According to the 8th-edition of the tumor-nodes-metastasis-classification localized prostate cancer (PCa) can be divided into two categories (cT1,cT2), two stages (SI,SII), and, by incorporating prostate-specific-antigen (PSA) and WHO-grade (Gleason-Score), into prognostic stage groups (PSG I,IIA,IIB,IIC,III).