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1.
Ann Surg Oncol ; 30(7): 4531-4539, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37099087

RESUMEN

INTRODUCTION: After recent presentation of the first complete robot-assisted retroperitoneal nephroureterectomy with bladder cuff (RRNU) for patients with upper tract urothelial cancer (UTUC), we aimed to compare this new surgical technique with robot-assisted transperitoneal nephroureterectomy (TRNU) representing the current standard of care. METHODS: Robot-assisted nephroureterectomies (NUs) were retrospectively analyzed and compared based on two groups: transperitoneal versus retroperitoneal approach. Baseline data were collected for patient demographics, tumor characteristics, intra- (EAUiaiC) and postoperative (Clavien-Dindo) complications, and perioperative variables. Tumor characteristics included grade of malignancy, clinical stage, and surgical margin status. Short-term follow-up data including 30-day readmission rates were collected. Statistical analyses were performed assuming a significant p-value of < 0.05. RESULTS: The analysis includes perioperative patient data after proven UTUC of 24 TRNU versus 12 RRNU (mean age: 70 versus 71 years; BMI: 25.9 versus 26.1 kg/m2; CCI score ≥ 4: 83% versus 75%; ASA score ≥ 3: 37% vs 33%). Intraoperative (16.4% vs 0%, p = 0.35) and postoperative (25% vs 12.5%, p = 0.64) complications demonstrated no significant discrepancy. Notably, RRNU demonstrated significantly shorter surgery time (p < 0.05) and length of stay (p < 0.05). There was no significant difference in histopathological tumor characteristics, whereas significantly more lymph nodes were removed through RRNU (11.0±3.3 vs. 6.4±5.1, p < 0.05). Finally, no statistical difference was shown in short-term follow-up. CONCLUSION: We report the first head-to-head comparison between RRNU and TRNU. RRNU proves to be a safe and feasible approach which appears to be non-inferior to TRNU. RRNU expands the spectrum of minimally invasive treatment options, particularly for patients with major previous abdominal surgery.


Asunto(s)
Carcinoma de Células Transicionales , Laparoscopía , Procedimientos Quirúrgicos Robotizados , Robótica , Neoplasias de la Vejiga Urinaria , Humanos , Anciano , Nefroureterectomía , Vejiga Urinaria/patología , Estudios Retrospectivos , Carcinoma de Células Transicionales/cirugía , Carcinoma de Células Transicionales/patología , Neoplasias de la Vejiga Urinaria/cirugía , Laparoscopía/métodos , Procedimientos Quirúrgicos Robotizados/métodos , Resultado del Tratamiento
2.
World J Urol ; 40(4): 1019-1026, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35037964

RESUMEN

INTRODUCTION: While various surgical techniques have been reported for open and minimally invasive treatment of upper tract urothelial cancer (UTUC), the procedure of robot-assisted nephroureterectomy (NU) with bladder cuff has never been reported using only retroperitoneum without entering abdominal cavity. We developed a novel port placement and technique allowing to perform robot-assisted NU by a unique retroperitoneal approach. METHODS: Between February and June 2021 patients with history of UTUC were treated by robot-assisted NU completely restricted to retroperitoneal space using a singular trocar placement and a two-step docking without relocation of the surgical robot. Patient characteristics, perioperative outcomes and short-term follow-up were prospectively analyzed. RESULTS: The analysis included five patients [median age: 73 years; BMI: 27.2 kg/m2; Charlson comorbidity index 5]. All five patients had UTUC with a mean tumor size of 3.02 cm (range 0.9-6.0). UTUC was localized to distal ureter in two and to kidney in three cases. No positive surgical margins were noted for all patients with UTUC [1 low-grade and 4 high-grade]. Retroperitoneal lymphadenectomy in three patients did not reveal positive nodes. No intraoperative adverse events exceeding EAUiaiC classification ≥ 2 were observed, while median EBL was 150 ml (IQR 100-250). No patient experienced postoperative complications exceeding Clavien-Dindo classification ≥ 3a. Median hospital stay was 5.4d without any 30-d readmission. CONCLUSION: We demonstrate safety and feasibility of the first entire robot-assisted retroperitoneal nephroureterectomy (RRNU) with bladder cuff. This surgical technique is easily reproducible, while surgical outcomes are similar to other established techniques.


Asunto(s)
Carcinoma de Células Transicionales , Laparoscopía , Procedimientos Quirúrgicos Robotizados , Robótica , Uréter , Neoplasias Ureterales , Neoplasias de la Vejiga Urinaria , Anciano , Carcinoma de Células Transicionales/patología , Humanos , Laparoscopía/métodos , Nefroureterectomía/métodos , Espacio Retroperitoneal , Procedimientos Quirúrgicos Robotizados/métodos , Uréter/patología , Uréter/cirugía , Neoplasias Ureterales/patología , Neoplasias Ureterales/cirugía , Vejiga Urinaria/patología , Vejiga Urinaria/cirugía , Neoplasias de la Vejiga Urinaria/cirugía
3.
World J Urol ; 40(2): 327-334, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34854948

RESUMEN

PURPOSE: Clinical stage I (CSI) testicular germ cell tumors (TGCT) represents disease confined to the testis without metastasis and CSIS is defined as persistently elevated tumor markers (TM) after orchiectomy, indicating subclinical metastatic disease. This study aims at assessing clinical characteristics and oncological outcome in CSIS. METHODS: Data from five tertiary referring centers in Germany were screened. We defined correct classification of CSIS according to EAU guidelines. TM levels, treatment and relapse-free survival were assessed and differences between predefined groups (chemotherapy, correct/incorrect CSIS) were analyzed with Fisher's exact and Chi-square test. RESULTS: Out of 2616 TGCT patients, 43 (1.6%) were CSIS. Thereof, 27 were correctly classified (cCSIS, 1.03%) and 16 incorrectly classified (iCSIS). TMs that defined cCSIS were in 12 (44.4%), 10 (37%), 3 (11.1%) and 2 (7.4%) patients AFP, ß-HCG, AFP plus ß-HCG and LDH, respectively. In the cCSIS group, six patients were seminoma and 21 non-seminoma. Treatment consisted of active surveillance, carboplatin-mono AUC7 and BEP (bleomycin, etoposide and cisplatin). No difference between cCSIS and iCSIS with respect to applied chemotherapy was found (p = 0.830). 5-year relapse-free survival was 88.9% and three patients (11%) in the cCSIS group relapsed. All underwent salvage treatment (3xBEP) with no documented death. CONCLUSION: Around 1% of all TGCT were classified as cCSIS patients. Identification of cCSIS is of critical importance to avoid disease progression and relapses by adequate treatment. We report a high heterogeneity of treatment patterns, associated with excellent long-term survival irrespective of the initial treatment approach.


Asunto(s)
Neoplasias de Células Germinales y Embrionarias , Seminoma , Neoplasias Testiculares , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Cisplatino , Etopósido/uso terapéutico , Humanos , Masculino , Recurrencia Local de Neoplasia/tratamiento farmacológico , Recurrencia Local de Neoplasia/terapia , Estadificación de Neoplasias , Neoplasias de Células Germinales y Embrionarias/tratamiento farmacológico , Orquiectomía , Seminoma/patología , Neoplasias Testiculares/patología
4.
World J Urol ; 39(1): 149-156, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32222811

RESUMEN

PURPOSE: Open simple prostatectomy (OSP) is a standard surgical technique for patients with benign prostatic hyperplasia with prostate size larger than 80 ml. As a minimally invasive approach, robot-assisted simple prostatectomy (RASP) emerged as a feasible surgical alternative. Currently, there are no definite recommendations for the standard use of RASP. Therefore, we aimed at investigating various clinical outcomes comparing RASP with OSP. METHODS: In this retrospective single-center study, we evaluated clinical data from 103 RASP and 31 OSP patients. Both cohorts were compared regarding different clinical characteristics with and without propensity score matching. To detect independent predictive factors for clinical outcomes, multivariate logistic regression analysis was performed. RESULTS: Robot-assisted simple prostatectomy patients demonstrated a lower estimated blood loss and need for postoperative blood transfusions as well as less postoperative complications. OSP had a shorter operative time (125 min vs. 182 min) longer hospital stay (11 days vs. 9 days) and longer time to catheter removal (8 days vs. 6 days). In the multivariate analysis, RASP was identified as an independent predictor for longer operative time, lower estimated blood loss, shorter length of hospital stay, shorter time to catheter removal, less postoperative complications and blood transfusions. CONCLUSION: Robot-assisted simple prostatectomy is a safe alternative to OSP with less perioperative and postoperative morbidity. Whether OSP (shorter operative time) or RASP (shorter length of hospital stay) has a more favorable economic impact depends on the particular conditions of different health care systems. Further prospective comparative research is warranted to define the value of RASP in the current surgical management of benign prostatic hyperplasia.


Asunto(s)
Prostatectomía/métodos , Hiperplasia Prostática/cirugía , Procedimientos Quirúrgicos Robotizados , Anciano , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos , Resultado del Tratamiento
5.
World J Urol ; 38(12): 3155-3160, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32124017

RESUMEN

BACKGROUND: Radical cystectomy (RC) has a high morbidity and leads to a significant socio-economic burden. We aimed to investigate pre-, intra-, and post-operative variables to create a novel score predicting both post-operative clinical (complications) and economic (length of hospital stay) outcome after RC. METHODS: We retrospectively evaluated clinical and histopathological data of 317 patients after RC. We performed univariate and multivariate logistic regression analyses to identify variables associated with post-operative clinical (30-day morbidity according to Clavien-Dindo complications) and economic (length of hospital stay) outcome. RESULTS: In multivariate analysis, a high number of intraoperative transfusions (T) of packed red blood cells predicted major complications (odds ratio [OR] 1.68, 95% confidence interval [CI] 1.10-2.58, p = 0.017), preoperative potassium (P) level predicted three or more complications (OR for high preoperative potassium 0.71, 95% CI 0.52-0.98, p = 0.037), and high drain (D) loss on post-operative day 1 predicted a longer hospital stay ≥ 22 days (OR 1.57, 95% CI 1.04-2.35, p = 0.003). The PT2D-Score was able to predict three or more complications (area under the curve: 0.70, 95% CI 0.61-0.78, p < 0.001) and a hospital stay of ≥ 22 days in patients after radical cystectomy (area under the curve: 0.63, 95% confidence interval 0.53-0.72, p = 0.012). CONCLUSIONS: The novel PT2D-Score combines preoperative potassium level, intraoperative blood transfusion, and post-operative drain loss to predict both clinical (30-day morbidity) and economic (length of hospital stay) outcome for patients undergoing RC. After validation in a larger cohort, the novel PT2D-Score might serve as an additional criterion to identify patients for intensified monitoring after RC.


Asunto(s)
Cistectomía , Tiempo de Internación/economía , Complicaciones Posoperatorias/epidemiología , Neoplasias de la Vejiga Urinaria/economía , Neoplasias de la Vejiga Urinaria/cirugía , Anciano , Anciano de 80 o más Años , Transfusión Sanguínea , Cistectomía/métodos , Femenino , Humanos , Cuidados Intraoperatorios , Masculino , Persona de Mediana Edad , Periodo Perioperatorio , Potasio/sangre , Pronóstico , Estudios Retrospectivos , Neoplasias de la Vejiga Urinaria/sangre
6.
World J Urol ; 37(7): 1415-1420, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-30341450

RESUMEN

PURPOSE: To analyze and compare preoperative patient characteristics and postoperative results in men with stress urinary incontinence (SUI) selected for an adjustable male sling system or an artificial urinary sphincter (AUS) in a large, contemporary, multi-institutional patient cohort. METHODS: 658 male patients who underwent implantation between 2010 and 2012 in 13 participating institutions were included in this study (n = 176 adjustable male sling; n = 482 AUS). Preoperative patient characteristics and postoperative outcomes were analyzed. For statistical analysis, the independent T test and Mann-Whitney U test were used. RESULTS: Patients undergoing adjustable male sling implantation were less likely to have a neurological disease (4.5% vs. 8.9%, p = 0.021), a history of urethral stricture (21.6% vs. 33.8%, p = 0.024) or a radiation therapy (22.7% vs. 29.9%, p = 0.020) compared to patients that underwent AUS implantation. Mean pad usage per day (6.87 vs. 5.82; p < 0.00) and the ratio of patients with a prior incontinence surgery were higher in patients selected for an AUS implantation (36.7% vs. 22.7%; p < 0.001). At maximum follow-up, patients that underwent an AUS implantation had a significantly lower mean pad usage during daytime (p < 0.001) and nighttime (p = 0.018). Furthermore, the patients' perception of their continence status was better with a subjective complete dry rate of 57.3% vs. 22.0% (p < 0.001). CONCLUSIONS: Patients selected for an AUS implantation showed a more complex prior history and pathogenesis of urinary incontinence as well as a more severe grade of SUI. Postoperative results reflect a better continence status after AUS implantation, favoring the AUS despite the more complicated patient cohort.


Asunto(s)
Cabestrillo Suburetral , Incontinencia Urinaria de Esfuerzo/cirugía , Esfínter Urinario Artificial , Procedimientos Quirúrgicos Urológicos Masculinos/métodos , Anciano , Estudios de Cohortes , Humanos , Masculino , Medición de Resultados Informados por el Paciente , Selección de Paciente , Radioterapia/estadística & datos numéricos , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Estrechez Uretral/epidemiología
8.
World J Urol ; 36(8): 1241-1246, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29523948

RESUMEN

PURPOSE: To measure the usage rate of social media (SoMe) resources in the prostate cancer community, we performed a comprehensive quantitative and qualitative assessment of SoMe activity on the topic of PCa on the four most frequented platforms. METHODS: We scanned the SoMe platforms Facebook, Twitter, YouTube, and Instagram for "prostate cancer" as a cross-sectional analysis or during a defined time period. Sources were included if their communication centered on PCa by title and content. We assessed activity measurements for each SoMe source and classified the sources into six functional categories. RESULTS: We identified 99 PCa-related Facebook groups that amassed 31,262 members and 90 Facebook pages with 283,996 "likes". On YouTube, we found 536 PCa videos accounting for 43,966,634 views, 52,655 likes, 8597 dislikes, and 12,393 comments. During a 1-year time period, 32,537 users generated 110,971 tweets on #ProstateCancer on Twitter, providing over 544 million impressions. During a 1-month time period, 638 contributors posted 1081 posts on Instagram, generating over 22,000 likes and 4,748,159 impressions. Among six functional categories, general information/support dominated the SoMe landscape on all SoMe platforms. CONCLUSION: SoMe activity on the topic of PCa on the four most frequented platforms is high. Facebook groups, YouTube videos, and Twitter tweets are mainly used for giving general information on PCa and education. High SoMe utilization in the PCa community underlines its future role for communication of PCa.


Asunto(s)
Neoplasias de la Próstata , Medios de Comunicación Sociales/estadística & datos numéricos , Estudios Transversales , Humanos , Masculino
9.
World J Urol ; 35(12): 1891-1897, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-28836063

RESUMEN

PURPOSE: Because the prognostic impact of the clinical and pathological features on cancer-specific survival (CSS) and overall survival (OS) in patients with papillary renal cell carcinoma (papRCC) is still controversial, we want to assess the impact of clinicopathological features, including Fuhrman grade and age, on survival in surgically treated papRCC patients in a large multi-institutional series. METHODS: We established a comprehensive multi-institutional database of surgically treated papRCC patients. Histopathological data collected from 2189 patients with papRCC after radical nephrectomy or nephron-sparing surgery were pooled from 18 centres in Europe and North America. OS and CSS probabilities were estimated using the Kaplan-Meier method. Multivariable competing risks analyses were used to assess the impact of Fuhrman grade (FG1-FG4) and age groups (<50 years, 50-75 years, >75 years) on cancer-specific mortality (CSM). RESULTS: CSS and OS rates for patients were 89 and 81% at 3 years, 86 and 75% at 5 years and 78 and 41% at 10 years after surgery, respectively. CSM differed significantly between FG 3 (hazard ratio [HR] 4.22, 95% confidence interval [CI] 2.17-8.22; p < 0.001) and FG 4 (HR 8.93, 95% CI 4.25-18.79; p < 0.001) in comparison to FG 1. CSM was significantly worse in patients aged >75 (HR 2.85, 95% CI 2.06-3.95; p < 0.001) compared to <50 years. CONCLUSIONS: FG is a strong prognostic factor for CSS in papRCC patients. In addition, patients older than 75 have worse CSM than patients younger than 50 years. These findings should be considered for clinical decision making.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Nefrectomía , Medición de Riesgo/métodos , Anciano , Carcinoma de Células Renales/diagnóstico , Carcinoma de Células Renales/mortalidad , Carcinoma de Células Renales/patología , Carcinoma de Células Renales/cirugía , Europa (Continente)/epidemiología , Femenino , Humanos , Estimación de Kaplan-Meier , Neoplasias Renales/diagnóstico , Neoplasias Renales/mortalidad , Neoplasias Renales/patología , Neoplasias Renales/cirugía , Masculino , Persona de Mediana Edad , Mortalidad , Clasificación del Tumor , Estadificación de Neoplasias , Nefrectomía/efectos adversos , Nefrectomía/métodos , América del Norte/epidemiología , Tratamientos Conservadores del Órgano/efectos adversos , Tratamientos Conservadores del Órgano/métodos , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Retrospectivos
10.
World J Urol ; 34(5): 717-24, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26358036

RESUMEN

PURPOSE: Passive removal of stone fragments in the irrigation stream is one of the characteristics in continuous-flow PCNL instruments. So far the physical principle of this so-called vacuum cleaner effect has not been fully understood yet. The aim of the study was to empirically prove the existence of the vacuum cleaner effect and to develop a physical hypothesis and generate a mathematical model for this phenomenon. METHODS: In an empiric approach, common low-pressure PCNL instruments and conventional PCNL sheaths were tested using an in vitro model. Flow characteristics were visualized by coloring of irrigation fluid. Influence of irrigation pressure, sheath diameter, sheath design, nephroscope design and position of the nephroscope was assessed. Experiments were digitally recorded for further slow-motion analysis to deduce a physical model. RESULTS: In each tested nephroscope design, we could observe the vacuum cleaner effect. Increase in irrigation pressure and reduction in cross section of sheath sustained the effect. Slow-motion analysis of colored flow revealed a synergism of two effects causing suction and transportation of the stone. For the first time, our model showed a flow reversal in the sheath as an integral part of the origin of the stone transportation during vacuum cleaner effect. The application of Bernoulli's equation provided the explanation of these effects and confirmed our experimental results. CONCLUSIONS: We widen the understanding of PCNL with a conclusive physical model, which explains fluid mechanics of the vacuum cleaner effect.


Asunto(s)
Modelos Teóricos , Nefrostomía Percutánea/instrumentación , Nefrostomía Percutánea/métodos , Diseño de Equipo , Hidrodinámica , Vacio
11.
World J Urol ; 32(2): 365-71, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23736527

RESUMEN

PURPOSE: Radical cystectomy (RC) and pelvic lymph node dissection (LND) are standard treatments for muscle-invasive urothelial carcinoma of the bladder. Lymph node staging is a prerequisite for clinical decision-making regarding adjuvant chemotherapy and follow-up regimens. Recently, the clinical and pathological nodal staging scores (cNSS and pNSS) were developed. Prior to RC, cNSS determines the minimum number of lymph nodes required to be dissected; pNSS quantifies the accuracy of negative nodal staging based on pT stage and dissected LNs. cNSS and pNSS have not been externally validated, and their relevance for prediction of cancer-specific mortality (CSM) has not been assessed. METHODS: In this retrospective study of 2,483 RC patients from eight German centers, we externally validated cNSS and pNSS and determined their prediction of CSM. All patients underwent RC and LND. Median follow-up was 44 months. cNSS and pNSS sensitivities were evaluated using the original beta-binominal models. Adjusted proportional hazards models were calculated for pN0 patients to assess the predictive value of cNSS and pNSS for CSM. RESULTS: cNSS and pNSS both pass external validation. Adjusted for other clinical parameters, cNSS can predict outcome after RC. pNSS has no independent impact on prediction of CSM. The retrospective design is the major limitation of the study. CONCLUSIONS: In the present external validation, we confirm the validity of both cNSS and pNSS. cNSS is an independent predictor of CSM, thus rendering it useful as a tool for planning the extent of LND.


Asunto(s)
Carcinoma de Células Transicionales/patología , Escisión del Ganglio Linfático/métodos , Ganglios Linfáticos/patología , Neoplasias de la Vejiga Urinaria/patología , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Transicionales/terapia , Quimioterapia Adyuvante , Estudios de Cohortes , Cistectomía , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Pelvis , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Resultado del Tratamiento , Neoplasias de la Vejiga Urinaria/terapia
12.
Br J Cancer ; 108(4): 973-82, 2013 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-23299537

RESUMEN

BACKGROUND: The B-cell translocation gene 2 (BTG2) is considered to act as a tumour-suppressor gene because of its antiproliferative and antimigratory activities. Higher levels of BTG2 expression in tumour cells have been linked to a better clinical outcome for several cancer entities. Here, we investigated the expression and function of BTG2 in bladder cancer. METHODS: The expression of BTG2 in bladder cancer cells was silenced by RNA interference. Cell motility was investigated by wound healing and Boyden chamber assays. The protein expression of BTG2 in bladder cancer was studied by immunohistochemistry. RESULTS: We observed that targeted suppression of BTG2 by RNA interference did not result in growth stimulation but led to a substantial inhibition of bladder cancer cell motility. Tissue microarray analyses of bladder cancer cystectomy specimens revealed that higher BTG2 expression levels within the tumours correlated strongly with a decreased cancer-specific survival for bladder cancer patients. CONCLUSION: These results indicate that endogenous BTG2 expression contributes to the migratory potential of bladder cancer cells. Moreover, high levels of BTG2 in bladder cancers are linked to decreased cancer-specific survival. These findings question the conception that BTG2 generally acts as a tumour suppressor and typically represents a favourable clinical marker for cancer patients.


Asunto(s)
Proteínas Inmediatas-Precoces/genética , Proteínas Supresoras de Tumor/genética , Neoplasias de la Vejiga Urinaria/genética , Anciano , Línea Celular Tumoral , Movimiento Celular/genética , Femenino , Genes Supresores de Tumor , Humanos , Proteínas Inmediatas-Precoces/metabolismo , Persona de Mediana Edad , Interferencia de ARN , Estudios Retrospectivos , Proteínas Supresoras de Tumor/metabolismo , Neoplasias de la Vejiga Urinaria/mortalidad
13.
Discov Oncol ; 14(1): 178, 2023 Sep 23.
Artículo en Inglés | MEDLINE | ID: mdl-37740836

RESUMEN

INTRODUCTION: Synergistic effects have been discussed for tyrosine kinase (TKI) and immune checkpoint inhibitors (ICI). Primary resistance to TKI might disturb subsequent ICI effectiveness. The objective was to investigate, if primary resistance to 1st line TKI monotherapy predicts response to ICI in subsequent therapy lines and impacts overall survival (OS) in advanced renal cell carcinoma (aRCC). MATERIALS AND METHODS: Retrospectively, aRCC patients which received front-line TKI from 2016 to 2019 were analyzed for the outcomes primary resistance (1LR), response to sequential ICI therapy, progression free survival (PFS) and overall survival (OS). Kaplan-Meier-estimates, Cox proportional hazards and logistic regression were used. RESULTS: Primary resistance to front-line TKI was observed in 27 (53%) of 51 patients. Groups with disease control (DC) and 1st line TKI resistance (1LR) were not different at baseline with regard to clinicopathological features. Median duration on 1st line therapy was significantly shorter in the 1LR (5.1 months) than in the DC (14.7 months) group (p = 0.01). Sequential therapy was started in 21 (75%) and 12 (52%) patients of 1LR and DC groups using nivolumab in 16 (76%) vs. 11 (92%) cases (p > 0.05). Logistic regression revealed that 1LR status, neutrophil-to-lymphocyte ratio < 3, IMDC favorable prognosis and clear cell histology had no significant impact on responsiveness to ICI in subsequent therapy lines. Cox proportional hazards demonstrated no significant association of 1LR status with PFS and OS in patients who received subsequent ICI treatment. CONCLUSION: Primary TKI resistance of aRCC was neither significantly associated with responsiveness to ICI during sequential therapy nor with PFS and OS. This adds the evidence for ICI based sequential therapy in primary TKI resistant aRCC.

14.
Br J Cancer ; 107(5): 847-55, 2012 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-22782340

RESUMEN

BACKGROUND: Inhibitors of the mammalian target of rapamycin (mTOR) might become a novel tool to treat advanced prostate cancer. However, chronic drug exposure may trigger resistance, limiting the utility of mTOR inhibitors. METHODS: Metastatic potential of PC3 prostate cancer cells, susceptible (PC3(par)) or resistant (PC3(res)) to the mTOR-inhibitor RAD001 was investigated. Adhesion to vascular endothelium or immobilised collagen, fibronectin and laminin was quantified. Motility, migration and invasion were explored by modified Boyden chamber assay. Integrin α and ß subtypes were analysed by flow cytometry, western blotting and real-time PCR. Integrin-related signalling, EGFr, Akt, p70S6kinase and ERK1/2 activation were determined. RESULTS: Adhesion was reduced, whereas motility, migration and invasion were enhanced in PC3(res). The α2 and ß1 integrin subtypes were dramatically elevated, integrins α1 and α6 were lowered, whereas α5 was nearly lost in PC3(res). Activation of the Akt signalling pathway was strongly upregulated in these cells. Treating PC3(par) cells with RAD001 reduced motility, migration and invasion and deactivated Akt signalling. Blocking studies revealed that α2 and ß1 integrins significantly trigger the motile behaviour of the tumour cells. CONCLUSION: Chronic RAD001 treatment caused resistance development characterised by distinct modification of the integrin-expression profile, driving prostate cancer cells towards high motility.


Asunto(s)
Movimiento Celular/efectos de los fármacos , Integrina alfa2/metabolismo , Integrina beta1/metabolismo , Neoplasias de la Próstata/tratamiento farmacológico , Inhibidores de Proteínas Quinasas/farmacología , Sirolimus/análogos & derivados , Serina-Treonina Quinasas TOR/metabolismo , Adhesión Celular/efectos de los fármacos , Adhesión Celular/fisiología , Línea Celular Tumoral , Movimiento Celular/fisiología , Everolimus , Humanos , Integrina alfa2/biosíntesis , Integrina beta1/biosíntesis , Masculino , Neoplasias de la Próstata/metabolismo , Neoplasias de la Próstata/patología , Sirolimus/farmacología , Serina-Treonina Quinasas TOR/biosíntesis
15.
Urologe A ; 61(2): 133-141, 2022 Feb.
Artículo en Alemán | MEDLINE | ID: mdl-34935997

RESUMEN

Although continuous technological developments have optimized and evolved medical care throughout time, these technologies were mostly still comprehensible for users. Driven by immense financial efforts, modern innovative products and technical solutions are transforming medicine today and will do so even more in the future: virtual and augmented reality. This review critically summarizes the current literature and future uses of virtual and augmented reality in the field of urology.


Asunto(s)
Realidad Aumentada , Urología , Realidad Virtual , Humanos
16.
Front Surg ; 9: 892170, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35937598

RESUMEN

Purpose: While several biopsy techniques and platforms for magnetic resonance imaging (MRI)-guided targeted biopsy of the prostate have been established, none of them has proven definite superiority. Augmented and virtual reality (mixed reality) smartglasses have emerged as an innovative technology to support image-guidance and optimize accuracy during medical interventions. We aimed to investigate the benefits of smartglasses for MRI-guided mixed reality-assisted cognitive targeted biopsy of the prostate. Methods: For prospectively collected patients with suspect prostate PIRADS lesions, multiparametric MRI was uploaded to a smartglass (Microsoft® Hololens I), and smartglass-assisted targeted biopsy (SMART TB) of the prostate was executed by generation of a cognitive fusion technology at the point-of-care. Detection rates of prostate cancer (PCA) were compared between SMART TB and 12-core systematic biopsy. Assessment of SMART-TB was executed by the two performing surgeons based on 10 domains on a 10-point scale ranging from bad (1) to excellent (10). Results: SMART TB and systematic biopsy of the prostate were performed for 10 patients with a total of 17 suspect PIRADS lesions (PIRADS 3, n = 6; PIRADS 4, n = 6; PIRADS 5, n = 5). PCA detection rate per core was significant (p < 0.05) higher for SMART TB (47%) than for systematic biopsy (19%). Likelihood for PCA according to each core of a PIRADS lesion (17%, PIRADS 3; 58%, PIRADS 4; 67%, PIRADS 5) demonstrated convenient accuracy. Feasibility scores for SMART TB were high for practicality (10), multitasking (10), execution speed (9), comfort (8), improvement of surgery (8) and image quality (8), medium for physical stress (6) and device handling (6) and low for device weight (5) and battery autonomy (4). Conclusion: SMART TB has the potential to increase accuracy for PCA detection and might enhance cognitive MRI-guided targeted prostate biopsy in the future.

17.
Urologe A ; 60(2): 186-192, 2021 Feb.
Artículo en Alemán | MEDLINE | ID: mdl-33452551

RESUMEN

BACKGROUND: Penile cancer is a rare malignancy and the wide range of quality of care associated with it often results in inferior oncologic and functional treatment outcomes. OBJECTIVES: Assessment of the current healthcare situation in clinical routine and identification of the relevant key features and reference values for quality of care. MATERIALS AND METHODS: Search for relevant peer-reviewed articles and published congress abstracts in Medline, Embase and other databases as well as Google web search engine. RESULTS: Key quality features of penile cancer management include organ-sparing surgery of the primary tumor, invasive inguinal lymph node staging and systemic treatment. Adherence to treatment guidelines is currently low. Centralization of care has already led to a considerable improvement in the quality of care in some areas and increasing conformity with the guidelines' recommendations. CONCLUSION: Centralization of care and networks based on this can significantly improve patient outcomes. Thus, reference values for core parameters of quality cancer care can be generated and validated. Moreover, organ-sparing surgery, invasive lymph node staging and systemic therapy should be increasingly utilized. As a reference value, 90% adherence to the guidelines for these three features is recommended. However, before centralization of care can be introduced, aspects relevant to practical implementation must be addressed, such as the reimbursement of travel costs for those affected, infrastructure costs and instruments to measure quality of life and patient satisfaction after centralization.


Asunto(s)
Neoplasias del Pene , Humanos , Escisión del Ganglio Linfático , Ganglios Linfáticos , Masculino , Satisfacción del Paciente , Neoplasias del Pene/cirugía , Neoplasias del Pene/terapia , Calidad de Vida
18.
Urologe A ; 60(2): 169-177, 2021 Feb.
Artículo en Alemán | MEDLINE | ID: mdl-33432371

RESUMEN

BACKGROUND: In surgical fields there has been a perceivable paradigm shift during the last decade concerning patient pre- and rehabilitation. Current literature suggests close interdisciplinary collaboration after complex procedures such as radical cystectomy in order to optimize perioperative patient care for the benefit of "fast-track" surgery. OBJECTIVES: To compose a catalogue of standardized measures after radical cystectomy based on guidelines set by the ERAS®-Society. RESULTS: The protocol commences with preoperative education in order to improve the physical and psychological condition of the patient. Crucial aspects in peri- and postoperative patient care are gentle surgical technique, adequate pain management, early mobilization and oral food intake, early removal of drains and foreign material and a seamless return to normal, daily life. CONCLUSIONS: Prospective data analysis will be the next step in order to establish the effectiveness of the protocol especially regarding postoperative complications and median duration of hospital stay.


Asunto(s)
Cistectomía , Neoplasias de la Vejiga Urinaria , Centros Médicos Académicos , Recuperación Mejorada Después de la Cirugía , Humanos , Tiempo de Internación , Complicaciones Posoperatorias/prevención & control , Estudios Prospectivos , Neoplasias de la Vejiga Urinaria/cirugía
19.
Urologe A ; 59(1): 65-71, 2020 Jan.
Artículo en Alemán | MEDLINE | ID: mdl-31741004

RESUMEN

Due to a safety alert issued by the US Food and Drug Administration (FDA) in 2011 for transvaginal mesh implants to treat female prolapse as a result of numerous reports of complications such as infection, chronic pain, dyspareunia, vaginal erosion, shrinkage and erosion into other organs nearly all industrial products have been withdrawn from the market in the meantime. The United Kingdom, Australia, and New Zealand extended warnings and prohibitions even on the implantation of midurethral slings (TVT, TOT). In view of these current international controversies regarding the use of implanted materials for the treatment of stress incontinence and prolapse and the lack of clear guidelines for the use of biomaterials, the opinion of the Working Group on Urological Functional Diagnostics and Female Urology should provide clarity. The Opinion is based on the SCENIHR Report of the "European Commission's Scientific Committee on Emerging and Newly Identified Health Risks", the "Consensus Statement of the European Urology Association and the European Urogynaecological Association on the Use of Implanted Materials for Treating Pelvic Organ Prolapse and Stress Urinary Incontinence" and in compliance with relevant EAU and national guidelines and the opinion of the Association for Urogynaecology and Plastic Pelvic Floor Reconstruction (AGUB eV). In addition, recommendations are given for the future handling of implants of slings and meshes for the treatment of stress incontinence and prolapse from a urologic viewpoint.


Asunto(s)
Prolapso de Órgano Pélvico/cirugía , Cabestrillo Suburetral/efectos adversos , Mallas Quirúrgicas/efectos adversos , Incontinencia Urinaria de Esfuerzo/cirugía , Procedimientos Quirúrgicos Urológicos/instrumentación , Femenino , Alemania , Humanos
20.
Urologe A ; 48(5): 480-6, 2009 May.
Artículo en Alemán | MEDLINE | ID: mdl-19421798

RESUMEN

The introduction of tension-free vaginal tapes has led to a complete change of surgical therapy in female urinary stress incontinence. Different materials are used. In many departments, the classic TVT procedure with retropubic placement of the tape has been replaced by transobturator procedures. The current discussion involving transobturator tapes focuses on the question of whether the inside-out technique or the outside-in technique leads to significantly different results. Current state of the art is that all techniques are almost comparable concerning treatment success and complications. Depending on possible pretreatments or concomitant diseases that result in a higher risk for complications, the decision for one technique can be taken individually for each patient. In patients suffering from recurrent stress urinary incontinence after implantation of a tension-free tape, the retropubic implantation of a TVT seems to be superior to a transobturator tape.


Asunto(s)
Cabestrillo Suburetral , Incontinencia Urinaria de Esfuerzo/cirugía , Femenino , Estudios de Seguimiento , Humanos , Evaluación de Procesos y Resultados en Atención de Salud , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/cirugía , Recurrencia , Reoperación , Incontinencia Urinaria de Esfuerzo/diagnóstico , Incontinencia Urinaria de Esfuerzo/etiología
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