.The attenuation value showed a significant difference （P ＜0.05） between the arterial and venous phase for the high attenuation area.There was statistical significant difference in terms of attenuation value in high attenuation areas at both phases and in low attenuation areas on arterial phase between nodular goiter and PTC （P ＜0.05）.However,there was no significant difference in attenuation value between adenoma and PTC.Twenty-nine cases （76.3％） of goiter manifested mixed type,3 cases （3/5） of adenoma showed decreased type,6 cases （6/6） of thyroiditis showed increased type,and 55 cases （93.2％） of PTC showed decreased type attenuation.The sensitivity,specificity for thyroid carcinoma by dual-phase CT were 94.9％ and 80.4％ respectively.The overall diagnostic accuracy for thyroid lesions by dual-phase CT was 87.8％.Conclusions The performance of dual-phase helical CT is related to the pathological structure of the lesions.The analysis of enhancement patterns by using dual-phase helical CT will be helpful in the differential diagnosis of thyroid lesions.展开更多
文摘Objective: to analyze the diagnostic value of ultrasonography in benign and malignant thyroid lesions. Methods: retrospective analysis was performed on 70 patients with pathologically confirmed thyroid lesions admitted to our hospital from March 2019 to March 2020. According to the benign and malignant lesions, they were divided into benign group (n = 38) and malignant group (n = 32). Ultrasound examination was performed on all patients, and ultrasound signs, blood flow signals and hemodynamic indexes of patients in both groups were observed. Results: the ultrasonographic signs of malignant group were as follows: very low echo, blurred boundary and irregular lesion. Benign group: usually hyperechoic, its boundary is clear, the lesion is regular. The incidence of grade III blood signals in the malignant group was higher than that in the benign group and the incidence of grade I signals in the benign group was higher than that in the malignant group. Meanwhile, the peak systolic and end-diastolic blood flow velocity in the malignant group were also higher than that in the benign group, respectively, with statistical significance (P < 0.05). Conclusion: ultrasound has a good application effect in the diagnosis of benign and malignant thyroid lesions, and its ratio of blood flow signal level and hemodynamic indexes are significantly different, which is worth popularizing.
文摘Background The incidence of thyroid cancer has been increasing.Our aim was to evaluate the efficacy of low-dose dualphase helical computed tomography （CT） in the characterization of thyroid lesions,and to discuss the relationship between image characteristics and their pathology.Methods One hundred and six patients with thyroid lesions underwent low-dose dual-phase helical CT after the injection of contrast material.CT scans were obtained at arterial and venous phase with delays of 25 and 65 seconds,and tube current of 60 and 120 mA,respectively.The attenuation change in the lesion between the arterial and venous phase was analyzed and categorized as ＂increased,＂ ＂decreased,＂ ＂mixed＂ or ＂no change.＂ Results Histopathologic diagnosis was obtained by surgery in 106 patients （115 lesions）.Of the 106 patients,45 had nodular goiter,5 thyroid adenoma,6 thyroiditis,and 50 papillary thyroid carcinoma （PTC） （59 lesions）.The attenuation value showed a significant difference （P ＜0.05） between the arterial and venous phase for the high attenuation area.There was statistical significant difference in terms of attenuation value in high attenuation areas at both phases and in low attenuation areas on arterial phase between nodular goiter and PTC （P ＜0.05）.However,there was no significant difference in attenuation value between adenoma and PTC.Twenty-nine cases （76.3％） of goiter manifested mixed type,3 cases （3/5） of adenoma showed decreased type,6 cases （6/6） of thyroiditis showed increased type,and 55 cases （93.2％） of PTC showed decreased type attenuation.The sensitivity,specificity for thyroid carcinoma by dual-phase CT were 94.9％ and 80.4％ respectively.The overall diagnostic accuracy for thyroid lesions by dual-phase CT was 87.8％.Conclusions The performance of dual-phase helical CT is related to the pathological structure of the lesions.The analysis of enhancement patterns by using dual-phase helical CT will be helpful in the differential diagnosis of thyroid lesions.
