Histopathological findings
The distribution of 285 cases evaluated according to RP GSs and GGs are
given in Table 1. There were no cases with GSs 5+4 and 5+5. The
comparison between biopsy GSs and RP GSs is given in Table 2. Mean tumor
volume was calculated as 8% (IQR: 5-17). While the tumor was
unilaterally located in 64 (22.4%) patients (left prostate 34 cases,
right prostate 30 cases), in 221 (77.6%) patients the tumor infiltrated
both lobes. The distribution of the cases according to the pathological
stages was found as 198 (69.5%) cases in the pT2 category, 54 (18.9%)
cases in the pT3a category, and 33 (11.6%) cases in the pT3b category.
Considering HP patterns, well-formed glands were observed in all 144
(50.5%) GS 3+3 (GG I) cases. The distribution of different
histomorphological appereances seen in Gleason pattern 4 (Figure 1) and
the ones seen in Gleason pattern 5 (Figure 2) is shown in Table 3. The
foamy variant was seen in 43 (15.1%) cases, the most frequent one being
GS 3+4 and secondly 4+3, while the pure form was observed only in 5
cases with GS 3+3 tumors (Table 1).