Pathological Association Between Radical Prostatectomy and Needle Biopsy Specimen in Prostate Cancer Patients

Background: Prostate cancer (PCa) is the second most common cancer in men worldwide. The accuracy of Gleason score (GS), as a useful system for histopathological assessment, is important because any fault in the assessment and calculation leads to inappropriate approaches and complications. Multifocality is common in PCa and it is expected that different grading of cancer would be seen in different areas. This is one of the sources of diversity in pathologic reports of transrectal ultrasound guided biopsy (TRUS BX) and radical prostatectomy, which is obtained in 41% to 43% of samples with exact accordance; so, when choosing the treatment plan is based on of the needle biopsy sample, the accuracy of TRUS BX GS is bolded. Objectives: In this study, we compared the pathology reports of initial biopsy and final pathology of the prostate after radical prostatectomy to determine the discrepancy among the Iranian population. Methods: In this retrospective study, 105 of 127 patients that underwent both TRUS Bx and radical prostatectomy in Shohada-e-Tajrish Hospital from August 2009 to October 2017 enrolled in the study. Results: In the current study, 55% of the patients were without change and 36% were upgraded. The rate of abnormal digital rectal examination and the increase of prostate-specific antigene levels have a statistically significant correlation with the upgrading of GS, respectively (P = 0.001 and 0.02). Conclusions: It is generally concluded that the initial biopsy with the final pathology of radical prostatectomy is similar in our investigation.