Journal of Jilin University(Medicine Edition) ›› 2021, Vol. 47 ›› Issue (1): 203-209.doi: 10.13481/j.1671-587x.20210128

• Imageology • Previous Articles     Next Articles

Effects of three-dimensional transrectal ultrasound and MRI in evaluation of extramural vascular invasion degrees of middle and lower rectal cancer

Dong CHEN1,Haitao CHEN1,Zhiyao LI1,Fengming RANG2,Xi ZHANG3,Zhirui CHUAN1,Shicong TANG4(),Xiaomao LUO1()   

  1. 1.Department of Ultrasound,Cancer Hospital of Yunnan Province,Third Affiliated Hospital,Kunming Medical University,Kunming 650118,China
    2.Department of Pathology,Cancer Hospital of Yunnan Province,Third Affiliated Hospital,Kunming Medical University,Kunming 650118,China
    3.Department of Clinical Laboratory,Cancer Hospital of Yunnan Province,Third Affiliated Hospital,Kunming Medical University,Kunming 650118,China
    4.Department of Breast Surgery,Cancer Hospital of Yunnan Province,Third Affiliated Hospital,Kunming Medical University,Kunming 650118,China
  • Received:2020-09-27 Online:2021-01-28 Published:2021-01-27
  • Contact: Shicong TANG,Xiaomao LUO E-mail:tang_shicong@126.com;blueskyluoxiaomao@163.com

Abstract: Objective

To compare the results of three-dimensional endorectal ultrasound (3D-ERUS) and magnetic resonance imaging (MRI) in the diagnosis of extramural vascular invasion (EMVI) of middle and lower rectal cancer before operation,and to explore the clinical value of 3D-ERUS in the evaluation of EMVI of middle and lower rectal cancer before operation.

Methods

A total of 94 patients with rectal cancer confirmed by pathology were selected,and all patients were examined by 3D-ERUS and MRI. The 3D-ERUS and MRI images were evaluated with a grade 5 scores (0-4 scores) for EMVI.Receiver operating characteristic(ROC) curve was used to evaluate the results of 3D-ERUS and MRI in the diagnosis of EMVI, and the specificity (Sp),sensitivity (Se),positive predictive value (PPV),negative predictive value (NPV) accuracy,and the area under ROC curve(AUC) were calculated. Kappa test was used to evaluate the consistency between the results of 3D-ERUS and MRI in the diagnosis of EMVI and the pathological results.

Results

The accuracy of 3D-ERUS in the diagnosis of EMVI was 90.43%(Kappa=0.685,P<0.01), AUC was 0.868, Se was 81.25%,Sp was 92.31%,PPV was 68.42% and NPV was 96.00%.The accuracy of MRI in the diagnosis of EMVI was 87.23%(Kappa=0.589,P<0.01),AUC was 0.824, Se was 75.00%,Sp was 89.74%,PPV was 60.00% and NPV was 94.59%. There was no statistical difference in the accuracy of diagnosis between 3D-ERUS and MRI(χ2=0.214,P=0.643),and there was no statistical difference in the AUC of diagnosis between 3D-ERUS and MRI(Z=1.355,P=0.175).

Conclusion

3D-ERUS and MRI eualuation on EMVI of the patients with middle and lower rectal cancer before operation have highly clinical values. 3D-REUS can be used as a complementary tool of MRI to evaluate the EMVI of the patients with middle and lower rectal cancer before operation.

Key words: rectal neoplasms, three-dimensional endorectal ultrasound, magnetic resonance imaging, extramural vascular Invasion

CLC Number: 

  • R735.37