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1.
Cancer ; 2024 Jun 04.
Artículo en Inglés | MEDLINE | ID: mdl-38837334

RESUMEN

BACKGROUND: Despite mandated insurance coverage since 2006 and robust health infrastructure in urban settings with high concentrations of minority patients, race-based disparities in prostate cancer (PCa) treatment persist in Massachusetts. In this qualitative study, the authors sought to identify factors driving inequities in PCa treatment in Massachusetts. METHODS: Four hospitals offering PCa treatment in Massachusetts were selected using a case-mix approach. Purposive sampling was used to conduct semistructured interviews with hospital stakeholders. Additional interviews were conducted with representatives from grassroots organizations providing PCa education. Two study staff coded the interviews to identify major themes and recurrent patterns. RESULTS: Of the 35 informants invited, 25 participated in the study. Although national disparities in PCa outcomes were readily discussed, one half of the informants were unaware that PCa disparities existed in Massachusetts. Informants and grassroots organization representatives acknowledged that patients with PCa are willing to face transportation barriers to receive treatment from trusted and accommodating institutions. Except for chief equity officers, most health care providers lacked knowledge on accessing or using metrics regarding racial disparities in cancer outcomes. Although community outreach was recognized as a potential strategy to reduce treatment disparities and engender trust, informants were often unable to provide a clear implementation plan. CONCLUSIONS: This statewide qualitative study builds on existing quantitative data on the nature and extent of disparities. It highlights knowledge gaps in recognizing and addressing racial disparities in PCa treatment in Massachusetts. Improved provider awareness, the use of disparity metrics, and strategic community engagement may ensure equitable access to PCa treatment. PLAIN LANGUAGE SUMMARY: Despite mandated insurance and urban health care access, racial disparities in prostate cancer treatment persist in Massachusetts. This qualitative study revealed that, although national disparities were acknowledged, awareness about local disparities are lacking. Stakeholders highlighted the importance of ancillary services, including translators, rideshares, and navigators, in the delivery of care. In addition, whereas hospital stakeholders were aware of collected equity outcomes, they were unsure whether and who is monitoring equity metrics. Furthermore, stakeholders agreed that community outreach showed promise in ensuring equitable access to prostate cancer treatment. Nevertheless, most interviewed stakeholders lacked clear implementation plans.

2.
Prostate ; 82(10): 1005-1015, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35403746

RESUMEN

In patients with prostate cancer, the duration of remission after treatment with androgen deprivation therapies (ADTs) varies dramatically. Clinical experience has demonstrated difficulties in predicting individual risk for progression due to chemoresistance. Drug combinations that inhibit androgen biosynthesis (e.g., abiraterone acetate) and androgen signaling (e.g., enzalutamide or apalutamide) have proven so effective that new forms of ADT resistance are emerging. In particular, prostate cancers with a neuroendocrine transcriptional signature, which demonstrate greater plasticity, and potentially, increased predisposition to metastasize, are becoming more prevalent. Notably, these subtypes had in fact been relatively rare before the widespread success of novel ADT regimens. Therefore, better understanding of these resistance mechanisms and potential alternative treatments are necessary to improve progression-free survival for patients treated with ADT. Targeting the bromodomain and extra-terminal (BET) protein family, specifically BRD4, with newer investigational agents may represent one such option. Several families of chromatin modifiers appear to be involved in ADT resistance and targeting these pathways could also offer novel approaches. However, the limited transcriptional and genomic information on ADT resistance mechanisms, and a serious lack of patient diversity in clinical trials, demand profiling of a much broader clinical and demographic range of patients, before robust conclusions can be drawn and a clear direction established.


Asunto(s)
Antagonistas de Andrógenos , Proteínas del Tejido Nervioso/metabolismo , Neoplasias de la Próstata Resistentes a la Castración , Receptores de Superficie Celular/metabolismo , Antagonistas de Andrógenos/uso terapéutico , Andrógenos , Proteínas de Ciclo Celular , Resistencia a Antineoplásicos/genética , Humanos , Masculino , Proteínas Nucleares , Neoplasias de la Próstata Resistentes a la Castración/tratamiento farmacológico , Neoplasias de la Próstata Resistentes a la Castración/genética , Neoplasias de la Próstata Resistentes a la Castración/metabolismo , Factores de Transcripción , Resultado del Tratamiento
3.
BJU Int ; 127(6): 636-644, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33166036

RESUMEN

OBJECTIVES: To examine the effects of racial residential segregation and structural racism on the diagnosis, treatment, and outcomes of patients with prostate cancer. PATIENTS AND METHODS: This retrospective cohort study examined men diagnosed with prostate cancer between 2005 and 2015. We collected data from Black and White men, aged ≥30 years, living within the 100 most populous counties participating in the Surveillance, Epidemiology, and End Results programme, a nationally representative dataset. The racial Index of Dissimilarity, a validated measure of segregation, was the primary exposure of interest. Outcomes of interest included advanced stage at diagnosis (Stage IV), surgery for localised disease (Stage I-II), and 10-year overall and cancer-specific survival. Multivariable Poisson regression analyses with robust error variance estimated the relative risk (RR) of advanced stage at diagnosis and surgery for localised disease at differing levels of segregation. Survival analysis was performed using competing hazards analysis. RESULTS: Multivariable models estimating stage at diagnosis showed that the disparities between Black and White men disappeared at low levels of segregation. Disparities in receiving surgery for localised disease persisted across all levels of segregation. In racially stratified analyses, segregation had no effect on stage at diagnosis or surgical resection for Black patients. White patients saw a 56% (RR 0.42, P < 0.001) reduced risk of presenting at advanced stage and 20% increased likelihood (RR 1.20, P < 0.001) of surgery for localised disease. Black patients in the lowest segregation areas had the lowest overall mortality, but the highest cancer-specific mortality. CONCLUSIONS: Our study provides evidence that residential segregation has a significant impact on Black-White disparities in prostate cancer, likely through improved outcomes for White patients and worse outcomes for Black patients in more segregated areas. These findings suggest that mitigating segregation and the downstream effects of socioeconomic factors could alleviate these disparities.


Asunto(s)
Negro o Afroamericano/estadística & datos numéricos , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/terapia , Características de la Residencia , Segregación Social , Población Blanca/estadística & datos numéricos , Anciano , Estudios de Cohortes , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Estados Unidos
4.
Int Braz J Urol ; 46(1): 108-115, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31851467

RESUMEN

OBJECTIVE: Cystectomy with urinary diversion is the gold standard for muscle invasive bladder cancer. It also may be performed as part of pelvic exenteration for non-urologic malignancy, neurogenic bladder dysfunction, and chronic conditions that result in a non-functional bladder (e.g., interstitial cystitis, radiation cystitis). Our objective is to describe the surgical technique of urinary diversion using large intestine as a conduit whilst creating an end colostomy, thereby avoiding a primary bowel anastomosis and to show its applicability with respect to urologic conditions. MATERIALS AND METHODS: We retrospectively reviewed five cases from a single institution that utilized the described method of urinary diversion with large intestine. We describe operative times, hospital length of stay (LOS), and describe post-operative complications. RESULTS: Five patients with a variety of urologic and oncologic pathology underwent the described procedures. Their operative times ranged from 5 hours to 11 hours and one patient experienced a Clavien III complication. CONCLUSION: We describe five patients who underwent this procedure for various medical indications, and describe their outcomes, and believe dual diversion of urinary and gastrointestinal systems with colon as a urinary conduit to be an excellent surgical option for the appropriate surgical candidate.


Asunto(s)
Colon Sigmoide/cirugía , Colostomía/métodos , Derivación Urinaria/métodos , Adulto , Anastomosis Quirúrgica , Cistectomía/métodos , Humanos , Tiempo de Internación , Masculino , Ilustración Médica , Persona de Mediana Edad , Tempo Operativo , Reproducibilidad de los Resultados , Resultado del Tratamiento , Enfermedades de la Vejiga Urinaria/cirugía
5.
Can J Urol ; 25(5): 9497-9502, 2018 10.
Artículo en Inglés | MEDLINE | ID: mdl-30281007

RESUMEN

INTRODUCTION: This study aims to compare outcomes of percutaneous nephrolithotomy (PCNL) performed with a nephrostomy tube placed prior to surgery versus access at the time of surgery. MATERIALS AND METHODS: Between March 2005 and August 2014, 233 PCNLs were performed. One hundred and nine of those cases underwent placement of nephrostomy tubes at least 1 day prior to surgery (Group A), and the remaining 124 cases were performed in which access was obtained at the time of PCNL (Group B). Patient demographics, comorbidities, stone size, sepsis rates, and additional complication rates including bleeding and inability to access stone were compared. RESULTS: There were no significant differences in patient demographics, stone size, or comorbidities when comparing the two groups. Success rates were not significantly different, 92.7% in Group A compared to 94.4% in Group B. Similarly, there was no significant difference in complication rates or ICU admissions. The rate of sepsis in Group A was 1.83% compared to 2.42% in Group B, which showed no statistical significance. Notably, there were more patients with neurogenic bladders in the pre-placement group (p = 0.05). CONCLUSION: Pre-placement of a nephrostomy tube prior to PCNL did not result in a decreased incidence of complications or sepsis and did not demonstrate increased success rates. Patients with neurogenic bladders may be more vulnerable to suffering from sepsis and therefore role of timing of nephrostomy tube placement must be further studied.


Asunto(s)
Cálculos Renales/cirugía , Nefrolitotomía Percutánea/métodos , Nefrostomía Percutánea , Complicaciones Posoperatorias/etiología , Femenino , Humanos , Unidades de Cuidados Intensivos , Cálculos Renales/complicaciones , Masculino , Persona de Mediana Edad , Nefrolitotomía Percutánea/efectos adversos , Nefrostomía Percutánea/efectos adversos , Admisión del Paciente , Estudios Retrospectivos , Sepsis/etiología , Factores de Tiempo , Resultado del Tratamiento , Vejiga Urinaria Neurogénica/complicaciones
6.
Urol Pract ; 8(2): 277-283, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37145616

RESUMEN

INTRODUCTION: We surveyed U.S. urology trainees to determine current prescribing practices after common endourological procedures. METHODS: An institutional review board approved, 22-item survey was distributed to all U.S. urology residents through the Society of Academic Urologists. The survey was divided into demographics including American Urological Association section, prescribing patterns after ureteroscopy, shockwave lithotripsy, percutaneous nephrolithotomy and transurethral prostate procedures, as well as attitudes surrounding opioid prescription. RESULTS: A total of 148 U.S. urology residents completed the survey (response rate 13%). All American Urological Association sections were represented, including Northeastern (12.8%), New England (8.1%), New York (6.1%), Mid-Atlantic (3.4%), Southeastern (19.6%), North Central (29.05%), South Central (10.1%) and Western (10.8%). By procedure, 72.3% of respondents prescribe opioids after ureteroscopy, 37.8% after shockwave lithotripsy, 93.9% after percutaneous nephrolithotomy, and 53.4% after transurethral prostate procedures. By procedure, the average number of tablets prescribed, were 7.5 (range 0-30) for ureteroscopy, 4.2 (0-20) for shockwave lithotripsy, 14.1 (0-40) for percutaneous nephrolithotomy and 6.7 (0-30) for transurethral prostate procedures. The average number of tablets prescribed by region varied significantly for ureteroscopy, percutaneous nephrolithotomy and transurethral prostate procedures (all p <0.0001), but did not vary significantly for shockwave lithotripsy (p=0.067). CONCLUSIONS: Opioid prescribing practices among U.S. urology residents for common urological procedures varied by regional American Urological Association section, and attitudes surrounding opioid dispensing influenced prescription patterns. While attitudes regarding opioid prescriptions after urological surgery are improving, residents may benefit from additional training, best practice policies and/or society guidelines.

7.
Int J Impot Res ; 33(2): 184-190, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32683416

RESUMEN

Testicular torsion is a known cause of morbidity in pediatric patients, but the burden in the adult population is poorly understood. We sought to determine the incidence of testicular torsion and risk factors for orchiectomy in a population encompassing all ages. A cohort analysis of 1625 males undergoing surgery for torsion was performed using the 2011 and 2012 Healthcare Cost and Utilization Project Nationwide Emergency Departments Sample. Patient and hospital factors were examined for association with orchiectomy vs. testicular salvage. The estimated yearly incidence of testicular torsion was 5.9 per 100,000 males ages 1-17 years and 1.3 per 100,000 males ≥18 years. Among those undergoing surgical intervention, orchiectomy was performed in 33.6%. The risk of orchiectomy was highest in patients 1-11 years of age and patients over 50 years of age (46.0% and 69.7% of patients, respectively). Orchiectomy was also associated with public insurance (Medicaid/Medicare) or self-pay as primary payer. While testicular torsion is less common in the adult population, the rate of orchiectomy is high. Those with disadvantaged payer status are also at increased risk for testicular loss.


Asunto(s)
Torsión del Cordón Espermático , Adolescente , Adulto , Anciano , Niño , Preescolar , Humanos , Lactante , Masculino , Medicare , Orquiectomía , Estudios Retrospectivos , Factores de Riesgo , Torsión del Cordón Espermático/epidemiología , Torsión del Cordón Espermático/cirugía , Estados Unidos
8.
J Urol ; 183(1): 201-6, 2010 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-19913836

RESUMEN

PURPOSE: Little is known about the health related quality of life of women who have undergone continent urinary diversion. We compared health related quality of life outcomes for women who underwent radical cystectomy with an orthotopic neobladder or Indiana pouch. MATERIALS AND METHODS: From 1995 to June 2008 a single surgeon (GDS) performed radical cystectomy with an orthotopic neobladder in 47 women and radical cystectomy with an Indiana pouch in 45. A comprehensive database provided clinical, pathological and outcomes data. The validated Functional Assessment of Cancer Therapy-Vanderbilt Cystectomy Index was mailed to 92 patients. RESULTS: Complete data were available for 87% of patients treated with radical cystectomy with an orthotopic neobladder and 93% of those treated with radical cystectomy with an Indiana pouch, with a median followup of 34 and 24 months, respectively (p = 0.8). Median (IQR) age was 65 (58, 71) and 61.5 (51, 67) years for patients with an orthotopic neobladder and Indiana pouch, respectively (p = 0.03). No significant differences were found for pathological stage, nodal status, blood loss, Clavien grade III or greater complications, adjuvant therapy or hospital stay between the 2 treatment groups, or between respondents and nonrespondents. Five-year survival rates for patients with an orthotopic neobladder and Indiana pouch were 65% and 58%, respectively (p = 0.9). There were 21 (75%) living patients with an orthotopic neobladder and 19 (61%) with an Indiana pouch who completed the Functional Assessment of Cancer Therapy-Vanderbilt Cystectomy Index, and physical (p = 0.53), social (p = 0.97), emotional (p = 0.61), functional (p = 0.55) and radical cystectomy specific (p = 0.54) health related quality of life domains were not significantly different between the groups. CONCLUSIONS: Women undergoing radical cystectomy with an orthotopic neobladder vs an Indiana pouch have similar health related quality of life outcomes. Larger series with longer followup and multiple surgeons are necessary to confirm these findings.


Asunto(s)
Cistectomía , Calidad de Vida , Derivación Urinaria/métodos , Reservorios Urinarios Continentes , Anciano , Femenino , Humanos , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
9.
BJU Int ; 106(1): 91-4, 2010 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-19888971

RESUMEN

STUDY TYPE: Therapy (case series) Level of Evidence 4. OBJECTIVE: To investigate the outcomes of laparoscopic partial nephrectomy (LPN) for endophytic tumours and those located near the hilum or the posterior upper-pole, as these pose a technical challenge. PATIENTS AND METHODS: Technically challenging tumours were defined as endophytic, hilar, or at the posterior upper-pole (group 1), and were compared to tumours in other locations (group 2). We collected data prospectively for all patients undergoing LPN at our institution, including baseline patient and tumour characteristics, surgical and postoperative outcomes. Two-sided t-test or rank-sum test, and chi-square or exact tests were used as appropriate for comparison of continuous and categorical variables, respectively, with P < 0.05 considered to indicate statistical significance. RESULTS: There were 184 patients treated with LPN (42 in group 1 and 142 in group 2) between 2002 and 2008 by one surgeon (A.L.S.). Groups 1 and 2 were similar in terms of baseline variables (age, sex, body mass index, comorbidities, previous surgery, renal function and haematocrit) and in tumour size. LPN for challenging tumours resulted in a higher rate of collecting system repair (78% in group 1, 61% in group 2, P = 0.03). However, operative (surgery time, warm ischaemia time, blood loss, intraoperative complications) and postoperative outcomes (renal function, nadir haematocrit, complication rate, hospital stay and positive margin rate) were similar between the groups. CONCLUSIONS: With developing experience LPN can be safe for technically challenging renal tumours in well selected patients.


Asunto(s)
Neoplasias Renales/cirugía , Riñón/patología , Laparoscopía , Nefrectomía/métodos , Femenino , Humanos , Riñón/irrigación sanguínea , Riñón/cirugía , Neoplasias Renales/patología , Masculino , Persona de Mediana Edad , Nefrectomía/efectos adversos , Estudios Prospectivos , Resultado del Tratamiento
10.
World J Urol ; 27(4): 477-83, 2009 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-19363613

RESUMEN

Over the past century, retroperitoneal lymph node dissection (RPLND) for patients with non-seminomatous germ cell tumors has evolved to become an indispensable diagnostic and therapeutic procedure. Bilateral RPLND with inclusion of the suprahilar regions initially established therapeutic efficacy but was associated with significant ejaculatory morbidity. Decades later, multiple anatomic mapping studies demonstrated a predilection for low-volume retroperitoneal metastases to be ipsilateral and infrahilar, leading to the introduction and popularity of several modified templates. By minimizing contralateral dissection and avoiding essential neural pathways, coordinated antegrade ejaculation rates improved considerably. Simultaneously, prospective nerve-sparing techniques were developed to preserve sympathetic nerve function, allowed for modified or bilateral templates, and resulted in minimal ejaculatory morbidity. The primary oncologic concern with modified templates remains the potential for unresected 'extra-template' disease leading to retroperitoneal or systemic recurrences requiring additional therapy. While modified templates continue to be widely used, larger scale and longer-term studies are essential to fully elucidate their appropriate application and therapeutic efficacy.


Asunto(s)
Escisión del Ganglio Linfático/métodos , Neoplasias de Células Germinales y Embrionarias/cirugía , Neoplasias Testiculares/cirugía , Humanos , Escisión del Ganglio Linfático/efectos adversos , Masculino , Metástasis de la Neoplasia/prevención & control , Recurrencia Local de Neoplasia/prevención & control , Orquiectomía/métodos , Espacio Retroperitoneal
11.
Can J Urol ; 16(4): 4742-9; discussion 4749, 2009 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-19671227

RESUMEN

BACKGROUND: Several robot-assisted radical prostatectomy (RARP) series have reviewed the impact of the initial learning curve on perioperative outcomes. However, little is known about the impact of experience on urinary and sexual outcomes. Herein, we review the perioperative, pathological and functional outcomes of our initial 700 consecutive procedures with at least 1 year follow up. METHODS: From 2003-2006, 700 consecutive men underwent RARP at a single, academic institution. Perioperative data and pathologic outcomes were prospectively collected. Validated, UCLA-PCI-SF36v2 quality-of-life questionnaires were also obtained at 1, 3, 6 and 12 months following surgery. Outcomes between groups (cases 1-300, 301-500, and 501-700) were compared. RESULTS: Mean operative time (OT) and blood loss significantly decreased during the experience (286, 198, 190 min; p or=7 in 24%, 40%, 44%; p

Asunto(s)
Prostatectomía/métodos , Robótica , Disfunción Eréctil/prevención & control , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Resultado del Tratamiento , Incontinencia Urinaria/prevención & control
12.
J Urol ; 180(6): 2436-40, 2008 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-18930486

RESUMEN

PURPOSE: Patients with Gleason score 6 microfocal prostate cancer, defined as 5% or less in 1 biopsy core, are often considered to have favorable disease. Few studies have addressed clinical parameters that predict pathological upgrading or up staging at radical prostatectomy. MATERIALS AND METHODS: From a prospective database of 1,271 consecutive robot assisted laparoscopic prostatectomies performed from 2003 to 2008 patients with Gleason score 6 microfocal prostate cancer were identified. Adverse pathological outcome was defined as any upgrading and/or up staging on prostatectomy pathological findings. Multivariate logistic regression was used to evaluate the ability of patient age, clinical stage, the total number of biopsy cores, preoperative prostate specific antigen, prostate volume and pathological prostate specific antigen density to predict adverse pathological outcomes. RESULTS: A total of 192 patients with a median age of 59 years (range 42 to 73) were identified with Gleason score 6 prostate cancer involving 5% or less of 1 biopsy core, including 177 (92%) with clinical T1c disease. Mean +/- SD preoperative prostate specific antigen was 6.0 +/- 3.9 ng/ml (range 0.8 to 35). Overall 42 patients (22%) had adverse pathological outcomes, including upgrading in 35 (18%) and up staging in 16 (8%). Multivariate logistic regression revealed that age more than 65 years and pathological prostate specific antigen density greater than 0.20 ng/ml/gm were predictive of an increased risk of adverse pathological results (p = 0.0081 and 0.0169, respectively). CONCLUSIONS: While a microfocus of Gleason score 6 prostate cancer on biopsy is commonly considered low risk disease, there was a greater than 1/5 risk of pathological upgrading and/or up staging. Patients with Gleason score 6 microfocal prostate cancer should be counseled that they may harbor more aggressive disease, especially when pretreatment clinical risk factors are present, such as advanced age or high clinical prostate specific antigen density.


Asunto(s)
Neoplasias de la Próstata/patología , Adulto , Anciano , Biopsia con Aguja , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Valor Predictivo de las Pruebas , Prostatectomía , Neoplasias de la Próstata/cirugía , Resultado del Tratamiento
13.
J Endourol ; 22(3): 403-8, 2008 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-18355135

RESUMEN

Control of bleeding is one of the most technically challenging steps in laparoscopic renal surgery, especially partial nephrectomy. Although there is no consensus on how best to approach hemostasis, the options continue to expand. The original method of sutured renorrhaphy is, perhaps, the most effective; however, great skill is needed to avoid prolonged warm ischemia. Tissue sealants and adhesives serve as a barrier to leakage and as a hemostat. The four classes are fibrin sealants, collagen-based adhesives, hydrogel, and glutaraldehyde-based adhesive. Additionally, oxidized cellulose can be applied to the surface of kidney or used as a bolster. Fibrin sealants are self-activating and work best on a dry field. The gelatin matrix agent consists of human-derived thrombin with a calcium chloride solution and bovine-derived gelatin matrix. The fibrinogen required to form a clot comes from autologous blood. Another product is polyethylene glycol-based hydrogel, which acts as a mechanical sealant. The tissue glue consists of bovine serum albumin and glutaraldehyde, which cross-link to each other, as well as to other tissue proteins. Excessive use or spillage around the renal pelvis and ureter may compromise urinary flow. The methylcellulose products, consisting of oxidized cellulose sheets, usually are positioned within a sutured bolster and act in part by providing direct pressure. A number of energy-based technologies also have been utilized. Monopolar cautery consists of a high-frequency electrical current delivered from a single electrode. Care must be taken to avoid injurious current transfer to surrounding structures. With bipolar cautery, hemostasis occurs only between the electrodes. In the argonbeam coagulator, argon, an inert non-flammable gas that clears from the body rapidly, is coupled with an electrosurgical generator. The gas creates a more even distribution of the energy and better sealing of the tissues. There have been a few reports of serious complications, including gas embolism and tension pneumothorax. The holmium:YAG laser simultaneously dissects and coagulates tissue. However, its use may be limited by smoke and by blood splashing onto the camera lens, and the tissue vaporization and liquid could promote tumor-cell spillage. The potassium-titanyl-phosphate (KTP) and diode lasers have shown promise in animal studies. The saline-coupled radiofrequency tool uses a standard electrosurgical generator to deliver energy through the conductive fluid. The fluid keeps the surface temperature much lower, increases the contact area, and reduces char and eschar formation. One caveat for the use of instruments that coagulate and ablate tissue is that they can damage the collecting system. Furthermore, the char can make it difficult to assess margin status. In practice, a combination of instruments, sealants, or both generally is utilized to obtain hemostasis. These multimodality efforts may be especially useful in the patient with compromised renal function. On the other hand, the cost can rise quickly when multiple agents are employed. Combining suturing and hemostatic technology may be the best strategy.


Asunto(s)
Pérdida de Sangre Quirúrgica/prevención & control , Hemostasis Endoscópica/instrumentación , Hemostáticos/uso terapéutico , Riñón/cirugía , Procedimientos Quirúrgicos Urológicos/instrumentación , Humanos
14.
Nat Clin Pract Urol ; 5(9): 472-3, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18648331

RESUMEN

This Practice Point commentary discusses the study by Denzinger et al. in which patients with high-grade T1 (HGT1) bladder cancer were treated by transurethral resection with either white-light cystoscopy or fluorescence cystoscopy. Over a median follow-up duration >7 years, the recurrence-free survival was significantly improved in the fluorescence cystoscopy group. No difference was observed between the two groups, however, in the rate of progression to muscle-invasive disease, although the low number of progression events limited the power of this comparison. As such, a low threshold for radical cystectomy should be maintained in transurethrally resected HGT1 disease, regardless of the visualization technique used. Importantly, fluorescence cystoscopy represents a more costly and time-consuming procedure than does white-light cystoscopy. Larger clinical trials, as well as research at the molecular level, are needed to define the potential role of fluorescence cystoscopy in the treatment of HGT1 disease.

15.
Urol Clin North Am ; 34(2): 235-43; abstract x, 2007 May.
Artículo en Inglés | MEDLINE | ID: mdl-17484928

RESUMEN

The appropriate management of residual disease outside of the retroperitoneum after chemotherapy is a critical component of the comprehensive approach to treating advanced testicular germ cell tumors (GCTs). Although some data suggest that certain variables (eg, histology at retroperitoneal lymph node dissection) can accurately predict non-retroperitoneal histology, a multitude of studies demonstrate significant histologic discordance among different sites. In patients who have normalized serum tumor markers, therefore, we recommend resection of all sites of residual disease outside of the retroperitoneum. After excision of residual viable GCT, evidence suggests that at least intermediate-risk patients who have received only induction chemotherapy benefit from further systemic treatment.


Asunto(s)
Neoplasias de Cabeza y Cuello , Neoplasias Hepáticas , Neoplasias Pulmonares , Neoplasias del Mediastino , Neoplasias de Células Germinales y Embrionarias , Neoplasias Testiculares , Adulto , Neoplasias de Cabeza y Cuello/secundario , Neoplasias de Cabeza y Cuello/terapia , Humanos , Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/terapia , Neoplasias Pulmonares/secundario , Neoplasias Pulmonares/terapia , Masculino , Neoplasias del Mediastino/secundario , Neoplasias del Mediastino/terapia , Neoplasias de Células Germinales y Embrionarias/patología , Neoplasias de Células Germinales y Embrionarias/terapia , Neoplasias Testiculares/patología , Neoplasias Testiculares/terapia , Resultado del Tratamiento
16.
J Endourol ; 21(4): 374-7; discussion 377, 2007 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-17451325

RESUMEN

BACKGROUND AND PURPOSE: We report our office-based technique and results of BCG and interferon-alpha2B (BCG-IFN) for upper-tract transitional-cell carcinoma (TCC). TECHNIQUE: Papillary lesions were ablated endoscopically after biopsy. Office flexible cystoscopy was performed, and a 0.038-inch guidewire or Glidewire was advanced into the renal pelvis. A 5F ureteral catheter was placed over the wire, and a free flow of urine was confirmed. Half-strength BCG + 50 million units of IFN was infused under low pressure for 1 hour. The ureteral catheter was removed, and patients were instructed to void 1 hour later. RESULTS: Between 2000 and 2006, 10 patients with a median age of 72 years were treated with BCG-IFN for upper-tract TCC in 11 renal units. Follow-up ureteroscopy with or without biopsy was performed after a 6-week induction to evaluate response. Complete responders were placed on a maintenance regimen. With a median follow-up of 24 months, 8 patients (80%) demonstrated a complete response (CR) to therapy, and 2 had a partial response (decrease in tumor size, number, or both). Six patients with a CR have continued on maintenance therapy. There were no side effects or complications with the instillation therapy. CONCLUSION: We describe a safe, minimally invasive, and effective office-based technique for upper-tract BCG-IFN instillation.


Asunto(s)
Antineoplásicos/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Vacuna BCG/uso terapéutico , Carcinoma de Células Transicionales/tratamiento farmacológico , Interferón-alfa/uso terapéutico , Neoplasias Ureterales/tratamiento farmacológico , Anciano , Antineoplásicos/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Vacuna BCG/administración & dosificación , Cateterismo , Femenino , Humanos , Interferón alfa-2 , Interferón-alfa/administración & dosificación , Masculino , Proteínas Recombinantes
17.
Ann Thorac Surg ; 101(3): 1202-4, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26897213

RESUMEN

Urologic tumors invading the inferior vena cava can be a difficult management problem. They are traditionally dealt with utilizing hypothermic circulatory arrest through central cannulation for cardiopulmonary bypass performed through a median sternotomy in addition to the large abdominal incision for the kidney tumor. We describe a single incision approach utilizing normothermic cardiopulmonary bypass to address this technical challenge.


Asunto(s)
Carcinoma de Células Renales/cirugía , Puente Cardiopulmonar/métodos , Células Neoplásicas Circulantes/patología , Neoplasias Urológicas/cirugía , Vena Cava Inferior/cirugía , Cavidad Abdominal/cirugía , Carcinoma de Células Renales/patología , Femenino , Estudios de Seguimiento , Paro Cardíaco Inducido/métodos , Humanos , Masculino , Posicionamiento del Paciente/métodos , Cavidad Torácica/cirugía , Trombectomía/métodos , Resultado del Tratamiento , Neoplasias Urológicas/patología
18.
Urol Pract ; 8(2): 283, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37145649
19.
Urol Oncol ; 23(6): 431-9, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-16301123

RESUMEN

The appropriate treatment of residual disease outside the retroperitoneum after chemotherapy is a crucial component of the comprehensive approach to treating advanced testicular germ cell tumors (GCT). Residual nonretroperitoneal disease is most commonly found in the thorax but can also be identified in other sites, including the neck, liver, and brain. Although some data suggest that certain variables such as retroperitoneal lymph node dissection histology can accurately predict nonretroperitoneal histology, a multitude of studies show significant histologic discordance among different sites. Therefore, in patients with normalized serum tumor markers, we recommend resection of all sites of residual disease outside the retroperitoneum. Surgical approaches to the various lesions must minimize morbidity, and synchronous resections under the same anesthetic should be performed if technically feasible. After excision of residual viable GCT, evidence suggests that at least intermediate-risk patients who have received only induction chemotherapy will benefit from further systemic treatment. Patients with residual nonretroperitoneal viable GCT after salvage chemotherapy receive no benefit from additional systemic chemotherapy.


Asunto(s)
Neoplasias de Células Germinales y Embrionarias/tratamiento farmacológico , Neoplasias de Células Germinales y Embrionarias/cirugía , Humanos , Neoplasias de Células Germinales y Embrionarias/complicaciones , Neoplasias de Células Germinales y Embrionarias/patología , Tasa de Supervivencia , Factores de Tiempo , Resultado del Tratamiento
20.
Int. braz. j. urol ; 46(1): 108-115, Jan.-Feb. 2020. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1056353

RESUMEN

ABSTRACT Objective: Cystectomy with urinary diversion is the gold standard for muscle invasive bladder cancer. It also may be performed as part of pelvic exenteration for non-urologic malignancy, neurogenic bladder dysfunction, and chronic conditions that result in a non-functional bladder (e.g., interstitial cystitis, radiation cystitis). Our objective is to describe the surgical technique of urinary diversion using large intestine as a conduit whilst creating an end colostomy, thereby avoiding a primary bowel anastomosis and to show its applicability with respect to urologic conditions. Materials and Methods: We retrospectively reviewed five cases from a single institution that utilized the described method of urinary diversion with large intestine. We describe operative times, hospital length of stay (LOS), and describe post-operative complications. Results: Five patients with a variety of urologic and oncologic pathology underwent the described procedures. Their operative times ranged from 5 hours to 11 hours and one patient experienced a Clavien III complication. Conclusion: We describe five patients who underwent this procedure for various medical indications, and describe their outcomes, and believe dual diversion of urinary and gastrointestinal systems with colon as a urinary conduit to be an excellent surgical option for the appropriate surgical candidate.


Asunto(s)
Humanos , Masculino , Adulto , Colon Sigmoide/cirugía , Colostomía/métodos , Derivación Urinaria/métodos , Enfermedades de la Vejiga Urinaria/cirugía , Anastomosis Quirúrgica , Cistectomía/métodos , Reproducibilidad de los Resultados , Resultado del Tratamiento , Tempo Operativo , Tiempo de Internación , Ilustración Médica , Persona de Mediana Edad
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