Value Of Ultrasound In The Differential Diagnosis Of Benign And Malignant Nodules Of Thyroid

Objective: By statistical analysis the patients with ultrasound ofthyroid who has treatment in our hospital from2007to2011, we canexplore and summarize the differential diagnosis of thyroid ultrasound inbenign and malignant thyroid nodules, improve thyroid ultrasounddiagnostic accuracy of thyroid benign and malignant nodules, and guidethe clinical selection of appropriate treatment.Methods: Retrospective analyze the ultrasound image data ofpathologically confirmed248cases of nodular goiter and215cases ofthyroid cancer from2007to2011in our hospital,(All patients ultrasoundexamination results are reported by our hospital). Comparing thedifference of different pathological types of thyroid nodules in number,shape, wall structure, internal echo, calcification, anteroposterior totransverse diameter ratio, resistance to blood flow. All data is analyzed byusing the SPSS statistical software. Different pathological types ofthyroid nodules in ultrasound images were compared by using thechi-square test. If P<0.05, the difference is statistically significant.Results: In215cases of thyroid cancer,121cases are solitarynodules, and94cases are multiple nodules. In248cases of nodular goiter,67cases are solitary nodules, and181cases are multiple nodules. Theproportion of single nodules is56.3%and27.0%, P<0.05, so there issignificant difference. In248cases of nodular goiter there are206casesin the form of rule and42cases of irregular. In215cases of thyroidcancer there are24cases in the form of rules and152cases of irregular.The proportion of irregular shape is16.9%and86.4%, P<0.05, so there issignificant difference. There are202cases of the A/T <1, and15cases ofA/T>1in nodular goiter, the A/T>1ratio is6.9%. There are105cases of the A/T <1, and64cases of A/T>1in thyroid cancer, the A/T>1ratio is37.9%, P<0.05, so there is significant difference. In248cases ofnodular goiter, there are109cases of low echo and139cases of otherecho.139cases of other echo include54cases such as echo,29cases ofmixed echo,17cases of echo,39cases of high-echo. In215cases ofthyroid cancer, there are176cases of low echo and39cases of other echo.39cases of other echo include9cases such as echo,17cases of mixedecho,2cases of echo,7cases of high-echo,4cases of uneven echo. Thelow echo proportion is44.0%and81.9%. P<0.05, so there is significantdifference. There are30cases of the RI <0.7and10cases of the RI>0.7in nodular goiter. The ratio of the RI>0.7is25%. There are15cases ofthe RI <0.7and28cases of the RI>0.7in nodular goiter. The ratio of theRI>0.7is65.1%. P<0.05, so there is significant difference. In248casesof nodular goiter, there are162cases of nodular with blood flow and86cases without blood flow. In215cases of nodular goiter, there are147cases of nodular with blood flow and68cases without blood flow. Theproportion of Nodules within the blood flow is65.3%and68.4%. P>0.05,so there is no significant difference. In248cases of nodular goiter, thereare28cases of microcalcifications,68cases of other calcification, and152cases without calcification. The proportion of microcalcifications is11.3%, and the proportion of calcification is30.6%. In215cases ofnodular goiter, there are93cases of microcalcifications,60cases of othercalcification, and62cases without calcification. The proportion ofmicrocalcifications is43.3%, and the proportion of calcification is71.2%. P<0.05, so there is significant difference.Conclusion:1. Ultrasound is meaningful to identify benign andmalignant thyroid nodules.2. There are significant differences in theidentification of nodules of benign and malignant in the number, form,with or without calcified. Within the echo, the resistance to blood flow,anteroposterior to transverse diameter ratio of thyroid nodules.3. There isno significant difference of nodules with or without blood flow.