Missed Diagnosis and Misdiagnosis of Prostate Cancer Based on Prostate Imaging Reporting and Data System version 2 Multi-parametric MRI / 中国医学影像学杂志

ABSTRACT

Purpose In order to improve the detection rate and diagnostic accuracy of clinically significant prostate cancer (PCa),prostate imaging reporting and data system version 2 (PI-RADS v2) was introduced to standardize multi-parametric MRI (mp-MRI) assessment classification standard.This study was designed to analyze the missed diagnosis and misdiagnosis of PCa when PI-RADS v2 was used as a diagnosis standard.Materials and Methods With step-section pathology as a "Golden Standard",mp-MR1 data of 52 patients with PCa were retrospectively analyzed,the problems confronted by radiologists when reading films with PI-RADS v2 were summarized,and the emphasis was given on missed diagnosis and misdiagnosis.Results 114 PCa foci were identified through stepsection pathology,including 83 clinically significant PCa.MRI found 91 suspicious lesions,in which 63 were true positive,with the misdiagnosis rate of 30.8％.The rate of missed diagnosis of PCa was 38.6％,and the rate of missed diagnosis of clinically significant PCa was 24.1％.Conclusion There will be relatively high rate of misdiagnosis and missed diagnosis when PI-RADS v2 is used as a diagnostic standard.