1
|
Lehner F, Crippa A, Sigg S, Eberli D, Mortezavi A. Transperineal template saturation and conventional biopsy for stage prediction in prostate cancer. BJU Int 2023; 132:696-704. [PMID: 37704215 DOI: 10.1111/bju.16181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
OBJECTIVE To evaluate the performance of risk calculators (RCs) predicting lymph node invasion (LNI) and extraprostatic extension (EPE) in men undergoing transperineal magnetic resonance imaging/transrectal ultrasound (TRUS)-fusion template saturation biopsy (TTSB) and conventional systematic TRUS-guided biopsy (SB). PATIENTS AND METHODS The RCs were tested in a consecutive cohort of 645 men undergoing radical prostatectomy with extended pelvic LN dissection between 2005 and 2019. TTSB was performed in 230 (35.7%) and SB in 415 (64.3%) men. Risk of LNI and EPE was calculated using the available RCs. Discrimination, calibration, and clinical usefulness stratified by different biopsy techniques were assessed. RESULTS Lymph node invasion was observed in 23 (10%) and EPE in 73 (31.8%) of cases with TTSB and 53 (12.8%) and 158 (38%) with SB, respectively. RCs showed an excellent discrimination and acceptable calibration for prediction of LNI based on TTSB (area under the curve [AUC]/risk estimation: Memorial Sloan Kettering Cancer Center [MSKCC]-RC 0.79/-4%, Briganti (2012)-RC 0.82/-4%, Gandaglia-RC 0.81/+6%). These were comparable in SB (MSKCC-RC 0.78/+2%; Briganti (2012)-RC 0.77/-3%). Decision curve analysis (DCA) revealed a net benefit at threshold probabilities between 3% and 6% when TTSB was used. For prediction of EPE based on TTSB an inferior discrimination and variable calibration were observed (AUC/risk estimation: MSKCC-RC 0.71/+8% and Martini (2018)-RC 0.69/+2%) achieving a net benefit on DCA only at risk thresholds of >17%. Performance of RCs for prediction of LNI and EPE based on SB showed comparable results with a better performance in the DCA for LNI (risk thresholds 1-2%) and poorer performance for EPE (risk threshold >20%). This study is limited by its retrospective single-institution design. CONCLUSIONS The potentially more accurate grading ability of TTSB did not result in improved performance of preoperative RCs. Prediction tools for LNI proved clinical usefulness while RCs for EPE did not.
Collapse
Affiliation(s)
- Fabienne Lehner
- Department of Urology, University Hospital Zurich, Zurich, Switzerland
| | - Alessio Crippa
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Silvan Sigg
- Department of Urology, University Hospital Zurich, Zurich, Switzerland
| | - Daniel Eberli
- Department of Urology, University Hospital Zurich, Zurich, Switzerland
| | - Ashkan Mortezavi
- Department of Urology, University Hospital Zurich, Zurich, Switzerland
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Department of Urology, University Hospital Basel, Basel, Switzerland
| |
Collapse
|
2
|
Broeke NC, Peterson J, Lee J, Martin PR, Farag A, Gomez JA, Moussa M, Gaed M, Chin J, Pautler SE, Ward A, Bauman G, Bartha R, Scholl TJ. Characterization of clinical human prostate cancer lesions using 3.0-T sodium MRI registered to Gleason-graded whole-mount histopathology. J Magn Reson Imaging 2018; 49:1409-1419. [PMID: 30430700 DOI: 10.1002/jmri.26336] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/24/2018] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Overtreatment of prostate cancer (PCa) is a healthcare issue. Development of noninvasive imaging tools for improved characterization of prostate lesions might reduce overtreatment. PURPOSE To measure the distribution of tissue sodium concentration (TSC), proton T2 -weighted signal, and apparent diffusion coefficient (ADC) values in human PCa and to test the presence of a correlation between regional differences in imaging metrics and the Gleason grade of lesions determined from histopathology. STUDY TYPE Cross-sectional. SUBJECTS Ten men with biopsy-proven PCa. SEQUENCES/FIELD STRENGTH Sodium, proton T2 -weighted, and diffusion-weighted MRI data were acquired using Broad-Band 3D-Fast-Gradient-Recalled, 3D Cube (Isotropic 3D-Fast-Turbo-Spin-Echo acquisition) and 2D Spin-Echo sequences, respectively, with a 3.0T MR scanner. ASSESSMENT All imaging data were coregistered to Gleason-graded postprostatectomy histology, as the standard for prostate cancer lesion characterization. Regional TSC and T2 data were assessed using percent changes from healthy tissue of the same patient (denoted ΔTSC, ΔT2 ). STATISTICS Differences in ΔTSC, ADC, and ΔT2 as a function of Gleason score were analyzed for each imaging contrast using a one-way analysis of variance or a nonparametric t-test. Correlations between imaging data measures and Gleason score were assessed using a Spearman's ranked correlation. RESULTS Evaluation of the correlation of ΔTSC, ADC, and ΔT2 datasets with Gleason scoring revealed that only the correlation between ΔTSC and Gleason score was statistically significant (rs = 0.791, p < 0.01), whereas the correlations of ADC and ΔT2 with Gleason score were not (rs = -0.306, p = 0.079 and r s = -0.069, p = 0.699, respectively). In addition, all individual patients showed monotonically increasing ΔTSC with Gleason score. DATA CONCLUSION The results of this preliminary study suggest that changes in TSC, assessed by sodium MRI, has utility as a noninvasive imaging assay to accurately characterize PCa lesions. Sodium MRI may provide useful complementary information on mpMRI, which may assist the decision-making of men choosing either active surveillance or treatment. LEVEL OF EVIDENCE 1 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;49:1409-1419.
Collapse
Affiliation(s)
- Nolan C Broeke
- Department of Medical Biophysics, Western University, London, ON, Canada
| | - Justin Peterson
- Department of Medical Biophysics, Western University, London, ON, Canada
| | - Joseph Lee
- Department of Medical Biophysics, Western University, London, ON, Canada
| | - Peter R Martin
- Department of Medical Biophysics, Western University, London, ON, Canada
| | - Adam Farag
- Robarts Research Institute, Western University, London, ON, Canada
| | - Jose A Gomez
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Madeleine Moussa
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Mena Gaed
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Joseph Chin
- Department of Surgery, Western University, London, ON, Canada.,Department of Oncology, Western University, London, ON, Canada
| | - Stephen E Pautler
- Department of Surgery, Western University, London, ON, Canada.,Department of Oncology, Western University, London, ON, Canada
| | - Aaron Ward
- Department of Medical Biophysics, Western University, London, ON, Canada.,Department of Oncology, Western University, London, ON, Canada
| | - Glenn Bauman
- Department of Medical Biophysics, Western University, London, ON, Canada.,Department of Oncology, Western University, London, ON, Canada
| | - Robert Bartha
- Department of Medical Biophysics, Western University, London, ON, Canada.,Robarts Research Institute, Western University, London, ON, Canada.,Departments of Medical Imaging and Psychiatry, Western University, London, ON, Canada
| | - Timothy J Scholl
- Department of Medical Biophysics, Western University, London, ON, Canada.,Robarts Research Institute, Western University, London, ON, Canada.,Ontario Institute for Cancer Research, Toronto, ON, Canada
| |
Collapse
|
3
|
Demirel CH, Altok M, Davis JW. Focal therapy for localized prostate cancer: is there a "middle ground" between active surveillance and definitive treatment? Asian J Androl 2018; 21:240302. [PMID: 30178774 PMCID: PMC6337958 DOI: 10.4103/aja.aja_64_18] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 06/12/2018] [Indexed: 01/02/2023] Open
Abstract
In recent years, it has come a long way in the diagnosis, treatment, and follow-up of prostate cancer. Beside this, it was argued that definitive treatments could cause overtreatment, particularly in the very low, low, and favorable risk group. When alternative treatment and follow-up methods are being considered for this group of patients, active surveillance is seen as a good alternative for patients with very low and low-risk groups in this era. However, it has become necessary to find other alternatives for patients in the favorable risk group or patients who cannot adopt active follow-up. In the light of technological developments, the concept of focal therapy was introduced with the intensification of research to treat only the lesioned area instead of treating the entire organ for prostate lesions though there are not many publications about many of them yet. According to the initial results, it was understood that the results could be good if the appropriate focal therapy technique was applied to the appropriate patient. Thus, focal therapies have begun to find their "middle ground" place between definitive therapies and active follow-up.
Collapse
Affiliation(s)
- Cihan H Demirel
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Muammer Altok
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - John W Davis
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| |
Collapse
|
4
|
Calio B, Kasson M, Sugano D, Ortman M, Gaitonde K, Verma S, Sidana A. Multiparametric MRI: An Opportunity for Focal Therapy of Prostate Cancer. Semin Roentgenol 2018; 53:227-233. [DOI: 10.1053/j.ro.2018.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
5
|
Demirel HC, Davis JW. Multiparametric magnetic resonance imaging: Overview of the technique, clinical applications in prostate biopsy and future directions. Turk J Urol 2018; 44:93-102. [PMID: 29511576 PMCID: PMC5832385 DOI: 10.5152/tud.2018.56056] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 02/08/2018] [Indexed: 12/23/2022]
Abstract
Multiparametric magnetic resonance imaging (mpMRI) has managed to change the paradigms on prostate cancer detection and risk classification. The most clear-cut indication of mpMRI in guidelines is the patients with a history of negative biopsy/increasing prostate-specific antigen (PSA), and presence of additional findings supporting its use in non biopsied patients and active surveillance. mpMRI complements standard clinical exam, PSA measurements, and systematic biopsy, and will miss some tumors that lack enough size or change in tissue density. Use of mpMRI is likely to increase, and further developments in the technique will be important for safe adoption of focal therapy concepts. Here we present a brief summary about mpMRI and its use in detection, risk classification and follow-up of prostate cancer.
Collapse
|
6
|
Peters M, Piena MA, Steuten LM, van der Voort van Zyp JR, Moerland MA, van Vulpen M. Comparative cost-effectiveness of focal and total salvage 125I brachytherapy for recurrent prostate cancer after primary radiotherapy. J Contemp Brachytherapy 2016; 8:484-491. [PMID: 28115953 PMCID: PMC5241382 DOI: 10.5114/jcb.2016.64808] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 12/06/2016] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Focal salvage (FS) iodine 125 (125I) brachytherapy could be an effective treatment for locally radiorecurrent prostate cancer (PCa). Toxicity is often reduced compared to total salvage (TS) while cancer control can be maintained, which could increase cost-effectiveness. The current study estimates the incremental cost per quality-adjusted life year (QALY) of FS compared to TS. MATERIAL AND METHODS A decision analytic Markov model was developed, which compares costs and QALYs associated with FS and TS. A 3-year time horizon was adopted with six month cycles, with a hospital perspective on costs. Probabilities for genitourinary (GU) and gastrointestinal (GI) toxicity and their impact on health-related quality of life (SF-36) were derived from clinical studies in the University Medical Center Utrecht (UMCU). Probabilistic sensitivity analysis, using 10,000 Monte Carlo simulations, was performed to quantify the joint decision uncertainty up to the recommended maximum willingness-to-pay threshold of €80,000/QALY. RESULTS Focal salvage dominates TS as it results in less severe toxicity and lower treatment costs. Decision uncertainty is small, with a 97-100% probability for FS to be cost-effective compared to TS (€0-€80,000/QALY). Half of the difference in costs between FS and TS was explained by higher treatment costs of TS, the other half by higher incidence of severe toxicity. One-way sensitivity analyses show that model outcomes are most sensitive to utilities and probabilities for severe toxicity. CONCLUSIONS Focal salvage 125I brachytherapy dominates TS, as it has lower treatment costs and leads to less toxicity in our center. Larger comparative studies with longer follow-up are necessary to assess the exact influence on (biochemical disease free) survival and toxicity.
Collapse
Affiliation(s)
- Max Peters
- Department of Radiation Oncology, University Medical Center Utrecht, The Netherlands
- Both authors contributed equally to this research
| | - Marjanne A. Piena
- University of Twente, Enschede, The Netherlands
- Both authors contributed equally to this research
| | | | | | - Marinus A. Moerland
- Department of Radiation Oncology, University Medical Center Utrecht, The Netherlands
| | - Marco van Vulpen
- Department of Radiation Oncology, University Medical Center Utrecht, The Netherlands
| |
Collapse
|
7
|
Stone NN, Mouraviev V, Schechter D, Goetz J, Lucia MS, Smith EE, Crawford ED. Deflection Analysis of Different Needle Designs for Prostate Biopsy and Focal Therapy. Technol Cancer Res Treat 2016; 16:654-661. [PMID: 27708117 DOI: 10.1177/1533034616671007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE The biopsy needles currently used were designed for a transrectal biopsy and are known to experience significant deflection from the point of entry into the gland to the needle tip. METHODS Five designs were selected for testing: 18-gauge Bard, 15-gauge lancet tip needle with 12° vet-point cannula, and trocar tip needle with 12°, 15°, and 20° vet-point cannulas. The 15-gauge needle was designed to take a variable specimen sample between 20 and 60 mm, whereas the Bard needle specimen bed was fixed at 20 mm. The needles were bench tested on a spring-loaded platform and fired into gelatin matrix with modulus of elasticity similar to human prostate. RESULTS The Bard device with lancet tip needle deflected an average of 0.9 mm (range 0.3-1.3 mm) and 1.9° (range 0.6°-2.8°). Increasing needle diameter from 18-gauge Bard to 15-gauge variable with the same lancet tip needle design resulted in an average deflection across the 3 test lengths of 0.9 mm (range 0-2.0 mm) and 0.9° (range 0°-2.0°) with no significant difference. On the contrary, the use of the 3-point trocar tip needles with 12°, 15°, and 20° vet-point cannulas demonstrated significant reduction in the extent of deflection in both millimeters and degrees. There was no deflection at the 2- and 4-cm shots for both spring loads and preloads for the 3 vet tip angles tested. At 6 cm, the 20° vet tip performed the best. CONCLUSION We proposed a mechanism that provides more accurate prostate sampling by combining a 3-point trocar tip on the needle with a 20° vet tip on the cutting cannula. Using the phantom, mimicking prostate gland tissue density, no deflection was revealed between 20- and 60-mm biopsy lengths, which should permit a straight sample in the majority of prostate glands and improve cancer localization for focal therapy planning.
Collapse
Affiliation(s)
- Nelson N Stone
- 1 Department of Urology and Radiation Oncology, The Icahn School of Medicine at Mount Sinai, Mount Sinai, NY, USA
| | - Vladimir Mouraviev
- 2 Department of Urology, Bladder Health and Reconstructive Institute, Memorial Hospital Miramar, Miramar, FL, USA
| | | | | | - M Scott Lucia
- 4 Department of Pathology, University of Colorado Anschutz Medical Campus in Aurora, Aurora, CO, USA
| | - E Erin Smith
- 5 Department of Urology, University of Colorado Anschutz Medical Campus in Aurora, Aurora, CO, USA
| | - E David Crawford
- 5 Department of Urology, University of Colorado Anschutz Medical Campus in Aurora, Aurora, CO, USA
| |
Collapse
|
8
|
Single fraction multimodal image guided focal salvage high-dose-rate brachytherapy for recurrent prostate cancer. J Contemp Brachytherapy 2016; 8:241-8. [PMID: 27504134 PMCID: PMC4965505 DOI: 10.5114/jcb.2016.61067] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 06/11/2016] [Indexed: 02/08/2023] Open
Abstract
PURPOSE We present a novel method for treatment of locally recurrent prostate cancer (PCa) following radiation therapy: focal, multimodal image guided high-dose-rate (HDR) brachytherapy. MATERIAL AND METHODS We treated two patients with recurrent PCa after primary (#1) or adjuvant (#2) external beam radiation therapy. Multiparametric magnetic resonance imaging (mpMRI), choline, positron emission tomography combined with computed tomography (PET/CT), or prostate-specific membrane antigen (PSMA)-PET combined with CT identified a single intraprostatic lesion. Positron emission tomography or magnetic resonance imaging - transrectal ultrasound (MRI-TRUS) fusion guided transperineal biopsy confirmed PCa within each target lesion. We defined a PET and mpMRI based gross tumor volume (GTV). A 5 mm isotropic margin was applied additionally to each lesion to generate a planning target volume (PTV), which accounts for technical fusion inaccuracies. A D90 of 18 Gy was intended in one fraction to each PTV using ultrasound guided HDR brachytherapy. RESULTS Six month follow-up showed adequate prostate specific antygen (PSA) decline in both patients (ΔPSA 83% in patient 1 and ΔPSA 59.3% in patient 2). Follow-up 3-tesla MRI revealed regressive disease in both patients and PSMA-PET/CT showed no evidence of active disease in patient #1. No acute or late toxicities occurred. CONCLUSIONS Single fraction, focal, multimodal image guided salvage HDR brachytherapy for recurrent prostate cancer is a feasible therapy for selected patients with single lesions. This approach has to be evaluated in larger clinical trials.
Collapse
|
9
|
What tumours should we treat with focal therapy based on risk category, grade, size and location? Curr Opin Urol 2015; 25:212-9. [PMID: 25844714 DOI: 10.1097/mou.0000000000000170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
10
|
Roberts MJ, Chow CWK, Schirra HJ, Richards R, Buck M, Selth LA, Doi SAR, Samaratunga H, Perry-Keene J, Payton D, Yaxley J, Lavin MF, Gardiner RA. Diagnostic performance of expression of PCA3, Hepsin and miR biomarkers inejaculate in combination with serum PSA for the detection of prostate cancer. Prostate 2015; 75:539-49. [PMID: 25597828 DOI: 10.1002/pros.22942] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 11/11/2014] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND METHODS Here, we report on the evaluation of the diagnostic performance of ejaculate-derived PCA3, Hepsin, and miRNAs to complement serum PSA to detect prostate cancer. cDNA was prepared from 152 candidate specimens following RNA isolation and amplification for PSA, PCA3 and Hepsin qPCR, with 66 having adequate RNA for all three assays. Small RNA sequencing and examination of PCa-associated miRNAs miR-200b, miR-200c, miR-375 and miR-125b was performed on 20 specimens. We compared findings from prostate biopsies using D'Amico and PRIAS classifications and in relation to whole gland histopathology following radical prostatectomy. Multivariate logistic regression modeling and clinical risk (incorporating standard clinicopathological variables) were performed for all ejaculate-based markers. RESULTS While Hepsin alone was not of predictive value, the Hepsin:PCA3 ratio together with serum PSA, expressed as a univariate composite score based on multivariate logistic regression, was shown to be a better predictor than PSA alone of prostate cancer status (AUC 0.724 vs. 0.676) and risk, using D'Amico (AUC 0.701 vs. 0.680) and PRIAS (AUC 0.679 vs. 0.659) risk stratification criteria as classified using prostate biopsies. It was also possible to analyse a subgroup of patients for miRNA expression with miR-200c (AUC 0.788) and miR-375 (AUC 0.758) showing best single marker performance, while a combination of serum PSA, miR-200c, and miR-125b further improved prediction for prostate cancer status when compared to PSA alone determined by biopsy (AUC 0.869 vs. 0.672; P < 0.05), and risk (D'Amico/PRIAS) as well as by radical prostatectomy histology (AUC 0.809 vs. 0.690). For prostate cancer status by biopsy, at a sensitivity of 90%, the specificity of the test increased from 11% for PSA alone to 67% for a combination of PSA, miR-200c, and miR-125b. CONCLUSIONS These results show that use of a combination of different types of genetic markers in ejaculate together with serum PSA are at least as sensitive as those reported in DRE urine. Furthermore, a combination of serum PSA and selected miRNAs improved prediction of prostate cancer status. This approach may be helpful in triaging patients for MRI and biopsy, when confirmed by larger studies.
Collapse
Affiliation(s)
- Matthew J Roberts
- The University of Queensland, Centre for Clinical Research, Brisbane, Qld, Australia; Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Qld, Australia; The University of Queensland, Centre for Advanced Imaging, Brisbane, Qld, Australia
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Kruck S, Bedke J, Kaufmann S, Stenzl A. Advanced Imaging and Possible Focal Therapy for Prostate Cancer. CURRENT SURGERY REPORTS 2015. [DOI: 10.1007/s40137-014-0077-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Fröhner M, Wirth M. [Organ and function preservation in prostate cancer]. Urologe A 2014; 53:1295-301. [PMID: 25104234 DOI: 10.1007/s00120-014-3526-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Curative treatment for prostate cancer is associated with risks which may adversely influence quality of life. Furthermore, there is a considerable rate of overdiagnosis of tumors which would be non-life-threatening if left untreated. Efforts have been made to reduce overtreatment. DISCUSSION Beside the traditional conservative symptomatic management especially in elderly patients with meaningful comorbidity, several prostate-sparing or deferred treatment options are currently discussed. For all of them, insufficient data on efficacy and safety are available. RESULTS Because of the required long-term follow-up of large sample sizes, conclusive data will not become available in the near future. Therefore, these treatment options have to be considered experimental to a large degree. This applies both to focally ablative techniques and to active surveillance of prostate cancer in patients with a long further life expectancy. Only in carefully selected patients with favorable tumor-associated risk profiles and high risk of medium-term competing mortality may active surveillance be considered a valid and relatively safe treatment option.
Collapse
Affiliation(s)
- M Fröhner
- Klinik und Poliklinik für Urologie, Universitätsklinikum "Carl Gustav Carus" der Technischen Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland,
| | | |
Collapse
|