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1.
Int J Cancer ; 150(11): 1861-1869, 2022 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-35076933

RESUMEN

There is no generally accepted screening strategy for prostate cancer (PCa). From February 2014 to December 2019 a randomized trial (PROBASE) recruited 46 642 men at age 45 to determine the efficacy of risk-adapted prostate-specific antigen-based (PSA) screening, starting at either 45 or 50 years. PSA tests are used to classify participants into a low (<1.5 ng/mL), intermediate (1.5-2.99 ng/mL) or high (≥3 ng/mL) risk group. In cases of confirmed PSA values ≥3 ng/mL participants are recommended a prostate biopsy with multiparametric magnetic resonance imaging (mpMRI). Half of the participants (N = 23 341) were offered PSA screening immediately at age 45; the other half (N = 23 301) were offered digital rectal examination (DRE) with delayed PSA screening at age 50. Of 23 301 participants who accepted baseline PSA testing in the immediate screening arm, 89.2% fell into the low, 9.3% into intermediate, and 1.5% (N = 344) into the high risk group. Repeat PSA measurement confirmed high-risk status for 186 men (0.8%), of whom 120 (64.5%) underwent a biopsy. A total of 48 PCas was detected (overall prevalence 0.2%), of which 15 had International Society of Uropathology (ISUP) grade 1, 29 had ISUP 2 and only 4 had ISUP ≥3 cancers. In the delayed screening arm, 23 194 participants were enrolled and 6537 underwent a DRE with 57 suspicious findings, two of which showed PCa (both ISUP 1; detection rate 0.03%). In conclusion, the prevalence of screen-detected aggressive (ISUP ≥3) PCa in 45-year-old men is very low. DRE did not turn out effective for early detection of PCa.


Asunto(s)
Detección Precoz del Cáncer , Neoplasias de la Próstata , Biopsia , Humanos , Masculino , Tamizaje Masivo/métodos , Persona de Mediana Edad , Polimetil Metacrilato , Antígeno Prostático Específico , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/epidemiología , Neoplasias de la Próstata/prevención & control
2.
Langenbecks Arch Surg ; 405(1): 97-106, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31938833

RESUMEN

PURPOSE: Despite the introduction of novel targeted therapies on patients with renal cell carcinoma, syn- and metachronous metastases (including hepatic lesions) are observed frequently and significantly influence patient survival. With introduction of targeted therapies as an effective alternative to surgery, therapeutical strategies in stage IV disease must be reevaluated. METHODS: This is a retrospective analysis of 40 patients undergoing hepatic resection of histologically confirmed RCC metastases at our institution between April 1993 and April 2017. RESULTS: The interval between nephrectomy for renal cell carcinoma and hepatic metastasectomy was 44.0 months (3.3-278.5). Liver resections of different extents were performed, including multivisceral resections. The median follow-up was 37.8 months (0.5-286.5). Tumor recurrence after resection of hepatic metastases occurred in 19 patients resulting in a median disease-free survival of 16.2 months (0.7-265.1) and a median overall survival of 37.8 months (0.5-286.5). Multivariable analysis identified multivisceral resection as an independent risk factor for disease-free and overall survival (p = 0.043 and p = 0.001, respectively). A longer interval between nephrectomy and hepatic metastasectomy was identified as an independent significant protective factor for overall survival (p < 0.001). Patients undergoing metastasectomy after introduction of sunitinib in Europe in 2006 (n = 15) showed a significantly longer overall survival (45.2 (9.1-111.0) versus 27.5 (0.5-286.52) months in the preceding era; p = 0.038). CONCLUSION: Hepatic metastasectomy, including major and extended resections, on patients with metastasized renal cell carcinoma can be performed safely and may facilitate long-term survival. Due to significant morbidity and increased mortality, multivisceral resections must be weighed against other options, such as targeted therapy.


Asunto(s)
Carcinoma de Células Renales/cirugía , Hepatectomía/métodos , Neoplasias Renales/patología , Neoplasias Hepáticas/cirugía , Metastasectomía/métodos , Terapia Molecular Dirigida , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/administración & dosificación , Carcinoma de Células Renales/tratamiento farmacológico , Carcinoma de Células Renales/secundario , Femenino , Hepatectomía/mortalidad , Humanos , Estimación de Kaplan-Meier , Neoplasias Renales/tratamiento farmacológico , Neoplasias Renales/cirugía , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/secundario , Masculino , Metastasectomía/mortalidad , Persona de Mediana Edad , Modelos Teóricos , Nefrectomía , Pronóstico , Estudios Retrospectivos , Medición de Riesgo , Sunitinib/uso terapéutico
3.
J Sex Med ; 16(7): 981-991, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31196838

RESUMEN

INTRODUCTION: Although low sexual desire is 1 of the most common sexual dysfunctions in men, there is a lack of studies investigating associated factors in large, population-based samples of middle-aged men. AIM: To survey the prevalence of low sexual desire in a population-based sample of 45-year-old German men and to evaluate associations with a broad set of factors. METHODS: Data were collected between April 2014-April 2016 within the German Male Sex-Study. Participants were asked to fill out questionnaires about 6 sociodemographic, 5 lifestyle, and 8 psychosocial factors, as well as 6 comorbidities and 4 factors of sexual behavior. Simple and multiple logistic regressions were used to assess potential explanatory factors. MAIN OUTCOME MEASURES: We found a notable prevalence of low sexual desire in middle-aged men and detected associations with various factors. RESULTS: 12,646 men were included in the analysis, and prevalence of low sexual desire was 4.7%. In the multiple logistic regression with backward elimination, 8 of 29 factors were left in the final model. Men having ≥2 children, higher frequency of solo-masturbation, perceived importance of sexuality, and higher sexual self-esteem were less likely to have low sexual desire. Premature ejaculation, erectile dysfunction, and lower urinary tract symptoms were associated with low sexual desire. CLINICAL IMPLICATIONS: Low sexual desire is common in middle-aged men, and associating factors that can potentially be modified should be considered during assessment and treatment of sexual desire disorders. STRENGTHS & LIMITATIONS: The strength of our study is the large, population-based sample of middle-aged men and the broad set of assessed factors. However, because of being part of a prostate cancer screening trial, a recruiting bias is arguable. CONCLUSION: Our study revealed that low sexual desire among 45-year-old men is a common sexual dysfunction, with a prevalence of nearly 5% and might be affected by various factors, including sociodemographic and lifestyle factors, as well as comorbidities and sexual behavior. Meissner VH, Schroeter L, Köhn F-M, et al. Factors Associated with Low Sexual Desire in 45-Year-Old Men: Findings from the German Male Sex-Study. J Sex Med 2019;16:981-991.


Asunto(s)
Disfunción Eréctil/epidemiología , Libido , Eyaculación Prematura/epidemiología , Conducta Sexual/estadística & datos numéricos , Humanos , Estilo de Vida , Modelos Logísticos , Síntomas del Sistema Urinario Inferior/epidemiología , Masculino , Persona de Mediana Edad , Prevalencia , Disfunciones Sexuales Psicológicas/epidemiología , Sexualidad , Encuestas y Cuestionarios
4.
Urol Int ; 101(3): 345-350, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30227439

RESUMEN

INTRODUCTION: Laparoendoscopic single-site surgery (LESS), robot-assisted (RA), and retroperitoneoscopic (R) surgery expand the armamentarium of minimally invasive surgery (MIS). As information on the use of these surgical approaches in daily routine is limited, we conducted a survey among German urologists. MATERIALS AND METHODS: In 2017, all urology departments in Germany received a questionnaire evaluating practice patterns of MIS in the retroperitoneum. Chi-Square test was performed for statistical analyses. The response rate was 51.1% (162/311) including 23 universities. RESULTS: R adrenalectomy and (partial) nephrectomy are performed by 32.7-40.1% of all departments. Transperitoneal LESS adrenalectomy and nephrectomy are performed by 8.6-11.7%. Retroperitoneal RA adrenalectomy and (partial) nephrectomy are performed by 6.2-13.0%. There was no difference in the R and LESS approach between (non)-university departments. Retroperitoneal RA access is more frequently used in university hospitals (all p < 0.01). If performed, mean counts within the last 12 months were < 5 for R, LESS, and RA adrenalectomy; and < 20 for R, LESS, and RA (partial) nephrectomy. CONCLUSION: Our survey provides a detailed insight into MIS in the retroperitoneum in German urology departments. Numbers of adrenalectomies as well as R, transperitoneal LESS and retroperitoneal RA procedures are low. Retroperitoneal RA surgery is more common in universities. Comprehensively, our survey proves that these approaches are not standard approaches yet.


Asunto(s)
Adrenalectomía/métodos , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Nefrectomía/métodos , Espacio Retroperitoneal/cirugía , Urología/métodos , Distribución de Chi-Cuadrado , Alemania , Humanos , Laparoscopía/métodos , Modelos Estadísticos , Peritoneo/cirugía , Factores de Riesgo , Encuestas y Cuestionarios
5.
Prostate ; 77(4): 396-405, 2017 03.
Artículo en Inglés | MEDLINE | ID: mdl-27862105

RESUMEN

BACKGROUND: Fresh tissue is mandatory to perform high-quality translation studies. Several models for tissue extraction from prostatectomy specimens without guidance by frozen sections are already introduced. However, little is known about the sampling efficacy of these models, which should provide representative tissue in adequate volumes, account for multifocality and heterogeneity of tumor, not violate the routine final pathological examination, and perform quickly without frozen section-based histological control. The aim of the study was to evaluate the sampling efficacy of the existing tissue extraction models without guidance by frozen sections ("blind") and to develop an optimized model for tissue extraction. METHODS: Five hundred thirty-three electronic maps of the tumor distribution in prostates from a single-center cohort of the patients subjected to radical prostatectomy were used for analysis. Six available models were evaluated in silico for their sampling efficacy. Additionally, a novel model achieving the best sampling efficacy was developed. RESULTS: The available models showed high efficacies for sampling "any part" from the tumor (up to 100%), but were uniformly low in efficacy to sample all tumor foci from the specimens (with the best technique sampling only 51.6% of the all tumor foci). The novel 4-level extraction model achieved a sampling efficacy of 93.1% for all tumor foci. CONCLUSIONS: The existing "blind" tissue extraction models from prostatectomy specimens without frozen sections control are suitable to target tumor tissues but these tissues do not represent the whole tumor. The novel 4-level model provides the highest sampling efficacy and a promising potential for integration into routine. Prostate 77: 396-405, 2017. © 2016 Wiley Periodicals, Inc.


Asunto(s)
Bancos de Muestras Biológicas , Prostatectomía/métodos , Neoplasias de la Próstata/patología , Manejo de Especímenes/métodos , Bancos de Muestras Biológicas/normas , Estudios de Cohortes , Secciones por Congelación/métodos , Secciones por Congelación/normas , Humanos , Masculino , Prostatectomía/normas , Método Simple Ciego , Manejo de Especímenes/normas
6.
Curr Opin Urol ; 27(1): 56-61, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27533502

RESUMEN

PURPOSE OF REVIEW: There are multiple minimal invasive approaches to remove the adrenal gland. The purpose of this review is to summarize the most up-to-date findings about laparoscopic, retroperitoneoscopic, robot-assisted, and single-site adrenalectomy, and to define the most common approaches to the adrenal gland. RECENT FINDINGS: Laparoscopic adrenalectomy is the gold standard to remove adrenal tumors. New approaches are being explored to outperform the advantages of laparoscopic adrenalectomy. SUMMARY: Retroperitoneoscopic adrenalectomy, when performed by skilled surgeons, offers an alternative to the conventional laparoscopic approach, with better outcome. The robot-assisted and single-site approaches still need further studies to fully identify their roles in adrenalectomy.


Asunto(s)
Neoplasias de las Glándulas Suprarrenales/cirugía , Adrenalectomía/métodos , Laparoscopía/métodos , Procedimientos Quirúrgicos Mínimamente Invasivos , Espacio Retroperitoneal/diagnóstico por imagen , Procedimientos Quirúrgicos Robotizados , Neoplasias de las Glándulas Suprarrenales/patología , Adrenalectomía/efectos adversos , Adrenalectomía/tendencias , Humanos , Posicionamiento del Paciente , Selección de Paciente , Espacio Retroperitoneal/cirugía , Robótica , Resultado del Tratamiento
7.
Prostate ; 76(15): 1345-52, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-26864707

RESUMEN

BACKGROUND: To assess safety, pathologic response rate, and long-term oncologic outcomes of radical prostatectomy (RP) after neoadjuvant chemotherapy using reduced-dose docetaxel without androgen-deprivation therapy in prostate cancer (PCa) patients of intermediate- and high-risk groups. METHODS: Forty-four patients with PCa (PSA > 10 ng/ml, Gleason score 7 or more, or clinical stage cT2c or more) were included with a median follow-up of 11.4 years after RP. One group (NCT/RP) received neoadjuvant treatment 3-weekly with docetaxel (36 mg/m(2) for up to six cycles, 21 patients), the other (control) group (RP, 23 patients) received RP only. RESULTS: Toxicities were mild with grade 3 events not exceeding 10%. A statistically significant reduction of PSA > 50% post-chemotherapy was observed in 52.4% cases. Cancer-specific survival (CSS) was 90% in the NCT/RP group and 60.9% in the RP group (P = 0.042). The biochemical recurrence-free survival was 68.5% in the NCT/RP and 37.7% in the RP groups; overall survival was 75.5% and 54.6%, respectively (both P > 0.05). CONCLUSIONS: The use of neoadjuvant chemotherapy before RP in a selected regimen and dose represents a safe strategy and results in benefits in CSS. Given the limitations of the study, this concept should be evaluated in large, prospective, controlled studies. Prostate 76: 1345-1352, 2016. © 2016 Wiley Periodicals, Inc.


Asunto(s)
Antineoplásicos/administración & dosificación , Prostatectomía , Neoplasias de la Próstata/tratamiento farmacológico , Neoplasias de la Próstata/cirugía , Taxoides/administración & dosificación , Anciano , Terapia Combinada , Docetaxel , Relación Dosis-Respuesta a Droga , Estudios de Factibilidad , Humanos , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Neoplasias de la Próstata/patología , Resultado del Tratamiento
8.
World J Urol ; 33(3): 403-12, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24859775

RESUMEN

BACKGROUND: Nephron sparing surgery for renal tumors has evolved as the standard of care for resectable renal tumors. Laparoscopic partial nephrectomy (PN) has gained recognition after technical refinements were able to match the well-established criteria for open partial nephrectomy. Laparoendoscopic surgery (LESS) is one of the approaches to further minimize invasiveness of laparoscopic surgery. OBJECTIVE: We report our initial experience with LESS partial nephrectomy in single-incision transumbilical surgery technique (SITUS) in daily clinical practice. DESIGN, SETTING, AND PARTICIPANTS: From 2010, patients undergoing SITUS-PN were prospectively evaluated. Patients with small, solitary or multiple, exophytic-enhancing renal masses were selected, whereas patients with solitary kidney, endophytic or hilar tumors were excluded. Important clinical data, PADUA and RENAL score, were assessed prospectively. MEASUREMENTS: Patients' characteristics, perioperative, hematologic and pathologic data as well as pain evaluation using the visual analogue pain scale (VAPS) were assessed. RESULTS AND LIMITATIONS: A total of 13 patients underwent LESS-PN/SITUS-PN (6 right and 7 left renal units). One patient was converted to conventional laparoscopy requiring two additional ports to treat bleeding from renal vessels. Pathology revealed renal cell carcinoma in nine patients, oncocytoma in one and benign cyst in three patients. No positive surgical margin was observed. The mean blood loss was 2.1 g/dl [range 0.5-4.5 g/dl] in hemoglobin. Minimal discomfort was noted at discharge (VAPS = 0.2 ± 0.6 [range 0-2]/10]. CONCLUSION: LESS partial nephrectomy in SITUS technique is feasible for selected exophytic tumors and has been integrated into our armamentarium for nephron sparing minimally invasive surgical treatment.


Asunto(s)
Carcinoma de Células Renales/cirugía , Endoscopía/métodos , Neoplasias Renales/cirugía , Laparoscopía/métodos , Nefrectomía/métodos , Ombligo/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Pérdida de Sangre Quirúrgica/estadística & datos numéricos , Estudios de Factibilidad , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Dimensión del Dolor , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos , Resultado del Tratamiento
9.
World J Urol ; 33(4): 571-9, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24935098

RESUMEN

INTRODUCTION: Bladder cancer (BC) represents a growing health care problem worldwide. In times of tight budgets and an aging society, new strategies for the transurethral treatment of BC are needed. Laser devices used for tumor vaporization and/or en bloc resection provide an alternative to parvenu strategies. MATERIALS AND METHODS: Medline/Cochrane search was performed using following terms: bladder cancer, urothelial carcinoma, laser, en bloc, vaporization, photoablation, holmium, thulium, Ho:YAG, Tm:YAG, HoLRBT and TmLRBT. Last date of search was February 12, 2014. RESULTS: Eighteen publications in English were identified including 800 patients (Ho:YAG = 652 patients and Tm:YAG = 148 patients). Data on en bloc resection techniques were presented in 10 publications, 7 publications provided data of tumor vaporization and one publication presented data on both. Level of evidence based on SIGN is mainly 3 (non-analytic studies); only three studies are level 2 (prospective case control studies). Tumor vaporization seems to be a promising alternative for the treatment of recurrent tumors in selected patients. It can be performed in an office-based approach without the need of general anesthesia. The use of photodynamic diagnostic might enhance surgical quality. The principle of en bloc resection should provide accurate staging in most cases; however, data on this important aspect are missing. Peri- and postoperative complications are scarce. Due to the nature of the energy source, bladder perforation caused by obturator nerve reflex is highly unlikely when using lasers. There is a trend toward decreased infield recurrence rates. CONCLUSIONS: Lasers are potentially useful alternatives to conventional TURBT, but systematical assessments using standardized classification systems and well-designed RCTs are needed to make results comparable.


Asunto(s)
Carcinoma de Células Transicionales/cirugía , Holmio , Láseres de Estado Sólido/uso terapéutico , Tulio , Neoplasias de la Vejiga Urinaria/cirugía , Cistoscopía/métodos , Humanos , Terapia por Láser/métodos , Complicaciones Posoperatorias , Resultado del Tratamiento
10.
World J Urol ; 33(11): 1707-14, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25774003

RESUMEN

PURPOSE: To evaluate a novel system for MRI/TRUS fusion-guided biopsy for detection of prostate cancer (PCa) in patients with previous negative prostate biopsy and determine diagnostic accuracy when using the Prostate Imaging Reporting and Data System (PI-RADS) for multiparametric magnetic resonance imaging (mpMRI) as proposed by the European Society of Urogenital Radiology. METHODS: Thirty-nine men with clinical suspicion of PCa and history of previous prostate biopsy underwent mpMRI on a 3-T MRI. In total, 72 lesions were evaluated by the consensus of two radiologists. PI-RADS scores for each MRI sequence, the sum of the PI-RADS scores and the global PI-RADS were determined. MRI/TRUS fusion-guided targeted biopsy was performed using the BioJet™ software combined with a transrectal ultrasound system. Image fusion was based on rigid registration. PI-RADS scores of the dominant lesion were compared with histopathological results. Diagnostic accuracy was determined using receiver operating characteristic curve analysis. RESULTS: MRI/TRUS fusion-guided biopsy was reliable and successful for 71 out of 72 lesions. The global PI-RADS score of the dominant lesion was significantly higher in patients with PCa (4.0 ± 1.3) compared to patients with negative histopathology (2.6 ± 0.8; p = 0.0006). Using a global PI-RADS score cut-off ≥4, a sensitivity of 85 %, a specificity of 82 % and a negative predictive value of 92 % were achieved. CONCLUSIONS: The described fusion system is dependable and efficient for targeted MRI/TRUS fusion-guided biopsy. mpMRI PI-RADS scores combined with a novel real-time MRI/TRUS fusion system facilitate sufficient diagnosis of PCa with high sensitivity and specificity.


Asunto(s)
Endosonografía/métodos , Biopsia Guiada por Imagen/métodos , Imagenología Tridimensional/métodos , Imagen por Resonancia Magnética Intervencional/métodos , Neoplasias de la Próstata/diagnóstico , Programas Informáticos , Anciano , Humanos , Masculino , Persona de Mediana Edad , Próstata/diagnóstico por imagen , Próstata/patología , Curva ROC , Recto , Reproducibilidad de los Resultados
11.
Urol Int ; 95(3): 336-45, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26160360

RESUMEN

BACKGROUND: Robotic-assisted laparoscopy (RAL) is being widely accepted in the field of urology as a replacement for conventional laparoscopy (CL). Nevertheless, the process of its integration in clinical routines has been rather spontaneous. OBJECTIVE: To determine the prevalence of robotic systems (RS) in urological clinics in Germany, Austria and Switzerland, the acceptance of RAL among urologists as a replacement for CL and its current use for 25 different urological indications. MATERIALS AND METHODS: To elucidate the practice patterns of RAL, a survey at hospitals in Germany, Austria and Switzerland was conducted. All surgically active urology departments in Germany (303), Austria (37) and Switzerland (84) received a questionnaire with questions related to the one-year period prior to the survey. RESULTS: The response rate was 63%. Among the participants, 43% were universities, 45% were tertiary care centres, and 8% were secondary care hospitals. A total of 60 RS (Germany 35, Austria 8, Switzerland 17) were available, and the majority (68%) were operated under public ownership. The perception of RAL and the anticipated superiority of RAL significantly differed between robotic and non-robotic surgeons. For only two urologic indications were more than 50% of the procedures performed using RAL: pyeloplasty (58%) and transperitoneal radical prostatectomy (75%). On average, 35% of robotic surgeons and only 14% of non-robotic surgeons anticipated RAL superiority in some of the 25 indications. CONCLUSIONS: This survey provides a detailed insight into RAL implementation in Germany, Austria and Switzerland. RAL is currently limited to a few urological indications with a small number of high-volume robotic centres. These results might suggest that a saturation of clinics using RS has been achieved but that the existing robotic capacities are being utilized ineffectively. The possible reasons for this finding are discussed, and certain strategies to solve these problems are offered.


Asunto(s)
Laparoscopía/métodos , Pautas de la Práctica en Medicina/estadística & datos numéricos , Procedimientos Quirúrgicos Robotizados/estadística & datos numéricos , Urología , Adulto , Austria , Alemania , Humanos , Persona de Mediana Edad , Encuestas y Cuestionarios , Suiza
12.
Int Braz J Urol ; 41(3): 455-65, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26200563

RESUMEN

PURPOSE: To evaluate continence after radical prostatectomy in prostate cancer patients, in whom a new method of the bladder neck reconstruction (BNR) using deep dorsal stitch was implemented (deep single stitch through all bladder layers directly dorsal to the bladder opening after ″ tennis racket″ reconstruction) and to provide justification for its use by means of anatomical study in cadavers. MATERIAL AND METHODS: Open radical retropubic prostatectomy was performed in 84 patients: 39 patients with a new BNR method used to improve continence and control group of 45 patients with standard ″tennis racket″ BNR. Median follow-up was 14 months in control group and 12 months in study group. Continence recovery was accessed early postoperatively and every 3 months thereafter. Anatomical study was performed on 2 male fresh cadavers reproducing two different BNR techniques to clarify any underlying continence related mechanisms. RESULTS: Patients with new BNR achieved full continence significantly faster (p=0.041), but the continence rates after 12 months were similar between groups. The severity of incontinence up to month 9 was significantly reduced in BNR group. The anastomotic stricture rate was not affected. Applying new BNR to the cadaver model revealed effects on early continence, namely presence of proximal passive closure mechanism in area of bladder neck. CONCLUSIONS: Continence in patients with the new BNR method using deep dorsal stitch recovered significantly faster. Moreover, a reduced grade of residual incontinence was documented. The effect was non-significant at month 12 of follow-up, meaning that only early effect was present.


Asunto(s)
Prostatectomía/métodos , Neoplasias de la Próstata/cirugía , Vejiga Urinaria/cirugía , Anciano , Estudios de Seguimiento , Humanos , Masculino , Ilustración Médica , Persona de Mediana Edad , Clasificación del Tumor , Estadificación de Neoplasias , Neoplasias de la Próstata/patología , Reproducibilidad de los Resultados , Estadísticas no Paramétricas , Técnicas de Sutura , Factores de Tiempo , Resultado del Tratamiento , Uretra/cirugía , Incontinencia Urinaria/cirugía
13.
World J Urol ; 32(3): 783-9, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23979149

RESUMEN

PURPOSE: Percutaneous renal surgery (PRS) is a challenging procedure for urologic surgeons and requires a large variety of different skills. Our objective was to improve the preexisting porcine kidney-training model for percutaneous renal access and PRS. METHODS: For our biologic training model, we use porcine kidneys with preserved ureter. The ureter was dissected, stones were placed into the collecting system using a 16, 5F Amplatz sheath, and a 12Ch indwelling catheter was placed in the ureter for further irrigation with blue-dyed saline. The kidney was placed between two porcine full-thickness skin lobes in an existing laparoscopy trainer (SITUS Box). The kidney was punctured with ultrasound guidance, and minimally invasive percutaneous nephrolithotomy (MIP) was then performed as previously described. The model was evaluated in MIP training courses, which are regularly held at the Hannover Medical School. RESULTS: All trainees were urologists with experience in endourologic surgery. Eleven participants were trained in this model. Percutaneous puncture under ultrasonographic guidance and following intrarenal surgery was successful in all 11 (100 %) cases. Therefore, all participants rated the model useful for simulating percutaneous renal surgery. CONCLUSION: Compared to recently published models, this new porcine kidney model is easy to prepare and is cost-effective by using standard material. Moreover, it provides realistic and reproducible practice for PRS in the laboratory. Unfavorably, the described organ model requires an existing laparoscopy training system. Comprehensively, the presented organ model approximates the natural retroperitoneal circumstances precisely by using the two full-thickness skin flaps with the fatty subcutaneous tissue.


Asunto(s)
Educación Médica Continua/métodos , Enfermedades Renales/cirugía , Laparoscopía/educación , Modelos Teóricos , Nefrectomía/educación , Nefrostomía Percutánea/métodos , Urología/educación , Animales , Modelos Animales de Enfermedad , Endoscopía/educación , Endoscopía/métodos , Diseño de Equipo , Humanos , Nefrectomía/métodos , Porcinos
14.
World J Urol ; 32(6): 1363-74, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24493294

RESUMEN

PURPOSE: Laparoscopy introduction has dramatically changed urology. Novel techniques, such as laparoendoscopic single-site surgery (LESS) and natural orifice translumenal endoscopic surgery (NOTES), might also have substantial influence. This 2012 survey evaluated present laparoscopy use, its appraisal among urologic surgeons, laparoscopy training, and use of new techniques. Results were compared to the previous surveys, demonstrating the 10-year development of laparoscopy. METHODS: A detailed questionnaire regarding demographic data, laparoscopy use, attitudes concerning laparoscopy, and novel techniques was send to 424 departments in Germany, Austria, and Switzerland. Procedures performed in 25 indications were quantitatively evaluated. RESULTS: The response rate was 63 % (269). Eighty-six percent of the respondents reported performing laparoscopy, compared to 54 % in 2002. Only 16 % expected economic advantages with laparoscopy, whereas 67 % expected shorter hospitalization. Seventy percent of responders anticipated comparable functional and oncological results between laparoscopic procedures and open surgery. Slow learning curves (81 %) and insufficient training facilities (32 %) were reported to impair laparoscopic surgery. On average, laparoscopic and non-laparoscopic surgical teams consisted of 2.5 and 3.5 members, respectively. LESS procedures were performed at 15 % of institutions. Twenty-two percent of respondents considered NOTES techniques valuable for future urology. Few indications (laparoscopic prostatectomies or nephrectomies) were performed frequently in specialized centers, and the rapidly increasing procedure numbers observed between 2002 and 2007 had dropped to a mild accretion. The results demonstrate broad acceptance of laparoscopy in German urologic surgery, depict the need for structured training facilities, and indicate limited impact of novel techniques (LESS and NOTES). CONCLUSIONS: The survey demonstrates the 10-year development of urologic laparoscopy and the broad acceptance of laparoscopic techniques.


Asunto(s)
Actitud del Personal de Salud , Laparoscopía , Procedimientos Quirúrgicos Urológicos , Urología , Adulto , Austria , Femenino , Alemania , Humanos , Laparoscopía/educación , Laparoscopía/métodos , Laparoscopía/estadística & datos numéricos , Curva de Aprendizaje , Masculino , Persona de Mediana Edad , Cirugía Endoscópica por Orificios Naturales , Selección de Paciente , Pautas de la Práctica en Medicina , Encuestas y Cuestionarios , Suiza
15.
World J Urol ; 32(4): 931-8, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24343229

RESUMEN

PURPOSE: The purpose of this study was to analyze the efficacy of two different biopsy forceps with respect to their functionality and quality for histological assessment of upper urinary tract biopsies. METHODS: We compared flow rates, active deflection angle and histological quality of specimens taken from upper urinary tract biopsies of 40 consecutively treated patients between October 2011 and October 2012. Two different biopsy forceps [group A = 20 patients: "Piranha (®) " (Boston Scientific, Natick, USA) versus group B = 20 patients: "EF-120-00-3F" (Euromedical GmbH, Siegsdorf, GER)] were assessed. RESULTS: The specimens obtained with the "EF-120-00-3F" were superior in terms of tissue preservation such as intact urothelium/tissue fragmentation and the prevention of artifacts due to tissue compression (existence of artifacts/nucleus evaluation). Furthermore, due to superiority of tissue preservation, tissues obtained with the "EF-120-00-3F" showed better tissue orientation in the sense of anatomic evaluation of invasion and deep layer involvement. Irrigation flow rates did not differ significantly while deflection angle was more impaired with the "Piranha" biopsy forceps. No difference was observed with the handling of both biopsy forceps. CONCLUSIONS: We conclude that the "EF-120-00-3F" biopsy forceps represent a valuable modification of antegradely insertable instruments that qualifies for improved and correct staging as well as diagnosis of upper urinary specimens in comparison with standard biopsy forcipes.


Asunto(s)
Biopsia/instrumentación , Instrumentos Quirúrgicos/normas , Sistema Urinario/patología , Adulto , Anciano , Anciano de 80 o más Años , Biopsia/efectos adversos , Biopsia/métodos , Carcinoma de Células Transicionales/diagnóstico , Carcinoma de Células Transicionales/patología , Diseño de Equipo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Manejo de Especímenes/efectos adversos , Manejo de Especímenes/instrumentación , Manejo de Especímenes/métodos , Instrumentos Quirúrgicos/efectos adversos , Neoplasias Urológicas/diagnóstico , Neoplasias Urológicas/patología
16.
J Laparoendosc Adv Surg Tech A ; 34(3): 239-245, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38252556

RESUMEN

Purpose: To evaluate the utilization of novel Avatera system in urological operations according to the IDEAL-D framework recommendations for high-risk invasive surgical devices. Materials and Methods: Three surgeons attempted to perform 23 upper and lower urinary tract operations on human cadavers and in live porcine models using the Avatera system. Total operative time and the duration of the substeps were evaluated. Surgical performance was assessed with the Global Evaluative Assessment of Robotic Skills (GEARS) score. Suturing was rated using the technical checklist for the assessment of suturing in robotic surgery. Attending surgeons rated their satisfaction with the Avatera system on a scale of 1-5. Results and Limitation: Seventeen out of 18 operations performed on cadavers were completed, while one pyeloplasty was discontinued. All five operations performed in porcine models were completed. Although 1 pig was euthanized on the fifth postoperative day, its symptoms were unrelated to surgery. Mean GEARS and Suturing scores in the upper urinary tract were 29 ± 0.7 and 29.5 ± 0.95, respectively, and in the lower urinary 28.5 ± 1.2 and 29.5 ± 0.5, respectively. Surgeons' satisfaction was high or very high for all procedures. Conclusions: The Avatera system was associated with good surgical performance and high surgeons' satisfaction rates. All urological procedures performed were shown to be feasible, with comparable risks to other robot-assisted surgery systems.


Asunto(s)
Procedimientos Quirúrgicos Robotizados , Robótica , Masculino , Humanos , Animales , Porcinos , Próstata/cirugía , Vejiga Urinaria , Prostatectomía/métodos , Procedimientos Quirúrgicos Robotizados/métodos , Cadáver , Competencia Clínica
17.
Aktuelle Urol ; 53(5): 416-422, 2022 09.
Artículo en Alemán | MEDLINE | ID: mdl-34670316

RESUMEN

BACKGROUND: In recent years great improvements in the diagnosis and differentiation of hereditary syndroms with predisposition for kidney cancer have been achieved. It has been assumed that 5-8% of all kidney cancer have a hereditary origin. In reality, this number will probably be much higher as many genetic aspects of kidney cancer are still not entirely known. Hereditary kidney cancer usually shows two characteristic properties: While the median age of diagnosis of sporadic renal cell carcinoma is 64 years, patients with a hereditary tumor predisposition are about 20 years younger at the time of diagnosis. Additionally, their tumors often occur multifocal/bilateral. Therefore, a special management with extended diagnostics is necessary for these young kidney cancer patients. In literature many reports on hereditary syndromes with kidney cancer predisposition exist. Though, these papers usually put their focus on single syndromes rather than on the aspects of kidney cancer. The goal of this article is to present the practicing urologist with a compact overview of the most important hereditary syndromes with kidney cancer predisposition and by this improve the primary diagnostic and treatment of renal cancer patients and their relatives. MATERIAL/METHODS: We conducted a literature search on the five most important hereditary syndromes with kidney cancer association and summarized the results in a chart. Additionally, we formed the acronym ToSCaNA combining the most important extrarenal manifestations of the syndromes. Based on this data, a diagnostic workflow and treatment path was established. RESULTS: All in all, hereditary kidney cancer is a rare entity, which nonetheless could present as a significant number in high-volume centers. For doctors who scarcely get in contact with these types of tumors, the acronym and workflow could pose a valuable asset for their clinical diagnostic portfolio. An early identification and diagnostic work-up of affected patients and their relatives is crucial for appropriate treatment and surveillance and allows the identification/treatment of additionally affected relatives. CONCLUSION: In patients with young age of onset and multifocal/bilateral occurrence of kidney cancer, hereditary syndromes should always be considered. The initial suspicion of a hereditary genesis of the cancer can be further evaluated by the acronym ToSCaNA and the presented workflow.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Síndromes Neoplásicos Hereditarios , Carcinoma de Células Renales/diagnóstico , Carcinoma de Células Renales/genética , Carcinoma de Células Renales/patología , Predisposición Genética a la Enfermedad/genética , Humanos , Neoplasias Renales/diagnóstico , Neoplasias Renales/genética , Neoplasias Renales/patología , Persona de Mediana Edad , Síndromes Neoplásicos Hereditarios/diagnóstico , Síndromes Neoplásicos Hereditarios/genética , Síndromes Neoplásicos Hereditarios/patología
18.
Med Sci (Basel) ; 10(3)2022 06 24.
Artículo en Inglés | MEDLINE | ID: mdl-35893117

RESUMEN

Surgical disciplines are affected by an increasing shortage of young doctors. Studies show that formerly interested students decide against a career in surgical disciplines at the end of their studies or during practical year. Measures to counteract this development are urgently needed. As a joint project between gynecology, urology, and general surgery, SOCIUS mentoring was designed to prepare and encourage students for a career in surgical oncology. The structured curriculum of SOCIUS mentoring contains six modules, including surgical skills, soft skills, mentoring, theory, clinical visitation, and congress participation and runs over one year. Effects on confidence towards physician skills and plans for a future career were evaluated with questionnaires. After participation, students reported increased confidence in surgical and soft skills. In addition, participants noted that they have specified their career goals and gained more confidence in surgery, as well as seeing more development potential for a career in surgery. We describe the implementation of a novel extracurricular program for motivated students that combines individual mentoring with surgical and soft skills training. Due to its modular structure, this concept can easily be transferred to other disciplines. SOCIUS mentoring, with its combination of mentoring and skills training, is a promising measure to prepare and motivate students for their surgical career and thus counteract the shortage of young talent.


Asunto(s)
Tutoría , Oncólogos , Estudiantes de Medicina , Selección de Profesión , Curriculum , Humanos
19.
Eur Urol Open Sci ; 46: 45-52, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36506259

RESUMEN

Background: Robot-assisted partial nephrectomy (RAPN) is a challenging procedure that is influenced by a multitude of factors. Objective: To assess the impact of prior surgical experience on perioperative outcomes in RAPN. Design setting and participants: In this retrospective multicenter study, results for 2548 RAPNs performed by 25 surgeons at eight robotic referral centers were analyzed. Perioperative data for all consecutive RAPNs from the start of each individual surgeon's experience were collected, as well as the number of prior open or laparoscopic kidney surgeries, pelvic surgeries (open, laparoscopic, robotic), and other robotic interventions. Intervention: Transperitoneal or retroperitoneal RAPN. Outcome measurements and statistical analysis: The impact of prior surgical experience on operative time, warm ischemia time (WIT), major complications, and margin, ischemia, complication (MIC) score (negative surgical margins, WIT ≤20 min, no major complications) was assessed via univariate and multivariable regression analyses accounting for age, gender, body mass index (BMI), American Society of Anesthesiologists score, PADUA score, and RAPN experience. Results and limitations: BMI, PADUA score, and surgical experience in RAPN had a strong impact on perioperative outcomes. A plateau effect for the learning curve was not observed. Prior laparoscopic kidney surgery significantly reduced the operative time (p < 0.001) and WIT (p < 0.001) and improved the MIC rate (p = 0.022). A greater number of prior robotic pelvic interventions decreased WIT (p = 0.011) and the rate of major complications (p < 0.001) and increased the MIC rate (p = 0.011), while prior experience in open kidney surgery did not. One limitation is the short-term follow-up. Conclusions: Mastering of RAPN is an ongoing learning process. However, prior experience in laparoscopic kidney and robot-assisted pelvic surgery seems to improve perioperative outcomes for surgeons when starting with RAPN, while experience in open surgery might not be crucial. Patient summary: In this multicenter analysis, we found that a high degree of experience in keyhole kidney surgery and robot-assisted pelvic surgery helps surgeons in achieving good initial outcomes when starting robot-assisted kidney surgery.

20.
World J Urol ; 29(4): 433-42, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-21544662

RESUMEN

INTRODUCTION: Bladder cancer is the second most common malignancy of urologic tumors. Back in 1976, lasers were added to the endourological armetarium for bladder tumor treatment. Despite nowadays' standard procedure for staging and treating non-muscle invasive bladder tumor by transurethral resection of bladder tumors (TURB) via a wire loop, laser resection techniques for bladder tumor came back in focus with the introduction of Ho:YAG and not to mention recently Tm:YAG lasers. This review aims to display the current evidence for these techniques. MATERIALS AND METHODS: Throughout April 2010, MEDLINE and the Cochrane central register of controlled trials were searched previously for the following terms: "Laser, resection, ablation, coagulation, Nd:YAG Neodym, HoYAG: Holmium, Tm:YAG Thulium and transitional carcinoma, bladder, intravesical." RESULTS: Eleven articles on Ho:YAG and 7 on Tm:YAG were identified. Searches by Cochrane online library resulted in no available manuscripts. CONCLUSION: Today, Nd:YAG does not play any role in treatment of lower urinary tract transitional cell carcinoma. Ho:YAG and Tm:YAG seem to offer alternatives in the treatment of bladder cancer, but still to prove their potential in larger prospective randomized controlled studies with long-term follow-up. Future expectations will show whether en bloc resection of tumors are preferable to the traditional "incise and scatter" resection technique, in which is contrary to all oncological surgical principles. For the primary targets, here are within first-time clearance of disease, in addition to low in-fields and out-of-fields recurrence rates.


Asunto(s)
Carcinoma de Células Transicionales/patología , Carcinoma de Células Transicionales/cirugía , Láseres de Estado Sólido/uso terapéutico , Neoplasias de la Vejiga Urinaria/cirugía , Holmio , Humanos , Neodimio , Invasividad Neoplásica , Tulio , Resultado del Tratamiento
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