Prediction of early (30-day) and late (30-90-day) mortality after radical cystectomy in a comprehensive cancer centre over two decades.

BACKGROUND: Radical cystectomy (RC) is associated with substantial postoperative mortality. In this study, we analyzed early (30-day; 30 M) and late (30-90-day; 30-90 M) mortality after RC in a Dutch tertiary referral center and determined factors associated with 30 M, 30-90 M and 90-day mortality (90 M). PATIENTS AND METHODS: We identified 823 patients who underwent RC for bladder cancer in the Netherlands Cancer Institute between 1997 and 2017. Predictive factors for mortality were analyzed to identify patients with a higher mortality risk. Multivariate logistic regression analysis was performed to examine the influence of patient, surgical and histopathological variables on 30 M, 30-90 M and 90 M. RESULTS: Thirty-day mortality was 1.9% and 90 M was 6.0%. Multivariable analysis showed that age (OR 1.08, 95% CI 1.01-1.1, p = 0.002) and ASA 3-4 (OR 3.57, 95% CI 1.25-10.16, p = 0.002) were significant predictors of 30 M while higher ASA score (OR 2.9, 95% CI 1.31-6.5, p = 0.009) and higher pathological T stage (OR 8.8, 95% CI 1.9-40.4, p = 0.005) were associated with 30-90 M. Risk of 90 M was increased in patients with ASA 3-4 (OR 2.4, 95% CI 1.2-4.9, p = 0.01), pT3-4 (OR 3.1, 95% CI 1.27-7.57, p = 0.01) and positive LNs (OR 2.5, 95% CI 1.25-4.98, p = 0.009). CONCLUSIONS: Patient-related factors predicted 30 M whereas both patient-related and cancer-related factors predicted 30-90 M. This suggests that patient mix, i.e. patient- vs. cancer-related factors for 30 M and 30-90 M, should be taken into account if mortality rates are to be compared between hospitals.

Best practices in near-infrared fluorescence imaging with indocyanine green (NIRF/ICG)-guided robotic urologic surgery: a systematic review-based expert consensus.

PURPOSE: The aim of the present study is to investigate the impact of the near-infrared (NIRF) technology with indocyanine green (ICG) in robotic urologic surgery by performing a systematic literature review and to provide evidence-based expert recommendations on best practices in this field. METHODS: All English language publications on NIRF/ICG-guided robotic urologic procedures were evaluated. We followed the PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analyses) statement to evaluate PubMed®, Scopus® and Web of Science™ databases (up to April 2019). Experts in the field provided detailed pictures and intraoperative video-clips of different NIRF/ICG-guided robotic surgeries with recommendations for each procedure. A unique QRcode was generated and linked to each underlying video-clip. This new exclusive feature makes the present the first "dynamic paper" that merges text and figure description with their own video providing readers an innovative, immersive, high-quality and user-friendly experience. RESULTS: Our electronic search identified a total of 576 papers. Of these, 36 studies included in the present systematic review reporting the use of NIRF/ICG in robotic partial nephrectomy (n = 13), robotic radical prostatectomy and lymphadenectomy (n = 7), robotic ureteral re-implantation and reconstruction (n = 5), robotic adrenalectomy (n = 4), robotic radical cystectomy (n = 3), penectomy and robotic inguinal lymphadenectomy (n = 2), robotic simple prostatectomy (n = 1), robotic kidney transplantation (n = 1) and robotic sacrocolpopexy (n = 1). CONCLUSION: NIRF/ICG technology has now emerged as a safe, feasible and useful tool that may facilitate urologic robotic surgery. It has been shown to improve the identification of key anatomical landmarks and pathological structures for oncological and non-oncological procedures. Level of evidence is predominantly low. Larger series with longer follow-up are needed, especially in assessing the quality of the nodal dissection and the feasibility of the identification of sentinel nodes and the impact of these novel technologies on long-term oncological and functional outcomes.

Anatomical localization of radiocolloid tracer deposition affects outcome of sentinel node procedures in prostate cancer.

PURPOSE: Diagnostic imaging modalities have moderate sensitivity for the identification of lymph node (LN) metastases in prostate cancer (PCa) patients. Mapping the lymphatic drainage from the prostate can help to identify the LNs directly draining from the tumour (sentinel nodes (SNs)); the LNs stated to have the highest chance of containing metastatic cancer cells. Although the lymphatic drainage may differ between segments within the prostate, the location of the primary tumour is not routinely taken into account during peripheral zone-aimed tracer administration. This study evaluates whether linking the SN procedure to the primary cancer deposits increases the identification accuracy of lymphatic metastases. METHODS: Sixty-seven PCa patients, scheduled for robot-assisted laparoscopic prostatectomy (RALP) and extended lymph node dissection (ePLND) with subsequent SN biopsy, were included in this retrospective study. After injection of the hybrid tracer ICG-99mTc-nanocolloid in the prostate, SN mapping was performed based on lymphoscintigraphy and SPECT/CT. SNs were resected using a combination of radio- and fluorescence guidance. Pathology was used to determine the primary tumour location and metastatic spread. Fluorescence imaging of paraffin-embedded prostate tissue was used to determine the location of the tracer deposits in the prostate. This deposition was related to the primary tumour location, the lymphatic drainage pattern of the injected tracer, and the metastatic spread. RESULTS: In total 265 radioactive LNs (211 SNs and 54 higher-echelon nodes in 64 patients; 4.3 LNs per patient; IQR: 2-6) were identified. In three patients (4%) preoperative imaging did not allow identification of SNs. Tumour-positive SN visualization within the pelvis was shown to be influenced by intraprostatic location of tracer administration. This could be concluded from (1) a clear correlation between lymphatic drainage to the right or left side of the body and tracer deposition on the right or left side of the prostate, (2) visualization of a higher number of LNs after dorsal tracer deposition compared with ventral tracer deposition, (3) different drainage patterns observed for tracer deposition into the base or apex of the prostate, and (4) the indication that intratumoural tracer deposition increases the chance of visualizing nodal metastases compared with extratumoural tracer deposition. CONCLUSIONS: The correlation between the location of the tracer deposits, the location of the primary tumour, and the visualization of the (tumour-positive) SNs indicated that placement of tracer deposits is of influence on the visualized lymphatic drainage pattern. This suggests that tracer injection near or into the primary tumour site is beneficial for the identification of metastatic spread.

The best of both worlds: a hybrid approach for optimal pre- and intraoperative identification of sentinel lymph nodes.

PURPOSE: Hybrid image-guided surgery technologies such as combined radio- and fluorescence-guidance are increasingly gaining interest, but their added value still needs to be proven. In order to evaluate if and how fluorescence-guidance can help realize improvements beyond the current state-of-the-art in sentinel node (SN) biopsy procedures, use of the hybrid tracer indocyanine green (ICG)-99mTc-nancolloid was evaluated in a large cohort of patients. PATIENTS AND METHODS: A prospective trial was conducted (n = 501 procedures) in a heterogeneous cohort of 495 patients with different malignancies (skin malignancies, oral cavity cancer, penile cancer, prostate cancer and vulva cancer). After injection of ICG-99mTc-nanocolloid, SNs were preoperatively identified based on lymphoscintigraphy and SPECT/CT. Intraoperatively, SNs were pursued via gamma tracing, visual identification (blue dye) and/or near-infrared fluorescence imaging during either open surgical procedures (head and neck, penile, vulvar cancer and melanoma) or robot assisted laparoscopic surgery (prostate cancer). As the patients acted as their own control, use of hybrid guidance could be compared to conventional radioguidance and the use of blue dye (n = 300). This was based on reported surgical complications, overall survival, LN recurrence free survival, and false negative rates (FNR). RESULTS: A total of 1,327 SN-related hotspots were identified on 501 preoperative SPECT/CT scans. Intraoperatively, a total number of 1,643 SNs were identified based on the combination of gamma-tracing (>98%) and fluorescence-guidance (>95%). In patients wherein blue dye was used (n = 300) fluorescence-based SN detection was superior over visual blue dye-based detection (22-78%). No adverse effects related to the use of the hybrid tracer or the fluorescence-guidance procedure were found and outcome values were not negatively influenced. CONCLUSION: With ICG-99mTc-nanocolloid, the SN biopsy procedure has become more accurate and independent of the use of blue dye. With that, the procedure has evolved to be universal for different malignancies and anatomical locations.

(Cost-)effectiveness of an internet-based physical activity support program (with and without physiotherapy counselling) on physical activity levels of breast and prostate cancer survivors: design of the PABLO trial.

BACKGROUND: Higher levels of physical activity (PA) after treatment are associated with beneficial effects on physical and psychosocial functioning of cancer survivors. However, survivors often do not meet the recommended levels of PA. In order to promote PA, we developed a closed internet-based program. The aim of the study is to evaluate the (cost-)effectiveness of an internet-based PA-promotion program, alone or combined with physiotherapy counselling, compared to usual care, on PA-levels of breast or prostate cancer survivors. In this multicenter randomised controlled trial (RCT), breast or prostate cancer survivors who completed their primary treatment 3-12 months earlier, will be randomised to either 6-months access to a fully-automated internet-based intervention alone, an internet-based intervention plus remote support by a physiotherapist, or a control group. The intervention is based on the Transtheoretical Model and includes personalized feedback, information, video's and assignments. Additionally, in a second arm, physiotherapy counselling is provided through monthly scheduled and on-demand telephone calls. The control group will receive usual care and a leaflet with PA guidelines. METHODS: At baseline, 6 and 12 months, the primary outcome (PA) will be measured during 7 consecutive days by accelerometers. Secondary outcomes are self-reported PA, fatigue, mood, health-related quality of life, and costs. The group differences for primary and secondary outcomes will be analyzed using linear mixed models. DISCUSSION: If proven to be (cost)effective, this internet-based intervention, either alone or in combination with telephone support, will be a welcome addition to previous RCT's. TRIAL REGISTRATION: Netherlands trial register (NTR6911), Date of trial registration: December 21, 2017.

Differences in histopathological evaluation of standard lymph node dissections result in differences in nodal count but not in survival.

OBJECTIVE: To analyse whether the reported differences in nodal yield at pelvic lymph node dissection (PLND) for bladder cancer, between two hospitals, are reflected in the survival rates. PATIENTS AND METHODS: We assessed follow-up data of all 174 patients (mean age: 62.7, median follow-up: 3 years) who underwent PLND between 1 January 2007 and 31 December 2009 at two different hospitals. PLND was performed according to a standardized template by the same urologists for comparable bladder cancer patients. Mean number of reported lymph nodes was 16 at hospital A versus 28 at hospital B. We compared the overall survival (OS), disease-specific survival (DSS) and recurrence-free survival (RFS) between both cohorts and performed a multivariate analysis. RESULTS: The cumulative probability for 2-year OS, DSS and RFS for hospital A are 61, 64 and 54 %, versus 58, 58 and 53 % for hospital B, respectively. Kaplan-Meier survival curves did not reveal statistically significant differences between both groups (OS: p log-rank = 0.75, DSS: p log-rank = 0.56, and RFS: p log-rank = 0.80). Also after adjustment for pT stage and neoadjuvant chemotherapy, survival was not significantly different between hospital A and hospital B. CONCLUSION: Despite differences in lymph node yield in PLND specimens, this study reveals no significant differences in survival outcomes between both hospitals. Standardized histopathological methods should be agreed upon by pathologists before integrating nodal yield and subsequent lymph node density as indicators of the quality of surgery and as prognostic factors.

Patient-reported outcome measures compared to clinician reported outcomes regarding incontinence and erectile dysfunction in localized prostate carcinoma after robot assisted radical prostatectomy: Impact on management.

PURPOSE/ BACKGROUND: Patient-reported outcome measures (PROMs) are widely used after robot assisted radical prostatectomy (RARP) in order to evaluate the impact/burden of the treatment. The most bothersome side effects of RARP are urine incontinence (UI) and erectile dysfunction (ED). During the follow up consultations, clinicians report these side effects in interviewing patients. Our study examined the discrepancy between the PROMs and clinician report outcomes (CROs) and hypothesized that the disagreement could have an impact on the management of UI and ED. METHODS: Up to 1 year after RARP, UI and ED recovery of 312 men with localized and locally advanced prostate cancer were assessed using the International Consultation Incontinence Questionnaire Short-Form (ICIQ-SF) and the International Index of Erectile Function (IIEF-EF) and CROs by interview. Discrepancies between PROs and CROs were studied in light of treatment offered and management. RESULTS: The ICIQ-SF Score matched with CROs in all sum score categories except in ICIQ sum score 6 to 12; here the UI was underreported by clinicians in 58% and 59% of patients at 8 and 12 months (P < 0.001). Furthermore, at 8 and 12 months postoperatively, clinicians underreported UI in 29% and 23% of patients with ICIQ score 13-18 (P < 0.001). The clinician significantly over-reported the recovery of erectile function ("normal erection") (P < 0.001), especially in men with IIEF-EF sum score 6 to 16. Independently of ICIQ-SF/IIEF-EF scores, discrepancy between PROs and CROs did not affect rate of health care offered to patients. CONCLUSIONS: This is to our knowledge the first study that compared the PROs with clinician reported functional outcomes and the impact of discrepancies on the management of side effects of RARP in prostate cancer. Observed discrepancies between the PROs and CROs did not affect offered management and counseling of UI and ED.

Histopathological concordance between prostate biopsies and radical prostatectomy specimens-implications of transrectal and transperineal biopsy approaches.

BACKGROUND: This study aimed to evaluate the histopathological concordance rates between prostate biopsies and radical prostatectomy specimens according to the applied biopsy approach (transrectal or transperineal). METHODS: We studied patients who had been newly diagnosed with clinically significant prostate cancer and who underwent a radical prostatectomy between 2018 and 2022. Patients were included if they underwent a prebiopsy magnetic resonance imaging and if they had not been previously treated for prostate cancer. Histopathological grading on prostate biopsies was compared with that on radical prostatectomy specimens. Univariable and multivariable logistic regression analyses were performed to assess the effect of the applied biopsy approach on histopathological concordance. Additional analyses were performed to assess the effect of the applied biopsy approach on American Urological Association risk group migration, defined as any change in risk group after radical prostatectomy. RESULTS: In total, 1058 men were studied, of whom 49.3% (522/1058) and 50.7% (536/1058) underwent transrectal and transperineal prostate biopsies, respectively. Histopathological disconcordance was observed in 37.8% (400/1058) of men while American Urological Association risk group migration was observed in 30.2% (320/1058) of men. A transperineal biopsy approach was found to be independently associated with higher histopathological concordance rates (OR 1.33 [95% CI 1.01-1.75], p = 0.04) and less American Urological Association risk group migration (OR 0.70 [95% CI 0.52-0.93], p = 0.01). CONCLUSIONS: The use of a transperineal biopsy approach improved histopathological concordance rates compared to the use of a transrectal biopsy approach. A transperineal biopsy approach may provide more accurate risk stratification for clinical decision-making. Despite recent improvements, histopathologic concordance remains suboptimal and should be considered before initiating management.

Standard lymph node dissection for bladder cancer: significant variability in the number of reported lymph nodes.

PURPOSE: We compared the nodal yield after histopathological examination of extended bilateral pelvic lymph node dissection specimens for bladder cancer at 2 hospitals. Surgery at each hospital was done by the same 4 staff urologists using a standardized extended bilateral pelvic lymph node dissection template. MATERIALS AND METHODS: All consecutive patients with bladder cancer who underwent extended bilateral pelvic lymph node dissection from January 1, 2007 to December 31, 2009 were included in this study. Specimens were sent for pathological evaluation in a minimum of 2 packages per side. At the 2 pathology departments specimens were processed according to institutional protocols. RESULTS: A total of 174 patients with a mean age of 62.7 years were included in analysis. At hospital 1 a mean of 16 lymph nodes were found after dissection vs a mean of 28 reported at hospital 2 (p <0.001). No significant differences were found in the number of tumor positive lymph nodes (p = 0.65). Mean lymph node density at hospitals 1 and 2 was 9.3% and 3.9%, respectively (p = 0.056). CONCLUSIONS: Despite equal anatomical clearance by the same experienced surgeons we report a statistically significant difference between 2 pathology departments where the number of lymph nodes was evaluated after extended bilateral pelvic lymph node dissection for bladder cancer. Unless standardized methods are agreed on by pathologists, the number of reported lymph nodes as an indicator of surgical quality and lymph node density as a prognostic factor should be used cautiously.

Short-term outcome after cystectomy: comparison of two different perioperative protocols.

AIM: To compare the outcome of two perioperative protocols with respect to postoperative management of cystectomy patients. PATIENTS AND METHODS: Between June 2007 and November 2008, 85 consecutive patients with bladder cancer were treated with cystectomy and urinary diversion. Patients were operated in two hospitals by four urologic surgeons. In protocol A, patients were enterally fed via a postpyloric tube while the nasogastric tube (NGT) was removed directly after cystectomy and selective decontamination of the digestive tract was given until normal oral intake. In protocol B, postcystectomy management consisted of total parenteral nutrition by a central venous line and NGT removal after 24 h. Hospital stay and complications were compared between the two hospitals. RESULTS: More than half of all patients (52%) developed one or more complications within 30 days after surgery, 37% in protocol A and 71% in protocol B (p = 0.002). Higher ASA score and protocol type were the only factors significantly associated with early complications in both uni- and multivariate analyses. Length of stay was significantly shorter with protocol A as compared to protocol B, 13 days versus 19 days (p = 0.006). CONCLUSIONS: Cystectomy and urinary diversion is a procedure with considerable risk of complications. Enteral nutrition might be advantageous as compared to parenteral nutrition, showing fewer complications and shorter hospital stay. A high ASA score is associated with more early complications. Selective bowel decontamination may have an additional role in preventing infectious complications after cystectomy.

Functional outcomes rather than complications predict poor health-related quality of life at 6 months after robot-assisted radical prostatectomy.

The objective is to evaluate the effect of robot-assisted radical prostatectomy (RARP)-related postoperative complications on the 6-month postoperative health-related quality of life (HRQoL). A total of 1008 patients underwent a RARP with or without pelvic lymph node dissection (PLND) between 2012 and 2020 and were invited to complete questionnaires about HRQoL and functional outcomes (urinary incontinence (UI), erectile dysfunction (ED) and urinary complaints (UC)) before and 6 months after RARP. Patient characteristics and postoperative complications up to 90 days after surgery were prospectively recorded. Associations between complications and HRQoL/functional outcomes were assessed by multivariate linear regression analyses. In total, 528 patients (52.4%) were included in the analyses. Complications occurred in 165/528 (31.3%) patients, of which 30/165 (18.2%) had a Clavien-Dindo ≥ III complication. In multivariate regression analyses, postoperative complications were not significantly associated with postoperative HRQoL, UI and ED (p = 0.73, p = 0.72 and p = 0.95, respectively), but were significantly associated with a minor increase in UC (ß = 1.7, p < 0.001). More specifically, infectious and urological complications were significantly associated with an increase in UC (ß = 1.9, p < 0.001 and ß = 0.9, p = 0.004, respectively). The presence of UTI, in particular, was significantly associated with this minor increase (ß = 1.5, p = 0.002). Functional outcomes were all significantly associated with the HRQoL at 6 months postoperatively. No significant associations were found between postoperative complications and HRQoL at 6 months after RARP. However, worse functional outcomes were associated with a worse HRQoL at 6 months postoperatively. In addition, postoperative infectious and urological complications were significantly associated with a minor increase in UC.

Effects of and Lessons Learned from an Internet-Based Physical Activity Support Program (with and without Physiotherapist Telephone Counselling) on Physical Activity Levels of Breast and Prostate Cancer Survivors: The PABLO Randomized Controlled Trial.

BACKGROUND: We developed an Internet-based physical activity (PA) support program (IPAS), which is embedded in a patient portal. We evaluated the effectiveness and costs of IPAS alone (online only) or IPAS combined with physiotherapist telephone counselling (blended care), compared to a control group. METHODS: Breast or prostate cancer survivors, 3-36 months after completing primary treatment, were randomized to 6-months access to online only, blended care, or a control group. At baseline and 6-month post-baseline, minutes of moderate-to-vigorous PA (MVPA) were measured by accelerometers. Secondary outcomes were self-reported PA, fatigue, mood, health-related quality of life, attitude toward PA, and costs. (Generalized) linear models were used to compare the outcomes between groups. RESULTS: We recruited 137 survivors (participation rate 11%). We did not observe any significant between-group differences in MVPA or secondary outcomes. Adherence was rather low and satisfaction scores were low to moderate, with better scores for blended care. Costs for both interventions were low. CONCLUSIONS: Recruitment to the study was challenging and the interventions were less efficacious than anticipated, which led to lessons learned for future trials. Suggestions for future research are as follows: improved accessibility of the support program, increased frequency of support, and use of activity trackers.

Training novice robot surgeons: Proctoring provides same results as simulator-generated guidance.

To understand the influence of proctored guidance versus simulator generated guidance (SGG) on the acquisition dexterity skills in novice surgeons learning RAS (robot assisted surgery). Prospective non-blinded 3-arm randomised controlled trial (RTC). Exclusion criteria: previous experience in RAS or robotic surgery simulation. The participants were assigned to three different intervention groups and received a different form of guidance: (1) proctored guidance, (2) simulator generated guidance, (3) no guidance, during training on virtual reality (VR) simulator. All participants were asked to complete multiple questionnaires. The training was the same in all groups with the exception of the intervention part. Catharina Hospital Eindhoven, The Netherlands. A total of 70 Dutch medical students, PhD-students, and surgical residents were included in the study. The participants were randomly assigned to one of the three groups. Overall, all the participants showed a significant improvement in their dexterity skills after the training. There was no significant difference in the improvement of surgical skills between the three different intervention groups. The proctored guidance group reported a higher participant satisfaction compared to the simulator-generated guidance group, which could indicate a higher motivation to continue the training. This study showed that novice surgeons. Significantly increase their dexterity skills in RAS after a short time of practicing on simulator. The lack of difference in results between the intervention groups could indicate there is a limited impact of "human proctoring" on dexterity skills during surgical simulation training. Since there is no difference between the intervention groups the exposure alone of novice surgeons to the robotic surgery simulator could possibly be sufficient to achieve a significant improvement of dexterity skills during the initial steps of RAS learning.

Structured robot-assisted surgery training curriculum for residents in Urology and impact on future surgical activity.

To gain insight into the availability of training for robot assisted surgery (RAS) and the possibility to perform RAS during Dutch residency curriculum and to analyze the effects on surgical skills by the introduction of an advanced course in RAS for residents. A combination of a validated snap shot survey and a prospective cohort study. Structured advanced RAS training including virtual reality (VR) simulation, dry and wet lab facility at ORSI academy (Belgium). A snap-shot survey has been sent to all the residents and specialists in Urology graduated during the years 2017-2020 in Netherlands. Among residents, only last year residents (5th and 6th year) have been considered for the RAS training. Although most of the residents (88.2%) and young urologists (95%) were asked to follow a basic training or meet basic requirements before starting RAS, the requirements set by the educators were different from center to center. Some of them were required to attend only an online course on RAS, whereas others were asked to achieve threshold scores at VR simulator and participate in a standardized course at a training institute. The attendance to a structured advanced course in RAS showed a significant increase in surgical skills. Our study shows residents in urology are allowed to perform RAS during their residency though the criteria for starting RAS differ significantly amongst the teaching hospitals. To guarantee a basic level of skills and knowledge a structured, (multi-step) training and certification program for RAS should be implemented.

Pim1 regulates androgen-dependent survival signaling in prostate cancer cells.

INTRODUCTION: Pim1 overexpression was found to be associated with more advanced prostate cancer. Interleukin-6 (IL-6) induces Pim1 expression and is often found elevated after androgen-ablative therapy. METHODS: Tumor tissue from 31 selected prostate cancer patients and cell lines were studied immunohistochemically for c-myc, Pim1, STAT3, pSTAT3-Tyr705, and androgen receptor (AR) expression. The effect of Pim1 on androgen dependence in prostate cancer was studied in transgene cell lines. RESULTS: Pim1 expression was increased in high-grade prostate tumors (Gleason >7), irrespective of androgen status, was highest in hormone refractory prostate cancer and correlated to pSTAT3-Tyr705 expression levels. Co-expression of Pim1 and MYC was observed specifically after androgen ablation. Pim1 expression could be induced in LNCaP and PC3 cells by IL-6. Pim1 overexpression in PC3 and PNCaP increased the transcriptional activity of the AR at low levels of dihydrotestosterone. Consequently, Pim1 expression increased LNCaP cell survival specifically at castrate levels of androgen. CONCLUSIONS: Pim1 expression was increased in primary tumor samples after androgen ablation. Pim1 overexpression increased AR transcriptional activity in a ligand-dependent manner in prostate cancer cell lines, resulting in enhanced cell survival at castrate levels of androgen.

Nodal recurrence patterns on PET/CT after RTOG-based nodal radiotherapy for prostate cancer.

PURPOSE: Biochemical failure after external beam radiotherapy (RT) for node-positive prostate cancer (PCN+) frequently involves nodal recurrences, in most cases out of field. This raises the question if current RTOG-based elective nodal fields can still be considered optimal. Modern diagnostic tools like PSMA PET/CT and choline PET/CT can visualize nodal recurrences with unprecedented accuracy. We evaluated recurrence patterns on PET/CT after RT for PCN+, with the aim to explore options for improved nodal target definition. METHODS AND MATERIALS: Data of all patients treated with curative intent EBRT for PCN+ in NKI-AVL from 2008 to 2018 were retrospectively reviewed. EBRT comprised 70 Gy to the prostate or 66-70 Gy to the prostate bed, 60 Gy to involved nodes, and 52,5-56 Gy (46 Gy EQD2) to RTOG-based elective nodal fields, in 35 fractions. Locations of recurrences on PET/CT were noted, and nodal locations were correlated with the applied EBRT fields. RESULTS: 42 patients received PSMA (28) or choline (14) PET/CT at biochemical recurrence. 35 patients (83%) had a positive scan. At their first positive scan 17 patients had nodal metastasis, in some cases together with a local recurrence or distant disease. In-field nodal recurrences were uncommon (n = 3). Out-field nodal recurrences occurred more frequently (n = 14), with the majority (n = 12) just above the elective nodal field. These nodes were the single area of detectable failure in 6 patients (14%). CONCLUSIONS: Current RT with RTOG-based nodal fields for PCN+ provides good in-field tumour control, but frequent out-field nodal recurrences suggest missed microscopic locations. Expanding elective fields to include the aorta bifurcation may prolong recurrence-free survival. Future research must address whether the potential benefits of this strategy outbalance additional toxicity.

Intraoperative radioguidance with a portable gamma camera: a novel technique for laparoscopic sentinel node localisation in urological malignancies.

PURPOSE: Our aim was to assess the feasibility of intraoperative radioguidance with a portable gamma camera during laparoscopic sentinel node (SN) procedures in urological malignancies. METHODS: We evaluated the use of the intraoperative portable gamma camera in 20 patients: 16 patients with prostate carcinoma (PCC), 2 patients with renal cell carcinoma (RC) and 2 patients with testicular cancer (TC). Intra/peritumoural injection of (99m)Tc-nanocolloid ((99m)Tc) was followed by planar lymphoscintigraphy, SPECT/CT and marking of SN levels. Before laparoscopy a (125)I seed was fixed on the laparoscopic gamma probe as a pointer of SN seeking. The portable gamma camera was set to display the (99m)Tc signal for SN localisation and the (125)I signal for SN seeking. Matching of these signals on screen indicated exact SN localisation, and consequently this SN was removed. RESULTS: The mean injected dose was 218 MBq in PCC, 228 MBq in RC and 88 MBq in TC. Pelvic SN were visualised in all PCC patients, with uncommonly located SN in seven patients. SN metastases were found in seven patients (one in a uncommonly located SN). Both RC patients and TC patients had para-aortic SN, which were all tumour free. A total of 59 SN were removed. The portable gamma camera enabled real-time SN display/identification in 18 patients (90%). CONCLUSION: The use of a portable gamma camera in combination with a laparoscopic gamma probe incorporates intraoperative real-time imaging with improved SN identification in urological malignancies. This procedure might also be useful for SN identification of other deep draining malignancies.

Robot assisted laparoscopic prostatectomy: initial tips and tricks.

Robot assisted laparoscopic prostatectomy (RALP) has become a widely accepted and applied surgical method of localized prostate cancer treatment. Initial studies suggest a shorter learning curve for RALP when compared to conventional laparoscopic prostatectomy. Although dexterity for the RALP procedure is increased by the da Vinci surgical robotic system compared to laparoscopic approaches, the anatomical and technical approaches to prostatectomy still require considerable experience in anatomical variations to become proficient and improve oncological and surgical approaches. Several aspects with respect to that can be recognized in the early phases of training. The following aspects helped the author in his initial 150 cases to improve surgical skills: use intraoperative transrectal ultrasound for bladder neck recognition, record and review surgical procedures, experiment with port positioning, training of table assistance. The more recent da Vinci surgical robot systems allow for new dimensions in surgical approaches with particular intraoperative imaging modalities not earlier so easy accessible during surgery. These properties render robot procedures appealing for the now-a-days more and more image-guided approach to surgery.

A prediction model relating the extent of intraoperative fascia preservation to erectile dysfunction after nerve-sparing robot-assisted radical prostatectomy.

Robot-assisted radical prostatectomy (RARP) is performed in patients with prostate cancer. Unfortunately, 10-46% of patients may still suffer from limited erectile function (EF) after RARP. This study aimed to develop a prediction model based on the extent of fascia preservation (FP) and postoperative EF after RARP. A previously developed FP score quantizing the extent and regions of nerve-preservation was determined in a cohort of 1241 patients who underwent RARP. The predictive value of the FP score for post-prostatectomy EF (following the international index erectile function (IIEF) score, EF domain) was analyzed. To increase the predictive value of the scoring system, the FP regions were related to postoperative EF, nerve distribution and co-morbidity factors. Finally, a prediction model for EF was developed based on the studied cohort. When corrected for the preoperative IIEF-EF, the FP score was shown to be a significant denominator for IIEF (p = 2.5 × 10- 15) with an R2 of 35%. Variable selection performed using the Akaike information criterion led to a final prediction model for postoperative IIEF after nerve-preservation based on the FP score. Furthermore, patient's age, preoperative IIEF score, CCIS and use of clips for nerve sparing were significantly associated with postoperative IIEF-EF. More anterior fascia preservation was correlated with better EF outcome and age was a strong independent predictor of EF outcome. In older men, the relative benefit of more extensive fascia preservation was at least similar to younger men, despite a lower baseline IIEF-EF score. Quantitative nerve-sparing FP scoring could be related to the postoperative IIEF-EF and integrated into a multivariate prediction model, which includes with age, use of surgical clips, the Charlson Comorbidity Index Score (CCIS), and preoperative IIEF-EF. When further validated the prediction model could provide patients and care-givers a qualitative estimation of EF outcome after RARP.

Linking surgical skills to postoperative outcomes: a Delphi study on the robot-assisted radical prostatectomy.

OBJECTIVE: To develop an assessment instrument for the evaluation of surgical videos to elucidate the association between surgical skills and postoperative outcomes after a robot-assisted radical prostatectomy (RARP). DESIGN: A Delphi study consisting of two consecutive online surveys and a consensus group meeting. SETTING: Urology departments of general, teaching and university hospitals in the Netherlands. PARTICIPANTS: All Dutch urologists with a specialization in RARP. RESULTS: Of 18 invited experts, 12 (67%) participated in the first online survey. In the second round, 9 of the 18 invited experts participated (50%). The Delphi meeting was attended by 5 of the 18 (27%) invited experts. The panel identified seven surgical steps with a possible association to postoperative outcomes. The experts also expected an association between adverse postoperative outcomes and the frequency of camera removals, the number of stitches placed, the amount of bleeding, and the extent of coagulation. These factors were incorporated into an assessment instrument. CONCLUSIONS: Experts in the field of RARP achieved consensus on 7 surgical steps and 4 aspects of the RARP procedure that may be related to adverse postoperative outcomes. The resulting assessment instrument will be tested in future research to determine its validity.