Incidence and Short- to Intermediate-Term Oncological Outcomes of Pathological T0 Prostate Cancer After Robot-Assisted Radical Prostatectomy: A Multicenter, Retrospective Cohort Study in Japan (MSUG94 Group)
Simple Summary
Abstract
1. Introduction
2. Materials and Methods
2.1. Patient Population
2.2. Pathological Analysis
2.3. Follow-Up Schedule
2.4. Statistical Analysis
3. Results
Patients and Characteristics
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
| BCR | Biochemical recurrence |
| bGG | Biopsy Grade Group |
| BMI | Body mass index |
| BRFS | Biochemical recurrence-free survival |
| IQR | Interquartile range |
| NCCN | National Comprehensive Cancer Network |
| NHT | Neoadjuvant hormonal therapy |
| PCa | Prostate cancer |
| PLND | Pelvic lymph node dissection |
| PSA | Prostate-specific antigen |
| pT0 | Pathological T0 |
| RARP | Robot-assisted radical prostatectomy |
| RP | Radical prostatectomy |
| TURP | Transurethral resection of the prostate |
References
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| Characteristic | pT0 Group N = 27 | non-pT0 Group N = 3052 | p |
|---|---|---|---|
| Age (years, median, IQR) | 69 (66, 73) | 68 (64, 72) | 0.119 |
| BMI (kg/m2, median, IQR) | 24.4 (23.2, 27.5) | 23.6 (21.8, 25.6) | 0.059 |
| Initial PSA (ng/mL, median, IQR) | 10 (6, 15) | 8 (6, 12) | 0.246 |
| Prostate volume (mL, median, IQR) | 37 (25, 54) | 30 (22, 40) | 0.077 |
| bGG (number, %) | 0.004 | ||
| 1 | 5 (18.5) | 611 (20.0) | |
| 2 | 2 (7.4) | 900 (29.5) | |
| 3 | 4 (14.8) | 616 (20.2) | |
| 4 | 9 (33.3) | 657 (21.5) | |
| 5 | 7 (25.9) | 268 (8.8) | |
| Clinical T stage (number, %) | 0.401 | ||
| 1 | 4 (14.8) | 571 (18.7) | |
| 2 | 18 (66.7) | 2165 (70.9) | |
| 3 | 5 (18.5) | 315 (10.3) | |
| 4 | 0 | 1 (0.03) | |
| NCCN risk classification (number, %) | 0.006 | ||
| Low | 1 (3.7) | 316 (10.3) | |
| Favorable intermediate | 4 (14.8) | 585 (19.2) | |
| Unfavorable intermediate | 3 (11.1) | 1022 (33.5) | |
| High | 16 (59.3) | 999 (32.7) | |
| Very High | 3 (11.1) | 130 (4.3) | |
| Neoadjuvant hormonal therapy (number, %) | 23 (85.2) | 311 (10.2) | <0.001 |
| PLND (number, %) | 21 (77.8) | 2117 (69.4) | 0.345 |
| Nerve-spare (number, %) | 0.154 | ||
| Not performed | 24 (88.9) | 2178 (71.4) | |
| Unilateral | 3 (11.1) | 671 (21.9) | |
| Bilateral | 0 | 201 (6.6) | |
| Unknown | 0 | 2 (0.07) | |
| Follow-up period (month, median, IQR) | 11 (1, 41) | 24 (11, 46) | 0.010 |
| Characteristic | pT0 Group N = 23 | non-pT0 Group N = 311 | p |
|---|---|---|---|
| Age (years, median, IQR) | 70 (66, 73) | 69 (64, 73) | 0.126 |
| BMI (kg/m2, median, IQR) | 24.7 (22.9, 27.6) | 24.0 (22.2, 26.0) | 0.260 |
| Initial PSA (ng/mL, median, IQR) | 9 (5, 14) | 10 (7, 18) | 0.211 |
| Prostate volume (mL, median, IQR) | 34 (25, 51) | 29 (21, 40) | 0.153 |
| bGG (n, %) | 0.747 | ||
| 1 | 3 (13.0) | 21 (6.8) | |
| 2 | 2 (8.7) | 39 (12.5) | |
| 3 | 3 (13.0) | 46 (14.8) | |
| 4 | 8 (34.8) | 125 (40.2) | |
| 5 | 7 (30.4) | 80 (25.7) | |
| Clinical T stage (number, %) | 0.494 | ||
| 1 | 2 (8.7) | 29 (9.3) | |
| 2 | 16 (69.6) | 175 (56.3) | |
| 3 | 5 (21.7) | 106 (34.1) | |
| 4 | 0 | 1 (0.3) | |
| NCCN risk classification (number, %) | 0.576 | ||
| Low | 0 (0) | 7 (2.3) | |
| Favorable intermediate | 3 (13.0) | 17 (5.5) | |
| Unfavorable intermediate | 2 (8.7) | 45 (14.5) | |
| High | 15 (65.2) | 193 (62.1) | |
| Very High | 3 (13.0) | 49 (15.8) | |
| PLND (number, %) | 19 (82.6) | 248 (79.7) | >0.999 |
| Nerve-spare (number, %) | 0.877 | ||
| Not performed | 20 (87.0) | 265 (85.2) | |
| Unilateral | 3 (13.0) | 36 (11.6) | |
| Bilateral | 0 | 10 (3.2) | |
| Follow-up period (month, median, IQR) | 9 (1, 41) | 19 (8, 35) | 0.198 |
| Case | Age (Years) | Initial PSA (ng/mL) | bGG | Clinical T Stage | Biopsy Finding | Follow-Up (Months) | BCR |
|---|---|---|---|---|---|---|---|
| 1 | 63 | 14.8 | 1 | 2a | 2 positive cores | 11 | No |
| 2 | 75 | 8.5 | 1 | 1c | 2 positive cores | 1 | No |
| 3 | 68 | 14.8 | 4 | 1b | Detected at TURP | 81 | No |
| 4 | 65 | 11.7 | 3 | 2a | 1 positive core | 35 | No |
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Tomioka-Inagawa, R.; Tomioka, M.; Tatenuma, T.; Sasaki, T.; Ikehata, Y.; Nakayama, A.; Toide, M.; Yoneda, T.; Sakaguchi, K.; Makiyama, K.; et al. Incidence and Short- to Intermediate-Term Oncological Outcomes of Pathological T0 Prostate Cancer After Robot-Assisted Radical Prostatectomy: A Multicenter, Retrospective Cohort Study in Japan (MSUG94 Group). Curr. Oncol. 2026, 33, 303. https://doi.org/10.3390/curroncol33060303
Tomioka-Inagawa R, Tomioka M, Tatenuma T, Sasaki T, Ikehata Y, Nakayama A, Toide M, Yoneda T, Sakaguchi K, Makiyama K, et al. Incidence and Short- to Intermediate-Term Oncological Outcomes of Pathological T0 Prostate Cancer After Robot-Assisted Radical Prostatectomy: A Multicenter, Retrospective Cohort Study in Japan (MSUG94 Group). Current Oncology. 2026; 33(6):303. https://doi.org/10.3390/curroncol33060303
Chicago/Turabian StyleTomioka-Inagawa, Risa, Masayuki Tomioka, Tomoyuki Tatenuma, Takeshi Sasaki, Yoshinori Ikehata, Akinori Nakayama, Masahiro Toide, Tatsuaki Yoneda, Kazushige Sakaguchi, Kazuhide Makiyama, and et al. 2026. "Incidence and Short- to Intermediate-Term Oncological Outcomes of Pathological T0 Prostate Cancer After Robot-Assisted Radical Prostatectomy: A Multicenter, Retrospective Cohort Study in Japan (MSUG94 Group)" Current Oncology 33, no. 6: 303. https://doi.org/10.3390/curroncol33060303
APA StyleTomioka-Inagawa, R., Tomioka, M., Tatenuma, T., Sasaki, T., Ikehata, Y., Nakayama, A., Toide, M., Yoneda, T., Sakaguchi, K., Makiyama, K., Inoue, T., Kitamura, H., Saito, K., Koga, F., Urakami, S., & Koie, T. (2026). Incidence and Short- to Intermediate-Term Oncological Outcomes of Pathological T0 Prostate Cancer After Robot-Assisted Radical Prostatectomy: A Multicenter, Retrospective Cohort Study in Japan (MSUG94 Group). Current Oncology, 33(6), 303. https://doi.org/10.3390/curroncol33060303

