Clinical and histopathological features of bladder cancer following radiotherapy for prostate cancer: A comparative study.

INTRODUCTION: Low certainty exists on how bladder cancer (BCa) after pelvic radiotherapy (RT) differs from BCa in radiation-naive patients from a histopathological and clinical perspective. This study aims to compare histopathological features of bladder tumors between patients with previous RT for prostate cancer (PCa) and radiation-naive patients using single-institutional data and to estimate relapse-free survival (eRFS) and cystectomy-free survival (eCFS) in both groups. MATERIALS AND METHODS: Comparative study in adult men diagnosed with BCa in Hospital Italiano de Buenos Aires, Argentina, between January 2015 and December 2020. Included patients were categorized as previously irradiated for PCa or radiation-naive. PRIMARY OUTCOME: differences in prevalence of aggressiveness features of bladder tumors (variant histology; high-grade tumors; muscle-invasive disease; criteria compliance for high or very-high risk of progression) between irradiated and radiation-naive patients at diagnosis of BCa. SECONDARY OUTCOMES: differences in eRFS and eCFS between groups. RESULTS: In total, 34 and 291 patients were included in the Irradiated and Radiation-naive groups, respectively. Mean age at the time of diagnosis of BCa was 72.7 years (CI 95% 71.6-73.8). Median follow-up of the overall cohort was 25 months (IQR 11-45.5). Concerning primary outcomes, no statistical differences were found except for a higher prevalence of low-grade tumors between irradiated patients and high-grade tumors between radiation-naive patients (P 0.018). Regarding secondary outcomes, prior RT did not increase neither eRFS nor eCFS in both univariate and multivariate analysis. CONCLUSIONS: BCa after RT for PCa has similar histological features and cystectomy free-survival compared to BCa in a radiation-naive population. For patients with non-muscle invasive BCa arising after prostate RT, the risk of recurrences appears to be similar to non-irradiated patients.

Ephrin-B1 Is a Novel Biomarker of Bladder Cancer Aggressiveness. Studies in Murine Models and in Human Samples.

Bladder cancer (BC) is the ninth most common cancer worldwide, but molecular changes are still under study. During tumor progression, Epithelial cadherin (E-cadherin) expression is altered and ß-catenin may be translocated to the nucleus, where it acts as co-transcription factor of tumor invasion associated genes. This investigation further characterizes E-cadherin and ß-catenin associated changes in BC, by combining bioinformatics, an experimental murine cell model (MB49/MB49-I) and human BC samples. In in silico studies, a DisGeNET (gene-disease associations database) analysis identified CDH1 (E-cadherin gene) as one with highest score among 130 BC related-genes. COSMIC mutation analysis revealed CDH1 low mutations rates. Compared to MB49 control BC cells, MB49-I invasive cells showed decreased E-cadherin expression, E- to P-cadherin switch, higher ß-catenin nuclear signal and lower cytoplasmic p-Ser33-ß-catenin signal, higher Ephrin-B1 ligand and EphB2 receptor expression, higher Phospho-Stat3 and Urokinase-type Plasminogen Activator (UPA), and UPA receptor expression. MB49-I cells transfected with Ephrin-B1 siRNA showed lower migratory and invasive capacity than control cells (scramble siRNA). By immunohistochemistry, orthotopic MB49-I tumors had lower E-cadherin, increased nuclear ß-catenin, lower pSer33-ß-catenin cytoplasmic signal, and higher Ephrin-B1 expression than MB49 tumors. Similar changes were found in human BC tumors, and 83% of infiltrating tumors depicted a high Ephrin-B1 stain. An association between higher Ephrin-B1 expression and higher stage and tumor grade was found. No association was found between abnormal E-cadherin signal, Ephrin-B1 expression or clinical-pathological parameter. This study thoroughly analyzed E-cadherin and associated changes in BC, and reports Ephrin-B1 as a new marker of tumor aggressiveness.

Functional and Objective Results of Urinary Undiversions in Oncologic Patients.

OBJECTIVE: To review surgical outcomes in urinary undiversions and describe short and long-term complications. METHODS: Retrospective review of patients who underwent urinary undiversion in our institution between May 2010 and May 2016. Complications were graded according to the Clavien classification. All patients completed the Patient Global Impression of Improvement questionnaire to indicate overall satisfaction with urinary undiversion. RESULTS: Median time from the cystectomy to undiversion was 29 months (range 11-53 months). Five patients (55%) reported significant distress related to the ileal conduit and were undiverted into an orthotopic neobladder. A female patient with an orthotopic neobladder and severe urinary incontinence received neobladder neck closure and catheterizable channel. Another female patient with an orthotopic neobladder was undiverted into an Indiana Pouch. Complications during the first 60 days were mostly minor, Clavien I (1 patient), 5 patients Clavien II, and a patient with Clavien IIIb. Patient Global Impression of Improvement questionnaire scores showed that 6 patients (67%) felt "Very much better" and 3 patients (33%) felt "Much better" after urinary undiversion 60%. CONCLUSION: After urinary undiversions, minor complication rate is high, and major complication rate is considerable. Urinary undiversions are a highly complex, yet feasible procedure, which requires experienced multidisciplinary teams and demands appropriate patient selection. Patients, after undiversions show a high degree of satisfaction with long-term satisfactory outcomes, which points out the need for consideration for these procedures once the oncologic disease is controlled.

Resultados oncológicos en pacientes con cáncer de vejiga pT0 posterior a cistectomía radical / Oncological outcomes of Patients with pT0 Bladder Cancer after Radical Cystectomy

Introducción: El estadío pT0 del cáncer de vejiga implica la ausencia de enfermedad en la pieza de cistectomía radical (CR). El objetivo de este estudio es describir los resultados oncológicos de los pacientes con estadío pT0 posterior a CR por carcinoma urotelial de vejiga. Materiales y métodos: Estudio retrospectivo de pacientes sometidos a CR por cáncer de vejiga, en una sola institución, sin neoadyuvancia, entre junio de 2005 y julio de 2013. Se incluyeron aquellos pacientes con diagnóstico histológico de estadío pT0 pN0. Se estimó la sobrevida global, sobrevida cáncer-específica y sobrevida libre de recidiva con el método de Kaplan-Meier. Resultados: De 254 pacientes cistectomizados, 17 presentaron estadío pT0 pN0 (6,7%). La mediana de edad fue 67 años (rango 49-85), 15 pacientes fueron hombres (88%). Los resultados patológicos posterior a resección transuretral de vejiga (RTUv) fueron 17% pT1 (n=3) y 83% pT2 (n=14). La mediana de tiempo entre RTUv y CR fue 60 días (rango 30- 95). Al 41% se le realizó derivación urinaria tipo Bricker y al 59%, una neovejiga. La mediana de estadía hospitalaria fue 8 días (rango 6-44). Se evidenció adenocarcinoma de próstata en 4 pacientes. La mediana de ganglios resecados fue 6 (rango 2-17). Ningún paciente recibió adyuvancia. La mediana de seguimiento fue 69 meses (rango 5-120). Un paciente presentó recidiva uretral a los 72 meses de la CR. La sobrevida cáncer-específica fue 100%, la sobrevida libre de recaída a 5 años fue 83,3% (intervalo de confianza [IC] de 95%: 53,5-100) y la sobrevida global a 5 años fue 82,4% (IC 95%: 64,7-100). Conclusión: El estadío pT0 del cáncer de vejiga presenta resultados oncológicos más favorables que los estadíos más avanzados. Sin embargo, la posibilidad de recurrencia existe, por lo que no se debe discontinuar el seguimiento de estos pacientes (AU)

Introduction: There are cases in which there is no evidence of disease in the radical cystectomy (RC) specimen (pT0 stage). The purpose of this study is to evaluate oncological outcomes of patients with pT0 bladder cancer after RC, in a single institution, without neo-adjuvant therapy. Materials and methods: Patients who underwent radical cystectomy from June 2005 to July 2013 were reviewed retrospectively. All patients had history of bladder urothelial carcinoma, treated with transurethral resection of the bladder (TURB) and confirmed with pathological analysis. Study variables included TURB pathology, time to RC, and pathologic features. Overall survival (OS), cancer-specific survival (CSS) and recurrence-free survival (RFS) were estimated. Results: RC was performed on 254 patients; 17 patients (6.7%) had pT0N0 stage. Median age was 67 years (range 49-85 years); 15 patients were male (88%). TURB pathology specimens were 17% pT1 (n=3), and 83% pT2 (n=14). Median time between TURB and RC was 60 days (range 30-95). Seven patients (41%) received an ileal conduit, and ten patients (59%) received a neobladder. Median hospital stay was eight days (range 6-44). Prostate adenocarcinoma was found in four (23%) patients. Median resected lymph nodes were six (range 2-17). No patients received adjuvant chemotherapy. Median follow-up was 69 months (range 5-120 months). One patient had a urethral relapse 72 months after RC. There was no cancer-specific mortality. RFS at 5 years was 83.3% (confidence interval [CI] 95%: 53.5-100); OS at 5 years was 82.4% (CI 95%: 64.7-100). Conclusion: pT0 stage after radical cystectomy shows more favorable oncologic outcomes than higher stages. However, cancer recurrence was found in a low number of patients, thus, patient follow-up should be maintained (AU)

A case of emphysematous cystitis caused by Klebsiella pneumoniae.

Emphysematous cystitis is a rare type of urinary tract infection that is characterized by air pockets within the bladder wall and lumen, which come from gas that is mainly produced by gram-negative bacteria, notably Escherichia coli. This infection is more common in older women with poorly controlled diabetes. An abdominal computerized tomography (CT) scan is the gold standard method to make the diagnosis. The infection can be life-threatening, so prompt treatment is essential. We present a case of a 39-year-old woman with poorly controlled type 2 diabetes who developed emphysematous cystitis after a bilateral adrenalectomy. The infection was diagnosed by a CT scan that revealed gas in the bladder wall. A urine culture revealed 106 colonies/mL of Klebsiella pneumoniae. After a month of treatment with intravenous antibiotics (vancomycin plus meropenem plus colistin), bladder drainage, and strict glycemic control, the patient had a good outcome.

[Randomized study on urinary continence after radical prostatectomy with previous kinesic perineal physiotherapy]. / Estudio randomizado sobre continencia urinaria postprostatectomía radical con rehabilitación perineal kiesica previa.

OBJECTIVES: Urinary incontinence is one of the main complications after radical prostatectomy (RP). Preoperative kinetic physiotherapy could be useful as a preventive treatment of these complication. The objective of this work is to demonstrate the usefulness of preoperative perineal kinetic physiotherapy for early recovery of urinary continence after radical prostatectomy. METHODS: Randomized controlled clinical trial. 38 patients were divided into groups of 19 before radical prostatectomy. The first group (K) received preoperative kinesic treatment whereas the second group (NK) did not (control group). Urinary continence was evaluated at 14, 30 and 60 days after catheter retrieval. RESULTS: There were not epidemiological or tumor biology differences between groups. The percentages of continent patients in group K at 14, 30 and 60 days were 47.36%, 47.36% and 78.9% respectively, whereas in the NK group where 47.36%, 47.36%, and 89.4% respectively (p > 0.05). CONCLUSIONS: Kinesic perineal exercises before radical prostatectomy did not diminish the times of urinary continence recovery or its appearance.

Estudio randomizado sobre continencia urinaria postprostatectomía radical con rehabilitación perineal kiesica previa / Randomized study on urinary continence after radical prostatectomy with previous kinesic perineal physiotherapy

Objetivo: La incontinencia urinaria es una de las principales complicaciones luego de la realización de prostatectomía radical (PR). La rehabilitación kinésica preoperatoria, podría ser de utilidad como tratamiento preventivo de esta complicación. Demostrar la utilidad de la kinesiología perineal preoperatoria en la recuperación precoz de la continencia urinaria post prostatectomía radical. Métodos: Ensayo Clínico Controlado Randomizado Aleatorizado. 38 pacientes fueron divididos en dos grupos de 19 previo a la realización de la PR. El primer grupo (K) recibió tratamiento kinésico preoperatorio, mientras que el segundo grupo (NK) no (grupo control). Se evaluó la continencia de orina a los 14, 30 y 60 días post extracción de sonda. Resultados: No hubo diferencias epidemiológicas y de biología tumoral entre grupos. El porcentaje de pacientes continentes en el grupo K al los 14, 30 y 60 días, respectivamente fue de 47,36%, 47,36% y 78,9%, respectivamente, mientras que en el grupo NK fueron de 47,36%, 47,36% y 89,4%, respectivamente (p>0,05). Conclusión: Los ejercicios kinésicos perineales previos a la prostatectomía radical, no disminuyeron los tiempos de recuperación de la continencia urinaria ni la ocurrencia de la misma (AU)

Objectives: Urinary incontinence is one of the main complications after radical prostatectomy (RP). Preoperative kinetic physiotherapy could be useful as a preventive treatment of these complication. The objective of this work is to demonstrate the usefulness of preoperative perineal kinetic physiotherapy for early recovery of urinary continence after radical prostatectomy. Methods: Randomized controlled clinical trial. 38 patients were divided into groups of 19 before radical prostatectomy. The first group (K) received preoperative kinesic treatment whereas the second group (NK) did not (control group). Urinary continence was evaluated at 14, 30 and 60 days after catheter retrieval. Results: There were not epidemiological or tumor biology differences between groups. The percentages of continent patients in group K at 14,30 and 60 days were 47.36%, 47.36% and 78.9% respectively, whereas in the NK group where 47.36%, 47.36%, and 89.4% respectively (p > 0.05). Conclusions: Kinesic perineal exercises before radical prostatectomy did not diminish the times of urinary continence recovery or its appearance (AU)

Neuromodulación: una alternativa terapéutica para las disfunciones miccionales / Neuromodulation: a therapeutic alternative for mictional dysfunctions

La neuromodulación mediante estimulación eléctrica de las raíces sacras (EERS) es una alternativa terapéutica no destructiva y reversible, indicada en pacientes con disfunción miccional crónica cuando los tratamientos conservadores han resultado ineficaces o mal tolerados. Esta estimulación logra influir sobre el comportamiento de la vejiga, del esfínter uretral externo y de los músculos del suelo pélvico. La estimulación es de tipo eléctrico y se ejerce mediante salvas de pulsos de corriente aplicada a la tercera raíz sacra (S3). El objetivo primordial de esta técnica es restablecer el patrón de micción normal

Neuromodulación: una alternativa terapéutica para las disfunciones miccionales / Neuromodulation: a therapeutic alternative for mictional dysfunctions

La neuromodulación mediante estimulación eléctrica de las raíces sacras (EERS) es una alternativa terapéutica no destructiva y reversible, indicada en pacientes con disfunción miccional crónica cuando los tratamientos conservadores han resultado ineficaces o mal tolerados. Esta estimulación logra influir sobre el comportamiento de la vejiga, del esfínter uretral externo y de los músculos del suelo pélvico. La estimulación es de tipo eléctrico y se ejerce mediante salvas de pulsos de corriente aplicada a la tercera raíz sacra (S3). El objetivo primordial de esta técnica es restablecer el patrón de micción normal