Contemporary outcomes of patients undergoing robotic-assisted radical cystectomy:A comparative analysis between intracorporeal ileal conduit and neobladder urinary diversions

Objective We aimed to compare perioperative and oncologic outcomes for patients undergoing robotic-assisted radical cystectomy(RARC)with intracorporeal ileal conduit(IC)and neobladder(NB)urinary diversion.Methods Patients undergoing RARC with intracorporeal urinary diversion between January 2017 and January 2022 at the Icahn School of Medicine at Mount Sinai,New York,NY,USA were indexed.Baseline demographics,clinical characteristics,perioperative,and oncologic outcomes were analyzed.Survival was estimated with Kaplan-Meier plots.Results Of 261 patients(206[78.9%]male),190(72.8%)received IC while 71(27.2%)received NB diversion.Median age was greater in the IC group(71[interquartile range,IQR 65-78]years vs.64[IQR 59-67]years,p<0.001)and BMI was 26.6(IQR 23.2-30.4)kg/m^(2).IC group was more likely to have prior abdominal or pelvic radiation(15.8%vs.2.8%,p=0.014).American Association of Anesthesiologists scores were comparable between groups.The IC group had a higher proportion of patients with pathological tumor stage 2(pT2)tumors(34[17.9%]vs.10[14.1%],p=0.008)and pathological node stages pN2-N3(28[14.7%]vs.3[4.2%],p<0.001).The IC group had less median operative time(272[IQR 246-306]min vs.341[IQR 303-378]min,p<0.001)and estimated blood loss(250[150-500]mL vs.325[200-575]mL,p=0.002).Thirty-and 90-day complication rates were 44.4%and 50.2%,respectively,and comparable between groups.Clavien-Dindo grades 3-5 complications occurred in 27(10.3%)and 34(13.0%)patients within 30 and 90 days,respectively,with comparable rates between groups.Median follow-up was 324(IQR 167-552)days,and comparable between groups.Kaplan-Meier estimate for overall survival at 24 months was 89%for the IC cohort and 93%for the NB cohort(hazard ratio 1.23,95%confidence interval 1.05-2.42,p=0.02).Kaplan-Meier estimate for recurrence-free survival at 24 months was 74%for IC and 87%for NB(hazard ratio 1.81,95%confidence interval 0.82-4.04,p=0.10).Conclusion Patients undergoing intracorporeal IC urinary diversion had higher postoperative cancer stage,increased nodal involvement,similar complications outcomes,decreased overall survival,and similar recurrence-free survival compared to patients undergoing RARC with intracorporeal NB urinary diversion.

Laparoscopic Radical Cystectomy in a Low-Middle Income Country: A 5-Year Review of a Single Institution;Operative Data, Oncologic Results and Morbidity

Introduction and Objective: Laparoscopic radical cystectomy (LRC) is an alternative to open approach with lower morbidity and better oncologic outcome. We aim to share our experience on laparoscopic radical cystectomy and to evaluate our morbidity and oncological outcome in our settings. Methodology: An observational study in the Douala Medico-Surgical Urology Centre on 5 patients who underwent laparoscopic cystectomy with or without lymph node dissection and external urine diversion between April 2014 to July 2016 was conducted. The overall survival rate was subsequently estimated. Results: Four men and one woman underwent laparoscopic radical cystectomy during the 5-year study period with a mean age of 54.5-year-old. Three patients were submitted to ileal conduits, one to neobladders, and one patient to uretero-cutaneostomies. The mean operative time was 300 ± 17 minutes and the mean length of hospital stay was 9 ± 3 days. Three patients had minor complications according to Clavien and Dindon Classification treated conservatively without need for further operation. Four patients had transitional cell carcinoma and one Squamous cell carcinoma types. Everyone had negative resection margin while only two had negative lymph node. The median survival years in our study was 2.5 years, the overall survival rates at 2 years were 60%, 40% at 3 years and 20 at 5years. 2 patients die after one year due to renal failure and intercurrent disease. Conclusion: Laparoscopic radical cystectomy carried lower morbidity and cancerological outcome compare to open surgery making it a good alternative for bladder oncologic surgery.

Robtic-assisted radical cystectomy:Literature review

Radical cystectomy(RC)with pelvic lymph node dissection(PLND)is the standard treatment for localized muscle-invasive bladder cancer(MIBC)and non-muscle-invasive bladder cancer(NMIBC)with recurrence or high risk of progression.Also,the robotic approach to this type of surgery is well established in the literature.Our objective is to summarize in this manuscript the most relevant articles related to the robotic-assisted radical cystectomy for prostate cancer.We performed a literature review of articles describing the robotic approach to RC in patients with bladder cancer.Also,we described the procedure since the patient selection until the bladder removal.The reconstructive techniques were not included in this review.Twenty-five articles were used to divide our manuscript into key points such as preoperative patient selection and protocols,surgical technique,pathology report,oncological outcomes,complication rates,and quality of life after the procedure.Robotic-assisted radical cystectomy is feasible and safe with satisfactory oncological outcomes.The robotic approach is related to lower blood loss and fewer transfusion rates.However,when compared to open surgery,the use of this technology increases the operative time.

Does Postoperative Rehabilitation for Radical Cystectomy Call for Enhanced Recovery after Surgery?A Systematic Review and Metaanalysis

The aim of this review was to systematically compare the outcomes of enhanced recovery after surgery(ERAS)with standard care(SC)after radical cystectomy.We performed a systematic search of PubMed,Ovid?Web of Science,and the Cochrane Library to identify studies published until September 2017 which involved a comparison of ERAS and SC.A meta-analysis was performed to assess the outcomes of ERAS versus SC.Sixteen studies including 8 prospective and 8 retrospective trials met the eligibility criteria.A total of 2100 participants were assigned to ERAS(1258 cases)or SC(842 cases).The time to first flatus passage[WMD=-0.95 days,95%Cl(-1.50,-0.41),P=0.0006],time until return to a regular diet[WMD=-2.15 days,95%Cl(-2.86,—1.45),P<0.00001]and the length of hospital stay[WMD=-3.75 days,95%Cl(-5.13,-2.36),P<0.00001]were significantly shorter,and the incidence of postoperative complications[OR=0.60,95%Cl(0.44,0.83),P=0.002],especially postoperative paralytic ileus[OR=0.43,95%Cl(0.30,0.62),P<0.00001]and cardiovascular complications[OR=0.28,95%Cl(0.09,0.90),P=0.03]was significantly lower in the ERAS group than those in the SC group.This meta-analysis demonstrated that ERAS was associated with a shorter time to first flatus passage,return of bowel fimction,and the length of hospital stay than SC in patients undergoing radical cystectomy,as well as a lower rate of postoperative complications,especially paralytic ileus and cardiovascular complications.

Pretreatment neutrophil-to-lymphocyte ratio predicts worse survival outcomes and advanced tumor staging in patients undergoing radical cystectomy for bladder cancer

Objective:To determine the role of neutrophil-to-lymphocyte ratio(NLR)in prognosticating survival outcomes in patients with advanced/metastatic urothelial bladder cancer.Methods:We retrospectively reviewed 84 patients undergoing radical cystectomy(RC)for UCB from January 2002 to June 2012.NLR was computed(median:5 days)prior to surgery.No patients received neoadjuvant chemotherapy.NLR was analyzed as a continuous variable and a cut-off point of 2.7 was obtained,with a statistical receiver operating characteristics of 0.74.KaplaneMeier curves,multivariate Cox proportional hazard and logistics regression models were used to predict NLR association with survival outcomes.Results:The median follow-up period was 30.1 months(range:3.2e161.7)owing to high recurrence rate and subsequent mortalities,compared to the median 64.7 months in patients alive at the end of study period.NLR
2.7 was associated with worse survival outcomes(5-year disease-specific survival:22%vs 58%,p Z 0.017,95%CI:1.193e6.009;5-year overall survival:23%vs 60%,p Z 0.008,95%CI:1.322e6.147).Furthermore,on multivariate analyses,higher NLR was independently associated with higher recurrence rate(p Z 0.007,HR Z6.999,95%CI:1.712e28.606),higher T staging(p Z 0.021,HR Z 3.479,95%CI:1.212e9.990)and lymph node involvement(p Z 0.009,HR Z 4.534,95%CI:1.465e14.034).

Current status of laparoscopic and robotassisted nerve-sparing radical cystectomy in male patients

During radical cystectomy(RC),the neurovascular bundles are easily removed or damaged,leading to varying rates of incontinence and erectile dysfunction.The nervesparing technique was developed to preserve urinary and erectile function.The adoption of laparoscopic and robot-assisted technology has improved visualization and dexterity of pelvic surgeries,thus facilitate the nerve-sparing technique.Although nerve-sparing RC is technically similar with nerve-sparing radical prostatectomy,there are still some anatomical differences.There are mainly three different types of nerve-sparing techniques.Pelvic lymph node dissection(PLND)is another important factor to influence erectile function and urinary continence.Nerve-sparing laparoscopic radical cystectomy(LRC)and robot-assisted radical cystectomy(RARC)may be an optimal treatment choice in well-selected younger patients with lowvolume,organ-confined disease.We should attempt to do,whenever possible,a nerve-sparing cystectomy at least on oneside.However,due to the need of a well-refined surgical technique,nerve-sparing LRC and RARC is now being performed only by experienced urological surgeons.

Segmental ureteroileal conduit resection for the treatment of distal upper urinary tract recurrence of bladder cancer fol lowing cystectomy

Segmental ureterectomy is less invasive than radical nephroureterectomy and results in nephron preservation and satisfactory tumor control.This study was to determine the feasibility of segmental ureteroileal conduit resection(SUICR) for patients with distal upper urinary tract recurrence of bladder cancer following radical cystectomy.Four patients with high-grade distal upper urinary tract recurrence underwent SUICR 15-108 months after radical cystectomy.The surgical technique details of SUICR,operative results,and follow-up outcomes are reported.The median operation time was 280 min,and estimated blood loss was less than 100 ml One patient suffered from ileus 5 days after surgery and was managed conservatively.Histopathologic evaluation showed high-grade stages pTa-pT1 diseases for these patients,and ureteral margins were all negative.No patient suffered from tumor recurrence,with a median follow-up of 39 months.SUICR preserved the ipsilateral renal unit and conformed to oncological principles during surgery.The oncological outcome was satisfactory for these properly selected patients.This technique provides a valid alternative to nephroureterectomy for patients with imperative indications and high-grade upper urinary tract recurrence of bladder cancer following radical cystectomy.

Radical cystectomy for bladder cancer: oncologic outcome in 271 Chinese patients

Few large scale studies have reported the oncologic outcome of radical cystectomy for treating bladder cancer in China; hence, we lack long-term prognostic information. The aim of the current study was to determine the survival rate and prognostic factors of patients who underwent radical cystectomy for bladder cancer in a Chinese medical center. We retrospectively analyzed clinicopathologic data from 271 bladder cancer patients who underwent radical cystectomy between 2000 and 2011. Univariate and multivariate analyses were conducted to identify independent prognostic predictors for this cohort. Median follow-up was 31.7 months(range, 0.2–139.1 months). Thirty-day mortality was(1.4%). The 5-year recurrence-free survival, cancer-specific survival(CSS), and overall survival rates were 61.6%, 72.9%, and 68.0%, respectively. The 5-year CSS rates of patients with T1–T4 disease were 90.7%, 85.0%, 51.0%, and 18.0%, respectively. Patients with organ-confined disease had a higher 5-year CSS rate than those with extravesical disease(81.4% vs. 34.9%, P < 0.001). For the 38 patients(14%) with lymph node involvement, the 5-year CSS rate was 27.7%—significantly lower than that of patients without lymph node metastasis(P < 0.001). The 5-year CSS rate was much higher in patients with low grade tumor than in those with high grade tumor(98.1% vs. 68.1%, P < 0.001). Multivariate Cox regression showed that patient age(hazard ratio, 2.045; P = 0.013) and T category(hazard ratio, 2.213; P < 0.001) were independent predictors for CSS. These results suggest that radical cystectomy is a safe and effective method for treating bladder cancer in Chinese patients. Old age and high T category were associated with poor prognosis in bladder cancer patients who underwent radical cystectomy.

Robot-assisted laparoscopic radical cystectomy with complete intracorporeal urinary diversion

Robot-assisted radical cystectomy with intracorporeal urinary diversion(RARCICUD)has only recently been explored as a viable surgical option for patients with muscle-invasive bladder cancer seeking satisfactory oncologic control while benefiting from minimally invasive surgical techniques.Inspired by earlier open and laparoscopic work,initial descriptions of RARC-ICUD were published in 2003,and have since been followed by multiple larger case series which have suggested promising outcomes for our patients.However,the rate of adoption has remained relatively slow when compared to other robotassisted procedures such as the radical prostatectomy,likely owing to longer operative times,operative complexity,costs,and uncertainty regarding oncologic efficacy.The operative technique for RARC-ICUD has evolved over the past decade and several high-volume centers have shared tips to improve efficiency and make the operation possible for a growing number of urologists.Though there are still questions regarding economic costs,effectiveness,and generalizability of outcomes reported in published data,a growing dataset has brought us ever closer to the answers.Here,we present our current operative technique for RARC-ICUD and discuss the state of the literature so that the urologist may hold an informed discussion with his or her patients.

Survival after radical cystectomy for bladder cancer:Multicenter comparison between minimally invasive and open approaches

Objective:To investigate oncological outcomes in patients with bladder cancer who underwent minimally invasive radical cystectomy(MIRC)or open radical cystectomy(ORC).Methods:We identified patients with bladder cancer who underwent radical cystectomy(RC)in 13 centers of the Chinese Bladder Cancer Consortium(CBCC).Perioperative outcomes were compared between MIRC and ORC.The influence of surgical approaches on overall survival(OS)and cancer-specific survival(CSS)in the entire study group and subgroups classified according to pathologic stage or lymph node(LN)status was assessed with the log-rank test.Multivariable Cox proportional hazard models were used to evaluate the association among OS,CSS and risk factors of interest.Results:Of 2098 patients who underwent RC,1243 patients underwent MIRC(1087 laparoscopic RC and 156 robotic-assisted RC,respectively),while 855 patients underwent ORC.No significant differences were noted in positive surgical margin rate and 90-day postoperative mortality rate.MIRC was associated with less estimated blood loss,more LN yield,higher rate of neobladder diversion,longer operative time,and longer length of hospital stay.There was no significant difference in OS and CSS according to surgical approaches(pZ0.653,and 0.816,respectively).Subgroup analysis revealed that OS and CSS were not significantly different regardless of the status of extravesical involvement or LN involvement.Multivariable Cox regression analyses showed that the surgical approach was not a significant predictor of OS and CSS.Conclusions:Our study showed that MIRC was comparable to conventional ORC in terms of OS and CSS.

Late upper urinary tract urothelial carcinoma following radical cystectomy,presenting as page kidney

Dear Editor,We are describing a rare case presenting with page phenomenon,9 years post radical cystectomy for muscle invasive bladder cancer.Page kidney was developed secondary to a late recurrent urothelial tumour in the left renal pelvis.Our case is a fifty-seven-year-old gentleman presented with poorly controlled hypertension and left dull aching loin pain.His blood pressure(BP)was 180/80 mmHg at diagnosis and was down to 150/80 mmHg using angiotensin converting enzyme(ACE)inhibitor and beta blocker medications.He underwent a radical cystectomy(RC)and ileal conduit urinary diversion 9 years ago.Pathology of his cystectomy specimen was localized urothelial carcinoma with negative resection margin and negative lymph nodes(T2N0M0).Examination showed a palpable mobile mass in the left hypochondrium.

Clinicopathological Analysis of Patients with Nonmuscle-Invasive Bladder Cancer Who Underwent Radical Cystectomy

Objectives: Surgical specimens obtained at the time of the last transurethral resection of bladder tumor (TURBT) for patients with nonmuscle-invasive bladder cancer (NMIBC) who underwent radical cystectomy were retrospectively evaluated in order to investigate the relationship between pathological variation and upstaging of NMIBC. Methods and Materials: Twenty patients (19 men, 1 woman;aged 69.4 ± 12.1 (mean ± SD) years) diagnosed with NMIBC underwent radical cystectomy during follow-up. Results: Five of the 20 patients (25%) had pathological upstaging in the radical cystectomy specimens. There was a statistical association between pathological upstaging and cancer death (p = 0.002). There were three patterns of pathological variation in the upstaged specimens: 1) in patients with BCG-resistant NMIBC, urothelial carcinoma invaded through the lamina propria;2) urothelial carcinoma showed diffuse invasion beyond the deep lamina propria, and the cancer cells had infiltrated as single cells and formed nodules;3) TURBT specimens showed a micropapillary variant. Conclusions: Since these pathological variations correlated with pathological upstaging, they may provide an indication for cystectomy in NMIBC patients.

Application of Intrafascial Neurovascular Bundle Spare Technique in Radical Cystectomy

Objective: To investigate the significance of intrafascial neurovascular bundle spare technique in radical cystectomy. Methods: Between March 2010 and December 2011, a total of 26 bladder cancer patients were treated with radical cystectomy, and intrafascial neurovascular bundle spare technique was applied in all these patients. Mean age of 26 patients was 56.1 y (45 - 66). Among 26 patients, 21 cases were in stage T2, 5 cases were in stage T3. All patients choose Orthotopic neobladder as urinary diversion manner. We use intrafascial neurovascular bundle spare technique, dissect between prostatic fascial and prostatic capsule, spare neurovascular bundle. Operating time, blood loss, complications, continence and sexual function 3 months after surgery were recorded. Results: In all patients, mean operating time was 328 min, mean blood loss was 316 ml. Only 4 patients need transfusion during surgery. 1 case of urinary fistula was found after surgery, and spontaneously cured 10 days after surgery. 1 case of bowel obstruction was found, and was cured by conservative therapy. 4 cases of incontinence were found 3 months after surgery. 18 patients had a nomal erectile function 3 months after surgery. Conclusions: Intrafascial neurovascular bundle spare technique can safely and effectively reserve neurovascular bundle in radical cystectomy. Patients can reserve continence and erectile function by this technique.

A Randomized Control Trial Comparing Direct Stripping and Bipolar Electrocoagulation for Laparoscopic Endometriotic Cystectomy-Surgical and Histopathological Aspects

The present study compared two different techniques of endometriotic cystectomy at the hilus : continuation of strip-ping and bipolar elctrocoagulation and cuttin . This was a randomized controlled study was done on 64 patients, who had laparoscopically confirmed endometriomas > 3 cm in diameter. Endometriotic cystectomy was initiated by excision of a circular rim of tissue at the original adhesion site followed by stripping and randomization was done at the ovarian hilum into 2 groups. In Group I surgery was completed by continuation of stripping and in group II surgery was completed by bipolar coagulation and cutting with scissors. Operative time and operative difficulty were evaluated at both steps by the same surgeon. Histopathology confirmation of the loss of normal ovarian tissue was recorded in the excised cyst and at the hilus separately. Data was analysed using Stata software, fisher’s exact test was employed to assess operative difficulty and Kruskal-Wallis test was used to evaluate ovarian tissue quality. The mean operating time was reported to be significantly lesser in the coagulation and cutting group. The operative difficulty was comparable in two groups. The number of primordial follicles sacrificed showed no significant difference in both groups. Complication rate in terms of hemorrhage was higher in the direct stripping group.

A Preliminary Investigation: Alvimopan Use to Prevent Post-Operative Ileus after Radical Cystectomy with Urinary Diversion

Background: Postoperative ileus (POI) is a common and frustrating patient complication after a urinary diversion by using a segment of bowel. Alvimopan is an oral selective antagonist to the peripheral μ-opioid receptor. Our study investigates the effect of alvimopan on POI in patients undergoing radical cystectomy. There are no documented studies on alvimopan’s efficacy in urologic surgery literature. Methods: Approval from the Institutional Review Board was obtained to conduct a retrospective review of patients’ records from August 2009 until August 2011. The study included sixteen patients who had undergone radical cystectomy with ileal diversion. Exclusion criteria included patients with chronic opioid use, previous colostomy or ileostomy, or significant comorbidities which could cause increased postoperative complications. Statistical analysis was performed to examine the association of alvimopan use with decreased time to dietary advancement and decreased length of hospital stay. Results: The alvimopan group advanced their diet more than 24 hours earlier in comparison with the alvimopan naive group (P < 0.0433), and the alvimopan group had a greater had a greater or 26% shorter hospital length (P < 0.0451) than one day. We showed a reduced risk of POI and subsequent decreased hospital course length. There was no significant difference in readmission rate or need for nasogastric tube (NGT). Interpretation: To our knowledge we report one of the first uses of alvimopan in reducing POI in the urological surgery literature. Our novel experience with using this drug is encouraging. Further research will ultimately determine if standard use of alvimopan to decrease POI in radical cystectomy with ileal diversion will be implemented.

Robot-assisted radical cystectomy for bladder cancer: single-center experience

Objective:Radical cystectomy remains the most effective treatment for patients with localized,invasive bladder cancer and recurrent noninvasive disease.Recently some surgeons have begun to describe outcomes associated with less invasive surgical approaches to this disease,such as laparoscopic or robotic assisted techniques.We report our maturing experience with 100 consecutive cases of robotic assisted laparoscopic radical cystectomy regarding perioperative results,pathological outcomes,and surgical complications.Methods:A total of 100 consecutive patients(73 male and 27 female)underwent robotic radical cystectomy with intracorporeal urinary diversion at our institution from February 2018 to February 2021 for clinically localized bladder cancer.Outcome measures evaluated included operative variables,hospital recovery,pathological outcomes,and complication rate.Results:The mean age of this cohort was 60.4 years(range 38 to 82).Ninety-five patients underwent ileal conduit diversion,5 received a neobladder).The mean operating room time for all patients was 184 min(min time was 160 min)and mean surgical blood loss was 286 ml.On surgical pathology,2%of the cases were pT1,35%were pT2,51+12%were pT3/T4 disease and 17%were node positive.The mean number of lymph nodes removed was 16(range 10 to 40).In no case was there a positive surgical margin.The mean days to flatus were 2.6,bowel movement 2.8 and discharge home 8.2.There were 21 postoperative complications in 20 patients with 4%having a major complication(Clavien grade 3 or higher)and 15%being readmitted within 30 days after surgery.At a mean follow-up of 12 months 3 patients had disease recurrence and died 4 of disease.Conclusions:We report a relatively large cohort and maturing experience with robotic radical cystectomy for the treatment of bladder cancer,providing acceptable surgical and pathological outcomes.These results support continued efforts to refine the surgical management of muscle-invasive bladder cancer.

Effects of suspension laparoscopy and pneumoperitoneum laparoscopic surgery on ovarian function, inflammatory response and stress hormone in patients with ovarian cystectomy

Objective:To investigate the effects of suspension laparoscopy and pneumoperitoneum laparoscopic surgery on inflammatory response, stress hormone and ovarian function in patients with ovarian cystectomy.Methods: Retrospective analysis of the data of laparoscopic ovarian cyst denudation in our hospital from July 2015 to August 2017, and they were were divided into the control group and the treatment group according to the surgical methods they accepted. The levels of inflammatory factors and stress hormone preoperative and postoperative 24 h, and ovarian function of the menstrual period 3rd day preoperative and postoperative 3 months of the two groups were compared.Results: There was no significant difference in the levels of TNF-α, CRP, COR, NE, E2, LH and FSH between the two groups before the operation. Postoperative 24 h, the levels of TNF-α, CRP, COR and NE in the treatment group were significantly lower than those in the control group, and the level of E2 in the treatment group was higher than that in control group, the levels of LH and FSH in the treatment group were lower than those in control group postoperative 3 months, the difference were statistically significant.Conclusion: Compared with pneumoperitoneum laparoscopic surgery, suspended laparoscopic surgery can effectively reduce the inflammatory response, reduce the level of stress hormone and improve ovarian function in patients undergoing ovarian cystectomy, which has a certain clinical value.

Perioperative outcomes and survival of radical cystectomy as a function of body mass index

AIM: To evaluate the perioperative and long term outcomes of cystectomy in obese patients.METHODS: This is a retrospective review of 580 patients for whom radical cystectomy(RC) was performed for primary urothelial bladder cancer between November 1996-April 2013 at a single institution. Body mass index(BMI) was available for 424 patients who were categorized as underweight(< 18.5), normal(18.5-24.9), overweight(25.0-29.9), and obese(≥ 30). Baseline demographics, perioperative outcomes, and survival were assessed. Overall survival(OS) and disease specific survival(DSS) was estimated by Kaplan-Meier method. Medians were compared using the Mann-Whitney U Test. Categorical variables were compared using the χ2 test. A P-value of < 0.05 was considered statistically significant. Statistical analyses were performed using the Software Package for the Social Sciences(SPSS), Version 20(International Business Machines SPSS, Chicago, IL, United States). RESULTS: The median age of all patients was 69 years(inter-quartile range 60-75) and median followup was 23.4 mo(8.7-55.1). Patients were characterized as underweight [9,(2.1%)], normal [113,(26.7%)],overweight [160,(37.8%)], or obese [142,(33.5%)]. Estimated blood loss during RC was higher in the obese group(800 m L) as compared to the normal weight group(500 m L). However, need for transfusion(47.7% vs 52.1%), number of lymph nodes resected(32 vs 30), length of stay(9 d vs 8 d), and 30-d readmission(29.7% vs 25.2%) between obese and normal BMI patients were similar. Obese patients underwent ileal neobladder diversion in 42% of cases, compared to 24% of normal BMI patients(0.003). Normal BMI and obese patients had comparable urinary incontinence(21.4% vs 25.6%, P = 0.343), and need for intermittent catheterization(14.3% vs 5.2%, P = 0.685) at 2 years follow-up. Overall survival was better in obese compared to normal BMI patients on univariate analysis, with median survival of 67 mo vs 37 mo, respectively(P = 0.031). Disease specific survival in these populations followed the same Kaplan Meier curve, with the obese group having a significantly improved OS, P = 0.016. Underweight patients had a significantly worse prognosis, with a median overall survival of 19 mo(P = 0.018). Disease specific survival was significantly worse in the underweight group compared to the obese group, P = 0.007. On multivariate analysis underweight patients remained at increased risk for death(HR = 3.1, P = 0.006), as were older patients(HR = 1.6, P = 0.006), those with multiple nodal metastases(HR = 3.7, P = 0.007), and those who had received neoadjuvant chemotherapy(HR = 2.0, P = 0.015).CONCLUSION: Perioperative outcomes and survival following RC in obese patients is comparable with nonobese patients. Underweight patients have the worst OS and DSS.

The impact of chemotherapy-naïve open radical cystectomy delay and perioperative transfusion on the recurrence-free survival: A perioperative parameters-based nomogram

Objective: To develop and internally validate a nomogram to predict recurrence-free survival (RFS) including the time to radical cystectomy (RC) and perioperative blood transfusion (PBT) as potential predictors.Methods: Patients who underwent open RC and ileal conduit between January 1996 to December 2016 were split into developing (n=948) and validating (n=237) cohorts. The time to radical cystectomy (TTC) was defined as the interval between the onset of symptoms and RC. The regression coefficients of the independent predictors obtained by Cox regression were used to construct the nomogram. Discrimination, validation, and clinical usefulness in the validation cohort were assessed by the area under the curve, the calibration plot, and decision curve analysis.Results: In the developing dataset, the 1-, 5-, and 10-year RFS were 83.0%, 47.2%, and 44.4%, respectively. On multivariate analysis, independent predictors were TTC (hazards ratio [HR] 1.07, 95% confidence interval [CI] 1.05-1.08, p<0.001), PBT (one unit: HR 1.40, 95% CI 1.03-1.90, p=0.03;two or more units: HR 1.72, 95% CI 1.29-2.29, p<0.001), bilateral hydronephrosis (HR 1.54, 95% CI 1.21-1.97, p<0.001), squamous cell carcinoma (HR 0.60, 95% CI 0.45-0.81, p=0.001), pT3-T4 (HR 1.77, 95% CI 1.41-2.22, p<0.001), lymph node status (HR 1.53, 95% CI 1.21-1.95, p<0.001), and lymphovascular invasion (HR 1.28, 95% CI 1.01-1.62, p=0.044). The areas under the curve in the validation dataset were 79.3%, 69.6%, and 76.2%, for 1-, 5-, and 10-year RFS, respectively. Calibration plots showed considerable correspondence between predicted and actual survival probabilities. The decision curve analysis revealed a better net benefit of the nomogram.Conclusion: A nomogram with good discrimination, validation, and clinical utility was constructed utilizing TTC and PBT in addition to standard pathological criteria.

Total cystectomy of 10 dogs with transitional cell carcinoma of urinary bladder involving trigonal area-retrospective case study

Transitional cell carcinoma(TCC)is the most common tumor of urinary bladder(UB)in dogs.TCC usually has high invasiveness and frequent involvement of trigone region,and therefore most TCC in dogs are judged as unresectable when diagnosed.Moreover,tumor involvement of trigone region and urethra could cause partial or complete urinary tract obstruction.As TCCs are clinically highly malignant,median survival time of the patients with TCCs at any TMN stage has been reported to be less than 1 year regardless of the type of surgical intervention and chemotherapeutic regimen in most previously studies.