Assessment of using 360° endorectal ultrasound and real-time elastography in the diagnosis of benign and malignant rectal neoplasms in elderly patients / 中华老年医学杂志

ABSTRACT

Objective To evaluate the value of endorectal ultrasonography (ERUS) combined with real-time elastography in the diagnosis of benign and malignant rectal neoplasms in elderly patients.Methods Fifty-six consecutive patients with rectal neoplasms underwent ERUS and realtime tissue elastography at Beijing Hospital from February 2016 to December 2016.The imaging results were compared with results from postoperative or colonoscopic findings.Results Histopathological examinations identified 50 cases of adenocarcinomas,5 cases of adenomas and 1 case of neurilemmoma.The accuracy,sensitivity and specificity of ERUS in the diagnosis of benign and malignant rectal neoplasms were 89.3％ (50/56),92.0％ (46/50),and 66.7％ (4/6),respectively.The accuracy,sensitivity and specificity of real-time elastography in the diagnosis of benign and malignant rectal neoplasms were 80.4％ (45/56),82.0％ (41/50),and 66.7％ (4/6),respectively.However,there was no significant difference in sensitivity and specificity (x2 =3.20 and 0.50,P=0.074 and 0.480) between the two approaches.With the combination of ERUS and real-time elastography in the diagnosis of benign and malignant rectal neoplasms,the sensitivity and specificity were 75.4％ and 98.6％ for the series method and 88.9％ and 44.5％ for the parallel method.Conclusions Although elastography may not improve the accuracy of the diagnosis of benign and malignant rectal neoplasms,the strain information it provides can be used as a basis for subsequent diagnosis and treatment decisions.