Table 2.
Characteristics of prostate cancer
| A Clinical characteristics of prostate cancer diagnosed at repeat and initial biopsy. | |||
| Cancer at repeat biopsy (n = 23) | Cancer at initial biopsy (n = 162) | P | |
| Patient age* | 72.0 ± 5.7 | 71.5 ± 6.8 | 0.670 |
| PSA (ng/ml)* | 12.6 ± 8.6 | 27.0 ± 38.8 | 0.205 |
| Gleason score* | 6.3 ± 2.0 | 7.11 ± 1.59 | 0.150 |
| No. of positive cores* | 2.6 ± 2.2 | 3.33 ± 2.25 | 0.204 |
| cT | 0.005 | ||
| T1a-c | 18 (78%) | 79 (49%) | |
| T2a-c | 5 (22%) | 61 (37%) | |
| T3a,b | 0 (0%) | 16 (10%) | |
| T4 | 0 (0%) | 6 (4%) | |
| cN | 0.059 | ||
| N0 | 23 (100%) | 142 (79%) | |
| N1, N2 | 0 (0%) | 20 (21%) | |
| B Pathological characteristics of prostate cancer diagnosed at repeat biopsy and initial biopsy at the time of radical prostatectomy. | |||
| Cancer at repeat biopsy (n = 15) | Cancer at initial biopsy (n = 72) | P | |
| Patient age* | 72.3 ± 6.4 | 68.5 ± 5.5 | 0.042 |
| PSA level* | 14.3 ± 9.5 | 16.4 ± 24.9 | 0.59 |
| Gleason score* | 7.2 ± 1.4 | 7.1 ± 1.7 | 0.81 |
| Pathological factor | |||
| ≤ pT2b | 11 (73%) | 32 (44%) | 0.041 |
| ≥ pT3a | 4 (27%) | 40 (56%) | |
| pN0 | 14 (93%) | 67 (93%) | 0.97 |
| pN1 | 1 (7%) | 5 (7%) | |
| cap (+) | 4 (27%) | 32 (44%) | 0.20 |
| pn (+) | 6 (40%) | 37 (51%) | 0.42 |
| sv (+) | 1 (7%) | 12 (17%) | 0.32 |
| Biochemical failure | 4 (27%) | 26 (36%) | 0.48 |
*Data indicates the means ± SD.
#Biochemical failure represents the number of the patients, who were diagnosed as biochemical failure.
Abbreviations: PSA, prostate specific antigen; cap(+), positive for capsular invasion; pn(+), positive for perineural invasion; sv(+), positive for seminal vesicle invasion.