Imaging Contrast Study Between DSA And Enhanced CT In The Early Postoperative Recurrence Of Hepatocellular Carcinoma

Objective: The purpose of this paper is to analyze the imaging findings of DSA and contrast-enhanced computed tomography of postoperative hepatocellular carcinoma and to compare the diagnostic efficacy of the two methods in detecting the early postoperative recurrence of hepatocellular carcinoma.In order to find a better way to improve the detection rate of postoperative recurrence lesions,for the early detection of liver cancer recurrence after surgery and timely treatment to provide help.Methods: From January 2016 to December 2016,patients with primary hepatocellular carcinoma(HCC)admitted to the Fourth Hospital of Hebei Medical University were enrolled.The resection of hepatocellular carcinoma was performed,265 cases of hepatocellular carcinoma were confirmed by pathology.This group of patients was followed up for 1 year.A total of 127 patients were followed up by the same period DSA and enhanced CT,of which 51 patients were confirmed hepatocellular carcinoma recurrence.Collecting the recurrence time of hepatocellular carcinoma after operation and looking for the recurrence peak of hepatocellular carcinoma after operation.SPSS 21.0 statistical software was used to compare the number of lesions detected by DSA and enhanced CT,the detection rate of DSA and enhanced CT for different size and recurrence type,with chi-square test or Fisher exact test.P <0.05 considered that the difference was statistically significant.Results: A total of 127 patients underwent 1-year follow-up.During the follow-up period,51 patients were diagnosed as recurrence HCC.The one-year recurrence rate was 40.2%.Thirty-eight patients relapsed within six months after resection,accounting for 74.5%.The highest peak occurred at 2-3 months after operation,accounting for 45.1%.A total of 125 lesionsof 51 patients were included in this study.88 lesions were found by CT,and109 lesions were detected by DSA.The detection rates of DSA and CT were87.2% and 70.4%,respectively.DSA and enhanced CT scan found that the number of postoperative recurrence of hepatocellular carcinoma had statistical significance(?2=10.559,P=0.001).For <1cm lesions,a total of 47 lesions,36 were detected by DSA,the detection rate was 76.6%,enhanced CT detected 19,the detection rate was 40.4%,The difference between them was ?2=12.665,P=0.001,which was statistically significant.For the lesions? 1cm,no significant difference was found between the two imaging methods.There were 67 local recurrence lesions,56 local recurrence lesions were detected by DSA,40 local recurrence lesions were detected by enhanced CT.The detection rate of DSA was 83.6% for locally recurrent lesions and 59.7% for enhanced CT.For locally recurrent lesions,there was a significant difference in the detection rate between DSA and enhanced CT(?2=9.404,P=0.002).There was no significant difference in the number of tumors between DSA and contrast-enhanced CT scan(?2=1.914,P=0.166)for chi-squared tests of intrahepatic metastases detected by enhanced CT and DSA.Conclusions:1.After the operation of hepatocellular carcinoma,the recurrence peak was in half a year,and the most peak was 2-3 months after operation.2.DSA detection rate of postoperative recurrence of hepatocellular carcinoma is better than enhanced CT.3.DSA for the small hepatocellular carcinoma recurrence lesions(diameter <1cm)detection rate is superior to CT,and for ? 1cm hepatocellular carcinoma recurrence lesions,two imaging methods have no significant difference.4.DSA for postoperative local recurrence of hepatocellular carcinoma detection rate is superior to enhanced CT,intrahepatic metastatic lesions of the two imaging methods no significant difference.