Predicting individual outcomes after radical cystectomy in urothelial variants with Cancer of the Bladder Risk Assessment (COBRA) score.

OBJECTIVE: To validate the Cancer of the Bladder Risk Assessment (COBRA) score in patients with urothelial variants. METHODS: Epidemiological, clinical, radiological, and anatomopathological data were collected from patients with urothelial carcinoma who underwent radical cystectomy at the Institute of Cancer of São Paulo between May 2008 and December 2022. Patients with the presence of at least 10% of any urothelial variants in the radical cystectomy specimens' anatomopathological exam were included in the study. The COBRA score and derivatives were applied and correlated with oncological outcomes. RESULTS: A total of 680 patients [482 men (70.9%) and 198 women (29.1%)]; 66 years (IQR 59-73) underwent radical cystectomy for bladder tumor, and of these patients, a total of 167 patients presented any type of urothelial variant. The median follow-up time was 28.77 months (IQR 12-85). The three most prevalent UV were squamous differentiation (50.8%), glandular differentiation (31.3%), and micropapillary differentiation (11.3%). The subtypes with the worst prognosis were sarcomatoid with a median survival of 8 months (HR 1.161; 95% CI 0.555-2.432) and plasmacytoid with 14 months (HR 1.466; 95% CI 0.528-4.070). The COBRA score for patients with micropapillary variants demonstrated good predictive accuracy for OS (log-rank P = 0.009; 95% IC 6.78-29.21) and CSS (log-rank P = 0.002; 95% IC 13.06-26.93). CONCLUSIONS: In our study, the COBRA score proved an effective risk stratification tool for urothelial histological variants, especially for the micropapillary urothelial variant. It may be helpful in the prognosis evaluation of UV patients after radical cystectomy.

Robotic-assisted approaches to urachal carcinoma: A comprehensive systematic review of the safety and efficacy outcomes.

Introduction: Surgical intervention is the treatment of choice in patients with urachal carcinoma. Due to complications and to reduce hospital stay from open surgery, minimally invasive approaches are desirable. Nowadays, robotic-assisted surgery has become increasingly popular, and robot-assisted cystectomy can be performed in patients with urachal carcinoma with low complication rates. Methods: We performed a systematic review to search for studies that evaluated patients who underwent robotic-assisted surgery for urachal carcinoma. The outcomes of interest were the type of cystectomy performed, whether there was umbilicus resection, total operative time, console time, intraoperative complications, estimated blood loss, postoperative complications, time of hospitalisation, positive surgical margins and the presence of documented tumour recurrence. Results: In this study, we evaluated three cohorts comprising a total of 21 patients. The median follow-up period ranged from 8 to 40 months. Medium age was between 51 and 54 years, with a majority (63.1%) being male. One patient (5.2%) underwent a radical cystectomy, and 19 patients (94.7%) underwent to partial cystectomy. Umbilical resections were performed in all cases, and pelvic lymphadenectomy in 14 cases (73.6%). Recurrence occurred in three patients at a median of 17 months postoperation, two cases in the trocar insertion site. Additionally, there was one death, which was attributed to postoperative cardiovascular complications. Conclusion: Robotic-assisted partial cystectomy has a low incidence of adverse outcomes in patients with urachal carcinoma. Controlled studies, ideally randomised, are warranted to establish the comparative efficacy and safety of the robotic-assisted cystectomy approach relative to open surgery.

Scoring system for prediction of overall survival in patients with renal cell carcinoma T3aN0M0.

Objective: We aim to create a new score to predict postoperative overall survival in patients with nonmetastatic T3aN0 renal cell carcinoma. Methods: We reviewed the clinical data of adult patients who underwent radical nephrectomy for renal cell carcinoma between December 2007 and January 2022 in a single tertiary oncological institution. Clinical characteristics, clinical-pathological staging and histopathological characteristics were analysed. Survival analyses were determined using the Kaplan-Meier curve. A nomogram was established using Cox proportional hazard regression to identify the prognostic factors affecting the overall survival. The area under the curve, calibration curves and decision curve analysis were used to evaluate prognostic efficacy. Results: We analyzed 362 patients classified as pT3aN0M0 stage with a median follow-up of 40 months. According to Cox univariate and multivariate analyses, weight loss greater than 5% in 6 months before surgery, stage V chronic kidney disease after radical nephrectomy, sarcomatoid pattern, and coagulative tumor necrosis were identified as predictors of overall survival. We developed a score and performed internal and external validation. The time-dependent receiver operating characteristic curve, area under the curve value and calibration curve analysis showed good prediction ability of the score. The nomogram can effectively predict and stratify overall survival after radical nephrectomy in patients with pT3aN0M0 renal cell carcinoma. Conclusion: Patients with pT3aN0MO renal cell carcinoma exhibited different characteristics, and those with unfavourable characteristics deserve greater attention during follow-up. This nomogram provides an accurate prediction of overall survival after radical nephrectomy.

Holmium Laser Resection of Large Bladder Tumors: Technique Description, Feasibility, and Histopathological Quality Analysis.

BACKGROUND: The HoLERBT (Holmium Laser En-bloc Resection of Bladder Tumors) has emerged as an alternative to classical TURBT (Transurethral Resection of Bladder Tumor). Recent randomized trial and meta-analysis corroborate with the benefits in pathological analysis, perioperative and long-term oncological outcomes.1-3 However, the treatment of large tumors and the technique of extraction from the bladder is a problem to be overcome.1,4 OBJECTIVE: To describe the laser resection of bladder tumors and demonstrate the feasibility of this procedure even for large tumors throughout a series of cases. It is also discussed the quality of the histopathological analysis. METHODS: A series of 8 cases randomized selected to be the pilot for a trial comparing TURBT and HoLERBT in large tumors (>3 cm) in progress was analyzed (Brazilian Registry of Clinical Trials number RBR-67npwrk). The perioperative data and 1-year outcomes were assessed and the quality of histopathological analysis after morcellation was evaluated in terms of histopathology, grade, and stage. The entire procedure of one case is shown in a step-by-step video. RESULTS: The mean follow-up was 12.6 months. The mean age was 59.6 (42-85) years, and the mean tumor size was 4.7 (4-8) cm. All the resections were En-bloc. There were 2 cases of NMIBC, 4 cases of MIBC, 1 paraganglioma, and 1 adenocarcinoma. The histopathological analysis confirmed the presence of detrusor muscle layer and accurate diagnosis and staging in all cases (100%). There were no perioperative Clavien-Dindo > 1 complications, no blood transfusion, and no bladder perforations. The histopathology analysis reveals excellent quality without artifacts of fulguration. CONCLUSION: The holmium laser resection followed by morcellation of large bladder tumors is a feasible procedure. No complications occurred in our series of cases and all cases provided excellent material for histopathological analysis.