Objective To evaluate the suitability of preoperative magnetic resonance imaging(MRI) positivity as a pre-dictor of biochemical recurrence after radical prostatectomy(RP). Methods Data of 115 diagnosed prostate cancer patientswith RP from 2006 to 2013 were collected retrospectively. According to MRI results, patients were divided into MRI positivegroup(n=87) and MRI negative group(n=28). The preoperative clinical data were compared between two groups. Biochemi-cal recurrence was defined as increase or persi...