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1.
Clin Transplant ; 35(9): e14403, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34184312

RESUMEN

Perioperative pain management is an important consideration in early recovery and patient satisfaction following laparoscopic donor nephrectomy. Transmuscular quadratus lumborum block has been described to reduce pain and opioid usage following several abdominal surgeries. In this prospective single-blind randomized controlled trial, we compared 52 patients who adhered to our institutional donor nephrectomy Early Recovery After Surgery pathway, which includes a laparoscopic-guided transversus abdominus plane block, to 40 patients who additionally received a transmuscular quadratus lumborum block with liposomal bupivacaine. Compared to control patients, those who received the block spent longer in the operating room prior to the surgical start (65.4 vs. 51.6 min, P < .001). Both groups had similar total hospital length of stay (33.3 h vs. 34.4 h, P = .61). Pain scores from postoperative days 0-30, number of patients requiring opioids, postoperative nausea, and pain management satisfaction were similar between both groups. Patients who received the block consumed less opioid on postoperative day 1 compared to controls (P = .006). No complications were attributable to the block. The quadratus lumborum block provides a safe pain management adjunct for some patients, and may reduce opioid use in the early postoperative period when combined with our standard institutional protocol for kidney donors.


Asunto(s)
Analgesia , Laparoscopía , Analgésicos Opioides/uso terapéutico , Anestésicos Locales , Bupivacaína , Humanos , Nefrectomía , Dolor Postoperatorio/tratamiento farmacológico , Dolor Postoperatorio/etiología , Dolor Postoperatorio/prevención & control , Estudios Prospectivos , Método Simple Ciego
2.
J Natl Compr Canc Netw ; 17(5): 432-440, 2019 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-31085756

RESUMEN

BACKGROUND: Pancreatic cancer is an aggressive disease characterized by early and relentless tumor spread, thus leading healthcare providers to consider it a "distant disease." However, local pancreatic tumor progression can lead to substantial morbidity. This study defines the long-term morbidity from local and nonlocal disease progression in a large population-based cohort. METHODS: A total of 21,500 Medicare beneficiaries diagnosed with pancreatic cancer in 2000 through 2011 were identified. Hospitalizations were attributed to complications of either local disease (eg, biliary disorder, upper gastrointestinal ulcer/bleed, pain, pancreas-related, radiation toxicity) or nonlocal/distant disease (eg, thromboembolic events, cytopenia, dehydration, nausea/vomiting/motility problem, malnutrition and cachexia, ascites, pathologic fracture, and chemotherapy-related toxicity). Competing risk analyses were used to identify predictors of hospitalization. RESULTS: Of the total cohort, 9,347 patients (43.5%) were hospitalized for a local complication and 13,101 patients (60.9%) for a nonlocal complication. After adjusting for the competing risk of death, the 12-month cumulative incidence of hospitalization from local complications was highest in patients with unresectable disease (53.1%), followed by resectable (39.5%) and metastatic disease (33.7%) at diagnosis. For nonlocal complications, the 12-month cumulative incidence was highest in patients with metastatic disease (57.0%), followed by unresectable (56.8%) and resectable disease (42.8%) at diagnosis. Multivariable analysis demonstrated several predictors of hospitalization for local and nonlocal complications, including age, race/ethnicity, location of residence, disease stage, tumor size, and diagnosis year. Radiation and chemotherapy had minimal impact on the risk of hospitalization. CONCLUSIONS: Despite the widely known predilection of nonlocal/distant disease spread in pancreatic cancer, local tumor progression also leads to substantial morbidity and frequent hospitalization.


Asunto(s)
Neoplasias Pancreáticas/epidemiología , Anciano , Anciano de 80 o más Años , Comorbilidad , Femenino , Hospitalización , Humanos , Incidencia , Masculino , Morbilidad , Neoplasias Pancreáticas/diagnóstico , Vigilancia de la Población , Estudios Retrospectivos , Programa de VERF , Carga Tumoral , Estados Unidos/epidemiología
3.
J Cardiothorac Vasc Anesth ; 33(5): 1187-1194, 2019 May.
Artículo en Inglés | MEDLINE | ID: mdl-30581107

RESUMEN

OBJECTIVES: The authors sought to investigate long-term outcomes after revascularization with and without use of cardiopulmonary bypass and hypothesized that off-pump would be comparable with on-pump. The primary outcome of interest was survival, and secondary outcomes were need for reintervention for revascularization or new diagnosis of myocardial infarction occurring any time after surgery during the 8- to 12-year follow-up period. DESIGN: Retrospective cohort analysis. SETTING: Veterans Affairs Medical Center. PARTICIPANTS: All patients undergoing primary isolated coronary bypass between January 1, 2004, and December 31, 2008 (n = 555). INTERVENTIONS: Coronary artery bypass on-pump (n = 238) or off-pump (n = 317). MEASUREMENTS AND MAIN RESULTS: Demographic and clinical variables were documented, including information on mortality, new myocardial infarction, and need for reintervention in the 8- to 12-year period after surgery. The on-pump and off-pump groups were similar regarding all demographic and clinical variables (p > 0.05), except for higher incidence of prior percutaneous coronary intervention in the off-pump group. There were more perioperative complications in the on-pump group (p = 0.007) and a greater number of grafts used (p = 0.000). Kaplan-Meier survival analysis demonstrated no significant difference (p > 0.05) in overall survival, reintervention-free survival, or postoperative myocardial infarction-free survival between patients who underwent bypass grafting on-pump or off-pump over extended follow-up averaging 10years. CONCLUSIONS: The present study's data did not show differences in key long-term outcomes between patients who underwent revascularization with or without cardiopulmonary bypass, supporting the idea that both methods achieve similar late results regarding overall survival, need for reintervention, and postoperative myocardial infarction.


Asunto(s)
Puente de Arteria Coronaria Off-Pump/tendencias , Hospitales de Veteranos/tendencias , Revascularización Miocárdica/tendencias , Vigilancia de la Población , Veteranos , Anciano , Estudios de Cohortes , Puente de Arteria Coronaria Off-Pump/métodos , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Revascularización Miocárdica/métodos , Vigilancia de la Población/métodos , Estudios Retrospectivos , Resultado del Tratamiento
4.
BJU Int ; 121(4): 565-574, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29032581

RESUMEN

OBJECTIVE: To describe the utilization and compare quality outcomes of partial nephrectomy (PN) for cT1a, cT1b and cT2a renal masses using a large national database. METHODS: We conducted a retrospective analysis of patients from the US National Cancer Database who underwent PN for cT1a/cT1b/T2a renal cell carcinoma between 2004 and 2013. We examined the use of PN over time and assessed quality indicators [positive surgical margin (PSM) and 30-day postoperative readmission rates]. Multivariable analysis was conducted to determine predictors for outcome comparisons. RESULTS: A total of 43 749 patients underwent PN for cT1a, cT1b and cT2a renal masses (cT1a, n = 34 796; cT1b, n = 8 040; cT2a, n = 913). The proportion of patients undergoing PN increased from 30.8% in 2004 to 56.7% in 2013 (P < 0.001), and this trend was apparent for all clinical stages. The PSM rate was 6.8%. Predictive factors for increased risk of PSMs included cT1a stage (P = 0.03), age [odds ratio (OR) 1.01; P < 0.001] and later year of diagnosis (OR: 1.05; P < 0.001). The 30-day readmission rate was 4.2%. Predictive factors for increased risk of readmission included cT1b (P < 0.001), high Charlson comorbidity score (OR: 1.32; P = 0.001) and lack of private insurance (OR: 1.21-1.97; P < 0.05); later year of diagnosis was associated with decreased odds of readmission (OR: 0.96; P < 0.001). Subset analysis of the 2010-2013 cohort showed increases in the proportion of minimally invasive PN for cT1a (52.8-69.6%; P < 0.001), cT1b (39.9-59.6%; P < 0.001) and cT2a tumours (33.3-47.3%; P = 0.01). The PSM rate was also increased, at 7.3%. Predictive factors for PSMs included increasing age (OR: 1.01; P < 0.001), minimally invasive surgical approach (OR: 1.52; P < 0.001), and conversion to open surgery (OR: 1.52; P = 0.01), but not clinical stage (P = 0.75-0.99). The 30-day readmission rate was 4.0%. Predictive factors for readmission included lack of private insurance (P < 0.001) and conversion to open surgery (OR: 1.63; P < 0.001). CONCLUSION: The use of PN has increased significantly over time for all clinical stage groups. PSM rates increased, while 30-day readmission rates decreased. The PSM rate increase was driven by increasing use of minimally invasive approaches, and not by higher clinical stage. The 30-day readmission rate was driven by patient comorbidities and socio-economic factors. Rising PSM rates represent a quality-of-care concern.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Nefrectomía , Carcinoma de Células Renales/epidemiología , Carcinoma de Células Renales/cirugía , Bases de Datos Factuales , Femenino , Humanos , Neoplasias Renales/epidemiología , Neoplasias Renales/cirugía , Masculino , Nefrectomía/efectos adversos , Nefrectomía/métodos , Nefrectomía/estadística & datos numéricos , Readmisión del Paciente/estadística & datos numéricos , Complicaciones Posoperatorias , Resultado del Tratamiento
5.
J Natl Compr Canc Netw ; 16(6): 711-717, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29891522

RESUMEN

Background: The high prevalence of distant metastatic disease among patients with pancreatic cancer often draws attention away from the local pancreatic tumor. This study aimed to define the complications and hospitalizations from local versus distant disease progression among a retrospective cohort of patients with pancreatic cancer. Methods: Records of 298 cases of pancreatic cancer treated at a single institution from 2004 through 2015 were retrospectively reviewed, and cancer-related symptoms and complications requiring hospitalization were recorded. Hospitalizations related to pancreatic cancer were attributed to either local or distant progression. Cumulative incidence analyses were used to estimate the incidence of hospitalization, and multivariable Fine-Gray regression models were used to identify factors predictive of hospitalizations. Results: The 1-year cumulative incidences of hospitalization due to local versus distant disease progression were 31% and 24%, respectively. Among 509 recorded hospitalizations, leading local etiologies included cholangitis (10%), biliary obstruction (7%), local procedure complication (7%), and gastrointestinal bleeding (7%). On multivariable analysis, significant predictors of hospitalization from local progression included unresectable disease (subdistribution hazard ratio [SDHR], 2.42; P<.01), black race (SDHR, 3.34; P<.01), younger age (SDHR, 1.02 per year; P=.01), tumor in the pancreatic head (SDHR, 2.19; P<.01), and larger tumor size (SDHR, 1.13 per centimeter; P=.02). Most patients who died in the hospital from pancreatic cancer (56%) were admitted for complications of local disease progression. Conclusions: Patients with pancreatic cancer experience significant complications of local tumor progression. Although distant metastatic progression represents a hallmark of pancreatic cancer, future research should also focus on improving local therapies.


Asunto(s)
Colangitis/epidemiología , Colestasis/epidemiología , Hemorragia Gastrointestinal/epidemiología , Neoplasias Pancreáticas/complicaciones , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Colangitis/etiología , Colangitis/terapia , Colestasis/etiología , Colestasis/terapia , Progresión de la Enfermedad , Femenino , Hemorragia Gastrointestinal/etiología , Hemorragia Gastrointestinal/terapia , Hospitalización/estadística & datos numéricos , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Neoplasias Pancreáticas/patología , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven
6.
J Natl Compr Canc Netw ; 15(5): 595-600, 2017 05.
Artículo en Inglés | MEDLINE | ID: mdl-28476739

RESUMEN

Background: Patient-controlled analgesia (PCA) is an effective approach to treat pain. However, data regarding patterns of PCA use for cancer pain are limited. The purpose of this study was to define the patterns of PCA use and related outcomes in hospitalized patients with cancer. Methods: We identified 90 patients with cancer admitted to a single academic center who received PCA for nonsurgical, cancer-related pain and survived to discharge between January 2013 and January 2014. Data collected included patient demographics, cancer diagnosis, type of cancer-related pain, PCA use, opioid-specific adverse events, and 30-day readmission rates for pain. Univariable and multivariable linear regression models were used to analyze the association between patient and clinical variables with PCA duration. Logistic regression models were used to evaluate the relationship between patient and clinical variables and 30-day readmission rates. Results: The median length of hospitalization was 10.2 days with a median PCA duration of 4.4 days. Hematologic malignancies were associated with longer PCA use (P=.0001), as was younger age (P=.032). A trend was seen toward decreased 30-day readmission rates with longer PCA use (P=.054). No correlation was found between 30-day readmission and any covariate studied, including age, sex, cancer type (solid vs hematologic), pain type, palliative care consult, or time from PCA discontinuation to discharge. Conclusions: This study suggests that there is longer PCA use in younger patients and those with hematologic malignancies admitted with cancer-related pain, with a trend toward decreased 30-day readmission rates in those with longer PCA use.


Asunto(s)
Analgesia Controlada por el Paciente/métodos , Dolor en Cáncer/tratamiento farmacológico , Adulto , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Factores de Riesgo , Resultado del Tratamiento
7.
J Transl Med ; 14(1): 339, 2016 12 14.
Artículo en Inglés | MEDLINE | ID: mdl-27974047

RESUMEN

BACKGROUND: About 10-15% of adult, and most pediatric, gastrointestinal stromal tumors (GIST) lack mutations in KIT, PDGFRA, SDHx, or RAS pathway components (KRAS, BRAF, NF1). The identification of additional mutated genes in this rare subset of tumors can have important clinical benefit to identify altered biological pathways and select targeted therapies. METHODS: We performed comprehensive genomic profiling (CGP) for coding regions in more than 300 cancer-related genes of 186 GISTs to assess for their somatic alterations. RESULTS: We identified 24 GIST lacking alterations in the canonical KIT/PDGFRA/RAS pathways, including 12 without SDHx alterations. These 24 patients were mostly adults (96%). The tumors had a 46% rate of nodal metastases. These 24 GIST were more commonly mutated at 7 genes: ARID1B, ATR, FGFR1, LTK, SUFU, PARK2 and ZNF217. Two tumors harbored FGFR1 gene fusions (FGFR1-HOOK3, FGFR1-TACC1) and one harbored an ETV6-NTRK3 fusion that responded to TRK inhibition. In an independent sample set, we identified 5 GIST cases lacking alterations in the KIT/PDGFRA/SDHx/RAS pathways, including two additional cases with FGFR1-TACC1 and ETV6-NTRK3 fusions. CONCLUSIONS: Using patient demographics, tumor characteristics, and CGP, we show that GIST lacking alterations in canonical genes occur in younger patients, frequently metastasize to lymph nodes, and most contain deleterious genomic alterations, including gene fusions involving FGFR1 and NTRK3. If confirmed in larger series, routine testing for these translocations may be indicated for this subset of GIST. Moreover, these findings can be used to guide personalized treatments for patients with GIST. Trial registration NCT 02576431. Registered October 12, 2015.


Asunto(s)
Tumores del Estroma Gastrointestinal/metabolismo , Mutación/genética , Receptor Tipo 1 de Factor de Crecimiento de Fibroblastos/metabolismo , Receptor trkC/metabolismo , Adulto , Demografía , Femenino , Tumores del Estroma Gastrointestinal/genética , Genoma Humano , Humanos , Masculino , Proteínas de Fusión Oncogénica/metabolismo
9.
Curr Urol ; 18(2): 133-138, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-39176295

RESUMEN

Purpose: To evaluate the preliminary validity and acceptability of a low-cost low-fidelity robotic surgery dry lab for training and assessing residents' technical proficiency with key robotic radical prostatectomy steps. Materials and methods: Three standardized inanimate tasks were created to simulate the radical prostatectomy steps of posterior dissection, neurovascular bundle release, and urethrovesical anastomosis. Urology trainees and faculty at a single institution completed and evaluated each dry lab task. Construct validity was evaluated by comparing task completion times and Global Evaluative Assessment of Robotic Skills scores across four participant cohorts: medical students (n = 5), junior residents (n = 5), senior residents (n = 5), and attending surgeons (n = 7). Content validity, face validity, and acceptability were evaluated through a posttask survey using a 5-point Likert scale. Results: There was a significant difference in the individual and composite task completion times and Global Evaluative Assessment of Robotic Skills scores across all participant cohorts (all p < 0.01). The model was rated favorably in terms of its content validity and acceptability for use in residency training. However, model realism, compared with human tissue, was poorly rated. The dry lab production cost was less than US $25. Conclusions: This low-cost procedure-specific dry lab demonstrated evidence of content validity, construct validity, and acceptability for simulating key robotic prostatectomy technical steps and can be used to augment robot-assisted laparoscopic prostatectomy surgical training.

10.
Urol Pract ; 11(3): 529-536, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38451199

RESUMEN

INTRODUCTION: The AUA convened a 2021-2022 Quality Improvement Summit to bring together interdisciplinary providers to inform the current state and to discuss potential strategies for integrating primary palliative care into urology practice. We hypothesized that the Summit findings would inform a scalable primary palliative care model for urology. METHODS: The 3-part summit reached a total of 160 interdisciplinary health care professionals. Webinar 1, "Building a Primary Palliative Care Model for Urology," focused on a urologist's role in palliative care. Webinar 2, "Perspectives on Increasing the Use of Palliative Care in Advanced Urologic Disease," addressed barriers to possible implementation of a primary palliative care model. The in-person Summit, "Laying the Foundation for Primary Palliative Care in Urology," focused on operationalization of primary palliative care, clinical innovations needed, and relevant metrics. RESULTS: Participants agreed that palliative care is needed early in the disease course for patients with advanced disease, including those with benign and malignant conditions. The group agreed about the important domains that should be addressed as well as the interdisciplinary providers who are best suited to address each domain. There was consensus that a primary "quarterback" was needed, encapsulated in a conceptual model-UroPal-with a urologist at the hub of care. CONCLUSIONS: The Summit provides the field of urology with a framework and specific steps that can be taken to move urology-palliative care integration forward. Urologists are uniquely positioned to provide primary palliative care for their many patients with serious illness, both in the surgical and chronic care contexts.


Asunto(s)
Enfermería de Cuidados Paliativos al Final de la Vida , Enfermedades Urológicas , Urología , Humanos , Cuidados Paliativos , Mejoramiento de la Calidad
11.
Urology ; 173: 134-141, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36574911

RESUMEN

OBJECTIVE: To describe the risk of multiple recurrences in intermediate-risk non-muscle invasive bladder cancer (IR-NMIBC) and their impact on progression. Prognostic studies of IR-NMIBC have focused on initial recurrences, yet little is known about subsequent recurrences and their impact on progression. MATERIALS AND METHODS: IR-NMIBC patients from the Be-Well Study, a prospective cohort study of NMIBC patients diagnosed from 2015 to 2019 at Kaiser Permanente Northern California, were identified. The frequency of first, second, and third intravesical recurrences of urothelial carcinoma were characterized using conditional Kaplan-Meier analyses and random-effects shared-frailty models. The association of multiple recurrences with progression was examined. RESULTS: In 291 patients with IR-NMIBC (median follow-up 38 months), the 5-year risk of initial recurrence was 54.4%. After initial recurrence (n = 137), 60.1% of patients had a second recurrence by 2 years. After second recurrence (n = 70), 51.5% of patients had a third recurrence by 3 years. In multivariable analysis, female sex (Hazard Ratio 1.51, P< .01), increasing tumor size (HR 1.14, P< .01) and number of prior recurrences (HR 1.24, P< .01) were associated with multiple recurrences; whereas maintenance BCG (HR 0.66, P = .03) was associated with reduced recurrences. The 5-year risk of progression varied significantly (P< .01) by number of recurrences: 9.5%, 21.9%, and 37.9% for patients with 1, 2, and 3+ recurrences, respectively. CONCLUSIONS: Multiple recurrences are common in IR-NMIBC and are associated with progression. Female sex, larger tumors, number of prior recurrences, and lack of maintenance BCG were associated with multiple recurrences. Multiple recurrences may prove useful as a clinical trial endpoint for IR-NMIBC.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias Vesicales sin Invasión Muscular , Neoplasias de la Vejiga Urinaria , Humanos , Femenino , Neoplasias de la Vejiga Urinaria/patología , Carcinoma de Células Transicionales/patología , Estudios Prospectivos , Vacuna BCG/uso terapéutico , Progresión de la Enfermedad , Adyuvantes Inmunológicos/uso terapéutico , Recurrencia Local de Neoplasia/epidemiología , Recurrencia Local de Neoplasia/patología , Invasividad Neoplásica , Administración Intravesical
12.
Urol Oncol ; 40(7): 345.e1-345.e7, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35351369

RESUMEN

BACKGROUND: To describe overall and categorical cost components in the management of patients with non-metastatic upper tract urothelial carcinoma (UTUC) according to treatment. METHODS: We identified 4,114 patients diagnosed with non-metastatic UTUC from 2004 to 2013 in the Survival Epidemiology and End Results-Medicare linked database. Patients were stratified into renal preservation (RP) vs. radical nephroureterectomy (NU) groups. Total Medicare costs within 1 year of diagnosis were compared for patients managed with RP vs. NU using inverse probability of treatment-weighted propensity score models. RESULTS: A total of 1,085 (26%) and 3,029 (74%) patients underwent RP and NU, respectively. Median costs were significantly lower for RP vs. NU at 90 days (median difference -$4,428, Hodges-Lehmann [H-L] 95% confidence interval [CI], -$7,236 to -$1,619) and 365 days (median difference -$7,430, H-L 95% CI, -$13,166 to -$1,695), respectively. Median costs according to categories of services were significantly less for RP vs. NU patients by hospitalization, office visits, emergency room/critical care, consultations, and anesthesia. The only category which was significantly higher for RP vs. NU was inpatient visits ($1,699 vs. $1,532; median difference $152; HL 95% CI, $19-$286). CONCLUSIONS: Median costs were significantly lower for RP vs. NU up to 1-year and by hospitalization, office visits, emergency room/critical care, consultations, and anesthesia costs. In appropriately selected patients, such as patients with low-risk disease, these findings suggest the utility of RP as a suitable high-value management option in UTUC.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias Ureterales , Neoplasias de la Vejiga Urinaria , Anciano , Carcinoma de Células Transicionales/patología , Humanos , Medicare , Nefroureterectomía , Estudios Retrospectivos , Resultado del Tratamiento , Estados Unidos , Neoplasias Ureterales/patología
13.
Mol Microbiol ; 77(1): 56-73, 2010 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-20497504

RESUMEN

Cell division in Gram-negative organisms requires coordinated invagination of the multilayered cell envelope such that each daughter receives an intact inner membrane, peptidoglycan (PG) layer and outer membrane (OM). Here, we identify DipM, a putative LytM endopeptidase in Caulobacter crescentus, and show that it plays a critical role in maintaining cell envelope architecture during growth and division. DipM localized to the division site in an FtsZ-dependent manner via its PG-binding LysM domains. Although not essential for viability, DeltadipM cells exhibited gross morphological defects, including cell widening and filamentation, indicating a role in cell shape maintenance and division that we show requires its LytM domain. Strikingly, cells lacking DipM also showed OM blebbing at the division site, at cell poles and along the cell body. Cryo electron tomography of sacculi isolated from cells depleted of DipM revealed marked thickening of the PG as compared to wild type, which we hypothesize leads to loss of trans-envelope contacts between components of the Tol-Pal complex. We conclude that DipM is required for normal envelope invagination during division and to maintain a sacculus of constant thickness that allows for maintenance of OM connections throughout the cell envelope.


Asunto(s)
Proteínas Bacterianas/metabolismo , Caulobacter crescentus/fisiología , Proteínas de Ciclo Celular/metabolismo , División Celular , Endopeptidasas/metabolismo , Peptidoglicano/metabolismo , Proteínas Bacterianas/genética , Caulobacter crescentus/citología , Caulobacter crescentus/metabolismo , Proteínas de Ciclo Celular/genética , Membrana Celular/ultraestructura , Pared Celular/ultraestructura , Microscopía por Crioelectrón , Tomografía con Microscopio Electrónico , Endopeptidasas/genética , Eliminación de Gen , Hidrólisis , Microscopía
14.
Urol Oncol ; 39(3): 194.e17-194.e24, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33012575

RESUMEN

BACKGROUND: High-risk ureteral tumors represent an understudied subset of upper tract urothelial carcinoma, whose surgical management can range from a radical nephroureterectomy (NU) to segmental ureterectomy (SU). OBJECTIVES: To evaluate contemporary trends in the management of high-risk ureteral tumors, the utilization of lymphadenectomy and peri-operative chemotherapy, and their impact on overall survival (OS). DESIGN, SETTING, AND PARTICIPANTS: We performed a retrospective cohort study of patients in the National Cancer Database from years 2006 to 2013 with clinically localized high-risk ureteral tumors treated with NU or SU. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Chi-squared tests were utilized to assess differences in clinicodemographic features and peri-operative treatment delivery between SU and NU cohorts. Cochran-Armitage tests and linear regressions were performed to evaluate temporal trends in treatment utilization. Multivariable logistic regression models were employed to assess predictors of treatment delivery. Multivariable Cox proportional hazards models evaluated associations with OS. RESULTS: Of the 1,962 patients included, NU was more commonly performed than SU (72.4%, 1,421/1,962 vs. 27.6%, 541/1,962). Only 22.7% (446/1,962) of the population underwent lymphadenectomy, and 24.8% (271/1,092) of those with advanced pathology (≥pT2 or pN+) received adjuvant chemotherapy. Lymphadenectomy was associated with improved OS in NU patients when more than 3 nodes were removed (hazard ratio [HR] 0.58, 95% confidence interval [CI] 0.39-0.89). Receipt of adjuvant chemotherapy for advanced pathology had no impact OS in both the NU (HR 1.10, 95% CI 0.84-1.44) and SU (HR 0.94, 95% CI 0.61-1.46) cohorts. Performance of SU was not associated with poorer OS on multivariable analysis (HR 1.02, 95% CI 0.89-1.21, P = 0.83). CONCLUSION: Our study suggests that SU may be an appropriate alternative to NU for the management of high-risk ureteral tumors. Further, lymphadenectomy may play an important role at the time of NU, and adjuvant chemotherapy is infrequently utilized in patients with advanced pathology.


Asunto(s)
Carcinoma de Células Transicionales/mortalidad , Carcinoma de Células Transicionales/terapia , Neoplasias Ureterales/mortalidad , Neoplasias Ureterales/terapia , Anciano , Anciano de 80 o más Años , Carcinoma de Células Transicionales/secundario , Quimioterapia Adyuvante , Estudios de Cohortes , Femenino , Hospitales , Humanos , Escisión del Ganglio Linfático , Metástasis Linfática , Masculino , Persona de Mediana Edad , Nefroureterectomía , Estudios Retrospectivos , Medición de Riesgo , Tasa de Supervivencia , Uréter/cirugía , Neoplasias Ureterales/patología
15.
Urology ; 157: 188-196, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34389428

RESUMEN

OBJECTIVE: To describe the incidence, clinical and demographic factors, and treatment patterns associated with discordant elevated alpha-fetoprotein (AFP) findings in patients with pure seminomatous histology. METHODS: We queried the National Cancer Database to identify patients with testicular germ cell tumors (GCT) diagnosed in 2011-2015. Patients were grouped based on histologic diagnosis and pre-operative serum AFP level. RESULTS: Of 18,616 patients diagnosed with testicular GCT, 53% (N = 9,849) had pure seminomatous histology, of whom 8.3% (N = 821) had an elevated serum AFP pre-operatively. Non-white patients with seminoma were more likely to have a pre-op elevated AFP (OR 1.42; 95% CI: 1.10-1.83); patients treated at higher volume centers were less likely to have a pre-op elevated AFP (0.66, 95% CI: 0.53-0.83). Patients with seminoma with elevated AFP received adjuvant radiation more frequently than those with NSGCT (Stage I: 15% vs 0.2%, P <.01; Stage II: 21.9% vs 0.1%, P <.01) and less frequently underwent retroperitoneal lymph node dissection (RPLND) (Stage 1: 1.9% vs 11.1% P <.01; Stage II: 8.8% vs 17.4%, P <.01). CONCLUSION: The detection of elevated serum alpha-fetoprotein (AFP) in patients with pure seminomatous testicular germ cell tumors (GCT) is a discordant finding that implies the presence of occult non-seminomatous GCT (NSGCT) elements. 8% of patients with pure seminomatous GCTs had diagnostically discordant elevated pre-operative AFP levels. Despite recommendations to manage these patients as NSGCT, patients with seminoma and elevated AFP were managed in a fashion comparable to those with seminoma and normal AFP levels.


Asunto(s)
Seminoma/sangre , Seminoma/patología , Neoplasias Testiculares/sangre , Neoplasias Testiculares/patología , alfa-Fetoproteínas/metabolismo , Adulto , Quimioterapia Adyuvante/estadística & datos numéricos , Bases de Datos Factuales , Hospitales de Alto Volumen , Humanos , Escisión del Ganglio Linfático/estadística & datos numéricos , Masculino , Estadificación de Neoplasias , Orquiectomía/estadística & datos numéricos , Periodo Preoperatorio , Modelos de Riesgos Proporcionales , Factores Raciales , Radioterapia Adyuvante/estadística & datos numéricos , Estudios Retrospectivos , Seminoma/terapia , Tasa de Supervivencia , Neoplasias Testiculares/terapia , Estados Unidos
16.
JNCI Cancer Spectr ; 5(6)2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34805743

RESUMEN

Background: Upper tract urothelial carcinoma (UTUC) is a heterogeneous disease that presents a clinical management challenge for the urologic surgeon. We assessed treatment patterns, costs, and survival outcomes among patients with nonmetastatic UTUC. Methods: We identified 4114 patients diagnosed with nonmetastatic UTUC from 2004 to 2013 in the Survival Epidemiology, and End Results-Medicare population-based database. Patients were stratified into low- or high-risk disease groups. Median total costs from 30 days prior to diagnosis through 365 days after diagnosis were compared between groups. Overall and cancer-specific survival were evaluated using Cox proportional hazards regression. All statistical tests were 2-sided. Results: After risk stratification, 1027 (24.9%) and 3087 (75.0%) patients were classified into low- vs high-risk UTUC groups. Most patients underwent at least 1 surgical intervention (95.1%); 68.4% underwent at least 1 endoscopic intervention. Patients diagnosed with high- vs low-risk UTUC were more likely to undergo nephroureterectomy (83.6% vs 72.0%; P < .001); few patients with low-risk disease were exclusively managed endoscopically (16.9%). At 365 days after diagnosis, costs of care for high- vs low-risk UTUC were statistically significantly higher ($108 520 vs $91 233; median difference $16 704, 95% confidence interval [CI] = $11 619 to $21 778; P < .001). Those with high-risk UTUC had worse cancer-specific and overall survival compared with patients with low-risk UTUC (cancer-specific survival hazard ratio [HR] = 4.14, 95% CI = 3.19 to 5.37; overall survival HR = 1.78, 95% CI = 1.62 to 1.96). Conclusions: UTUC continues to be managed primarily with nephroureterectomy, regardless of risk stratification, and patients with high-risk UTUC have worse overall and cancer-specific survival. Substantial costs are associated with management of low- and high-risk UTUC, with the latter being more costly up to 1 year from diagnosis.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias Renales , Nefroureterectomía , Neoplasias Ureterales , Anciano , Anciano de 80 o más Años , Procedimientos Quirúrgicos Ambulatorios/economía , Carcinoma de Células Transicionales/economía , Carcinoma de Células Transicionales/mortalidad , Carcinoma de Células Transicionales/patología , Carcinoma de Células Transicionales/cirugía , Costos y Análisis de Costo , Femenino , Hospitalización/economía , Humanos , Neoplasias Renales/economía , Neoplasias Renales/mortalidad , Neoplasias Renales/patología , Neoplasias Renales/cirugía , Masculino , Medicare/economía , Nefroureterectomía/economía , Nefroureterectomía/métodos , Nefroureterectomía/estadística & datos numéricos , Tratamientos Conservadores del Órgano/economía , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Medición de Riesgo , Programa de VERF , Factores Sexuales , Resultado del Tratamiento , Estados Unidos , Neoplasias Ureterales/economía , Neoplasias Ureterales/mortalidad , Neoplasias Ureterales/patología , Neoplasias Ureterales/cirugía
17.
Urol Oncol ; 39(8): 496.e17-496.e24, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33640225

RESUMEN

OBJECTIVES: To investigate treatment patterns of partial cystectomy (PC), neoadjuvant chemotherapy (NAC), lymph node dissection (LND), and treatment delays, and the associations with overall survival (OS) among patients with muscle-invasive bladder cancer. PATIENTS AND METHODS: We identified patients with cT2-4cN0cM0 urothelial carcinoma of the bladder in the National Cancer Database who underwent PC from 2007 through 2015. We performed descriptive statistics and assessed temporal trends using the Cochrane-Armitage test. Our outcomes of interest were NAC, LND, and treatment delay defined as ≥8 or ≥12 weeks for patients who underwent NAC or upfront surgery, respectively. We used logistic regression and multivariable Cox proportional hazards models to evaluate predictors and associations with OS, respectively. RESULTS: A total of 9,199 patients met inclusion criteria. Over the study period, PC utilization decreased from 9% to 7% (P = 0.06). Compared with patients who underwent radical cystectomy, patients treated with PC less frequently received NAC (7% vs. 17%, P < 0.01) and LND (57% vs. 91%, P < 0.01), but were less likely to experience treatment delays (25% vs. 31%, P < 0.01). Only 4.1% (27/655) of patients treated with PC received the combination of NAC, LND, and no treatment delay. In a Cox model, adequacy of LND was associated with improved OS (<10 nodes: HR 0.62, 95% CI 0.48-0.81 and ≥10 nodes: HR 0.48, 95% Cl 0.32-0.72). CONCLUSION: PC is uncommon and associated with poorer utilization of NAC and LND, but fewer treatment delays. The adequacy of LND was associated with improved OS while NAC and treatment delay were not.


Asunto(s)
Quimioterapia Adyuvante/mortalidad , Cistectomía/mortalidad , Escisión del Ganglio Linfático/mortalidad , Neoplasias de los Músculos/terapia , Terapia Neoadyuvante/mortalidad , Tiempo de Tratamiento/estadística & datos numéricos , Neoplasias de la Vejiga Urinaria/terapia , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Masculino , Neoplasias de los Músculos/patología , Invasividad Neoplásica , Pronóstico , Tasa de Supervivencia , Neoplasias de la Vejiga Urinaria/patología
18.
Asian J Androl ; 23(3): 236-239, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33243961

RESUMEN

Penile fracture (PF) is a surgical emergency. Given its rarity, we queried a national cohort over an 11-year period to study the temporal and demographic variations in presentation, evaluation, and management of patients with PF compared with a cohort of control patients. The National Inpatient Sample was queried between the years 2005 and 2016 for patients with a diagnosis of PF. Appendectomy patients were selected as a control cohort, given the non-discriminatory nature of this disease. Clinical and demographic data of the patients were compared with that of controls. Presenting symptoms, rates of surgical repair, and rates of associated surgical procedures were evaluated in the PF cohort. During the study period, 5802 patients were hospitalized for PF. The annual incidence of PF remained unchanged at 1.0-1.8 cases per 100 000 hospitalizations over the study period. Compared with the control cohort, PF patients were more likely to be younger (38.7 years vs 41.2 years, P ≤ 0.001), have lower rates of comorbidities except erectile dysfunction (1.4% vs 0.1%, P ≤ 0.001), and were more likely of Black race (25.4% vs 6.2%, P ≤ 0.001). Notably, PF patients had significantly higher rates of substance abuse (26.4% vs 18.1%, P ≤ 0.001), despite no difference in the diagnosed psychiatric disorders. PF rarely presented with hematuria (3.5%); however, urethral evaluation was performed in 23.1%, most commonly with cystoscopy (19.2%). PF occurs more commonly in a younger, healthier male population, and among minorities. Importantly, rates of substance abuse appear to be higher in the PF cohort compared with those of controls.


Asunto(s)
Pene/lesiones , Trastornos Relacionados con Sustancias/complicaciones , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Pene/fisiopatología , Estudios Retrospectivos , Factores de Riesgo , Trastornos Relacionados con Sustancias/epidemiología , Trastornos Relacionados con Sustancias/psicología , Estados Unidos
19.
Urology ; 143: 62-67, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32512110

RESUMEN

OBJECTIVE: To assess urology residency program modifications in the context of COVID-19, and perceptions of the impact on urology trainees. METHODS: A cross-sectional survey of program leadership and residents at accredited US urology residencies was administered between April 28, 2020 to March 11, 2020. Total cohort responses are reported, and subanalyses were preformed comparing responses between those in in high vs low COVID-19 geographic regions, and between program leaders vs residents. RESULTS: Program leaders from 43% of programs and residents from 18% of programs responded. Respondents reported decreased surgical volume (83%-100% varying by subspecialty), increased use of telehealth (99%), a transition to virtual educational platforms (95%) and decreased size of inpatient resident teams (90%). Most residents are participating in care of COVID-19 patients (83%) and 20% endorsed that urology residents have been re-deployed. Seventy nine percent of respondents perceive a negative impact of recent events on urology surgery training and anxiety regarding competency upon completion of residency training was more pronounced among respondents in high COVID-19 regions. CONCLUSION: Major modifications to urology training programs were implemented in response to COVID-19. Attention must be paid to the downstream effects of the training disruption on urology residents.


Asunto(s)
Betacoronavirus , Infecciones por Coronavirus/epidemiología , Internado y Residencia/organización & administración , Neumonía Viral/epidemiología , Enseñanza/organización & administración , Urología/educación , COVID-19 , Estudios Transversales , Humanos , Pandemias , SARS-CoV-2 , Estados Unidos/epidemiología
20.
Urology ; 169: 40, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36371102
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