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2.
J Surg Educ ; 81(11): 1735-1742, 2024 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-39303661

RESUMEN

BACKGROUND: Step 1 has historically been a major criterion to evaluate students for residency match. With Step 1 now being pass/fail (P/F), students are uncertain how to distinguish their applications. We aim to understand student's opinions surrounding the scoring change as this is the first class of students applying to residency in the P/F era. MATERIALS AND METHODS: An electronic survey was sent to 3rd and 4th year American medical students. RESULTS: Of the 255 students surveyed, 61.6% prefer Step 1 in the P/F format. Students applying for highly competitive specialties (HCS) preferred numerical scoring (55.6%). On a 5-point Likert scale, students entering HCS believed more strongly that they would have a better chance at matching if Step 1 was graded numerically (3.47 vs 2.71) and creates an unfair advantage for those who can afford to pursue a research year (3.46 vs 2.95). Students entering HCS felt finances played a significant role in whether they took a research year and felt added pressure to engage in research. Respondents believe that students from prestigious medical schools, well-connected students, and MD students will benefit most. CONCLUSIONS: While students mostly prefer P/F scoring, there were differences of opinion between those going into HCS and LCS. Students indicated that those who have financial means are at a distinct advantage as they can afford to utilize a research year to distinguish their applications. Future efforts should be made to address student concerns and unintended consequences of the scoring change to create an equitable system.

3.
Urology ; 2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39233282

RESUMEN

OBJECTIVE: To evaluate whether earlier administration of adjuvant chemotherapy (AC) can significantly augment survival rates in muscle-invasive bladder cancer. METHODS: We systematically searched PubMed, Cochrane Central, Scopus, and Web of Science library databases for original articles that looked at timing to AC after radical cystectomy. Heterogeneity was assessed using Higgins I2%, with values over 50% considered heterogeneous and analyzed with a random effects model; otherwise, a fixed effects model was used. Studies were stratified based on the cutoff time used for administering AC. Two primary cutoffs were employed: 45 days and 90 days. Immediate AC was defined as chemotherapy administered before the predefined cutoff, while delayed AC was defined as chemotherapy administered after this cutoff. Comparisons were made between immediate versus delayed. RESULTS: A total of 5 studies were included. Overall survival (OS) was reported in all of the studies. The meta-analysis showed that immediate AC significantly improved OS, with a hazard ratio (HR) of 1.20 [1.06, 1.36], P=.004. When stratifying by the timing of therapy, starting chemotherapy within 45 days resulted in a greater improvement in survival (HR 1.27 [1.02, 1.59], P=.03) compared to starting within 90 days (HR 1.17 [1.00, 1.36], P=.04). CONCLUSION: The findings of this systematic review and meta-analysis emphasize that the timing of AC post-radical cystectomy significantly influences survival outcomes in patients with MIBC. The benefits of early AC initiation underscore its potential in mitigating disease progression and improving long-term survival rates.

4.
J Kidney Cancer VHL ; 11(3): 33-39, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39148862

RESUMEN

Although rare in adults, Wilms tumor is the most common pediatric renal tumor. Treatment typically involves radical nephrectomy followed by adjuvant chemotherapy or radiation, although outcomes differ between children and adults which may be due to challenges in accurately diagnosing these patients. In this article, we present a case report of an adult patient with Jeune syndrome and multiple urologic abnormalities who underwent radical nephrectomy for a large renal mass and was subsequently diagnosed with an epithelial predominant Wilms tumor. Epithelial predominant Wilms tumor may have distinct origins from other Wilms tumor histological subtypes and may incur better outcomes. Herein, we discuss the literature surrounding this rare entity as well as the anticipated treatment course.

5.
BJU Int ; 2024 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-39087422

RESUMEN

OBJECTIVE: To examine the impact of increased compliance to contemporary perioperative care measures, as outlined by enhanced recover after surgery (ERAS) guidelines, among patients undergoing radical cystectomy (RC). PATIENTS AND METHODS: From the National Surgical Quality Improvement Program database we captured patients undergoing RC between 2019 and 2021. We identified five perioperative care measures: regional anaesthesia block, thromboembolism prophylaxis, ≤24 h perioperative antibiotic administration, absence of bowel preparation, and early oral diet. We stratified patients by the number of measures utilised (one to five). Statistical endpoints included 30-day complications, hospital length of stay (LOS), readmissions, and optimal RC outcome. Optimal RC outcome was defined as absence of any postoperative complication, re-operation, prolonged LOS (75th percentile, 8 days) with no readmission. Multivariable regressions with Bonferroni correction were performed to assess the association between use of contemporary perioperative care measures and outcomes. RESULTS: Of the 3702 patients who underwent RC, 73 (2%), 417 (11%), 1010 (27%), 1454 (39%), and 748 (20%) received one, two, three, four, and five interventions, respectively. On multivariable analysis, increased perioperative care measures were associated with lower odds of any complication (odds ratio [OR] 0.66, 99% confidence interval [CI] 0.6-0.73), and shorter LOS (ß -0.82, 99% CI -0.99 to -0.65). Furthermore, patients with increased compliance to contemporary care measures had increased odds of an optimal outcome (OR 1.38, 99% CI 1.26-1.51). CONCLUSIONS: Among the measures we assessed, greater adherence yielded improved postoperative outcomes among patients undergoing RC. Our work supports the efficacy of ERAS protocols in reducing the morbidity associated with RC.

6.
Prostate ; 84(14): 1301-1308, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39021052

RESUMEN

BACKGROUND: Alterations in the PIK3/Akt/mTOR pathway are commonly seen in metastatic castration-sensitive prostate cancer (mCSPC), however their role in outcomes is unknown. We aim to evaluate the prognostic significance as well as the genetic landscape of PIK3/Akt/mTOR pathway alteration in mCSPC. METHODS: Fourhundred and seventy-two patients with mCSPC were included who underwent next generation sequencing. PIK3/Akt/mTor pathway alterations were defined as mutations in Akt1, mTOR, PIK3CA, PIK3CB, PIK3R1, PTEN, TSC1, and TSC2. Endpoints of interests were radiographic progression-free survival (rPFS), time to development of castration resistant prostate cancer (tdCRPC), and overall survival (OS). Kaplan-Meier analysis was performed and Cox regression hazard ratios (HR) were calculated. RESULTS: One hundred and fifty-two (31.9%) patients harbored a PIK3/Akt/mTOR pathway alteration. Median rPFS and tdCRPC were 23.7 and 21.0 months in PIK3/Akt/mTOR altered compared to 32.8 (p = 0.08) and 32.1 months (p = 0.002) in wildtype tumors. On multivariable analysis PIK3/Akt/mTOR pathway alterations were associated with tdCRPC (HR 1.43, 95% CI, 1.05-1.94, p = 0.02), but not rPFS [Hazard ratio (HR) 1.20, 95% confidence interval (CI), 0.90-1.60, p = 0.21]. PIK3/Akt/mTOR pathway alterations were more likely to be associated with concurrent mutations in TP53 (40% vs. 28%, p = 0.01) and TMPRSS2-ERG (37% vs. 26%, p = 0.02) than tumors without PIK3/Akt/mTOR pathway alterations. Concurrent mutations were typically associated with shorter median times to rPFS and tdCRPC. DAVID analysis showed p53 signaling and angiogenesis pathways were enriched in PIK3/Akt/mTOR pathway altered tumors while beta-catenin binding and altered BRCA pathway were enriched in PIK3/Akt/mTOR pathway wildtype tumors. CONCLUSIONS: PIK3/Akt/mTOR pathway alterations were common in mCSPC and associated with poorer prognosis. The genetic landscape of PIK3/Akt/mTOR pathway altered tumors differed from wildtype tumors. Additional studies are needed to better understand and target the PIK3/Akt/mTOR pathway in mCSPC.


Asunto(s)
Neoplasias de la Próstata Resistentes a la Castración , Proteínas Proto-Oncogénicas c-akt , Serina-Treonina Quinasas TOR , Humanos , Masculino , Serina-Treonina Quinasas TOR/metabolismo , Serina-Treonina Quinasas TOR/genética , Anciano , Proteínas Proto-Oncogénicas c-akt/genética , Proteínas Proto-Oncogénicas c-akt/metabolismo , Persona de Mediana Edad , Neoplasias de la Próstata Resistentes a la Castración/genética , Neoplasias de la Próstata Resistentes a la Castración/patología , Neoplasias de la Próstata Resistentes a la Castración/metabolismo , Transducción de Señal , Fosfatidilinositol 3-Quinasas/genética , Fosfatidilinositol 3-Quinasas/metabolismo , Mutación , Pronóstico , Metástasis de la Neoplasia , Anciano de 80 o más Años
7.
BJS Open ; 8(4)2024 Jul 02.
Artículo en Inglés | MEDLINE | ID: mdl-38987232

RESUMEN

BACKGROUND: Inguinal lymph node dissection plays an important role in the management of melanoma, penile and vulval cancer. Inguinal lymph node dissection is associated with various intraoperative and postoperative complications with significant heterogeneity in classification and reporting. This lack of standardization challenges efforts to study and report inguinal lymph node dissection outcomes. The aim of this study was to devise a system to standardize the classification and reporting of inguinal lymph node dissection perioperative complications by creating a worldwide collaborative, the complications and adverse events in lymphadenectomy of the inguinal area (CALI) group. METHODS: A modified 3-round Delphi consensus approach surveyed a worldwide group of experts in inguinal lymph node dissection for melanoma, penile and vulval cancer. The group of experts included general surgeons, urologists and oncologists (gynaecological and surgical). The survey assessed expert agreement on inguinal lymph node dissection perioperative complications. Panel interrater agreement and consistency were assessed as the overall percentage agreement and Cronbach's α. RESULTS: Forty-seven experienced consultants were enrolled: 26 (55.3%) urologists, 11 (23.4%) surgical oncologists, 6 (12.8%) general surgeons and 4 (8.5%) gynaecology oncologists. Based on their expertise, 31 (66%), 10 (21.3%) and 22 (46.8%) of the participants treat penile cancer, vulval cancer and melanoma using inguinal lymph node dissection respectively; 89.4% (42 of 47) agreed with the definitions and inclusion as part of the inguinal lymph node dissection intraoperative complication group, while 93.6% (44 of 47) agreed that postoperative complications should be subclassified into five macrocategories. Unanimous agreement (100%, 37 of 37) was achieved with the final standardized classification system for reporting inguinal lymph node dissection complications in melanoma, vulval cancer and penile cancer. CONCLUSION: The complications and adverse events in lymphadenectomy of the inguinal area classification system has been developed as a tool to standardize the assessment and reporting of complications during inguinal lymph node dissection for the treatment of melanoma, vulval and penile cancer.


Asunto(s)
Consenso , Técnica Delphi , Conducto Inguinal , Escisión del Ganglio Linfático , Melanoma , Neoplasias del Pene , Complicaciones Posoperatorias , Neoplasias de la Vulva , Humanos , Escisión del Ganglio Linfático/efectos adversos , Escisión del Ganglio Linfático/métodos , Femenino , Masculino , Neoplasias del Pene/cirugía , Neoplasias del Pene/patología , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/epidemiología , Neoplasias de la Vulva/cirugía , Neoplasias de la Vulva/patología , Melanoma/cirugía , Melanoma/patología , Conducto Inguinal/cirugía , Encuestas y Cuestionarios
8.
Artículo en Inglés | MEDLINE | ID: mdl-38846356

RESUMEN

Introduction & Objective: The role of the microbiome in the development and treatment of genitourinary malignancies is just starting to be appreciated. Accumulating evidence suggests that the microbiome can modulate immunotherapy through signaling in the highly dynamic tumor microenvironment. Nevertheless, much is still unknown about the immuno-oncology-microbiome axis, especially in urologic oncology. The objective of this review is to synthesize our current understanding of the microbiome's role in modulating and predicting immunotherapy response to genitourinary malignancies. Methods: A literature search for peer-reviewed publications about the microbiome and immunotherapy response in bladder, kidney, and prostate cancer was conducted. All research available in PubMed, Google Scholar, clinicaltrials.gov, and bioRxiv up to September 2023 was analyzed. Results: Significant differences in urinary microbiota composition have been found in patients with genitourinary cancers compared to healthy controls. Lactic acid-producing bacteria, such as Bifidobacterium and Lactobacillus genera, may have value in augmenting BCG responsiveness to bladder cancer. BCG may also be a dynamic regulator of PD-L1. Thus, the combination of BCG and immune checkpoint inhibitors may be an effective strategy for bladder cancer management. In advanced renal cell carcinoma, studies show that recent antibiotic administration negatively impacts survival outcomes in patients undergoing immunotherapy, while administration of CBM588, a live bacterial product, is associated with improved progression-free survival. Specific bacterial taxa, such as Streptococcus salivarius, have been linked with response to pembrolizumab in metastatic castrate-resistant prostate cancer. Fecal microbiota transplant has been shown to overcome resistance and reduce toxicity to immunotherapy; it is currently being investigated for both kidney and prostate cancers. Conclusions: Although the exact mechanism is unclear, several studies identify a symbiotic relationship between microbiota-centered interventions and immunotherapy efficacy. It is possible to improve immunotherapy responsiveness in genitourinary malignancies using the microbiome, but further research with more standardized methodology is warranted.

10.
Urology ; 189: 64-69, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38648953

RESUMEN

OBJECTIVES: To identify the impact of the duration of peri-operative antibiotics on infectious complications following radical cystectomy. METHODS: The National Surgical Quality Improvement Project (NSQIP) targeted database was queried for patients undergoing radical cystectomy from 2019 to 2021. Baseline patient characteristics were collected. Antibiotic duration was classified as <24 hours (short), 24-72 hours (intermediate) or >72 hours (long). Infectious complication data were collected including surgical site infection (SSI), urinary tract infection (UTI), organ space infection, pneumonia, sepsis, and clostridium difficile infection up to 30 days after surgery. Univariate and multivariable analyses were performed to compare duration of antibiotic therapy to infectious outcomes. RESULTS: Of the 4363 patients who underwent radical cystectomy, 3250 (74%), 827 (19%) and 286 (6.6%) received short, intermediate, and long duration of peri-operative antibiotics, respectively. Infectious complication occurred in 954 (22%) patients, including 227 (5.2%) SSI, 280 (6.4%) UTI, 268(6.1%) organ space infection, 87 (2%) pneumonia, and 378 (8.7%) sepsis. Clostridium difficile infection occurred in 89 (2%) patients. On multivariable analysis, there was no significant difference in overall infectious complication rates with long-duration antibiotics. However, intermediate duration of antibiotics in open surgery was associated with a decreased risk of SSI (OR 0.58; 95%CI 0.37-0.91) compared to those treated with short-term antibiotics. CONCLUSION: Despite guideline recommendations, 26% of patients in this database received >24 hours of peri-operative antibiotics without decreased risk of overall infectious complication. An intermediate course of antibiotics decreased risk of SSI in open surgery compared to the guideline recommend <24-hour course. Greater education regarding antibiotic stewardship and further studies investigating infectious complications are warranted.


Asunto(s)
Antibacterianos , Cistectomía , Bases de Datos Factuales , Infección de la Herida Quirúrgica , Humanos , Cistectomía/efectos adversos , Cistectomía/métodos , Masculino , Femenino , Anciano , Infección de la Herida Quirúrgica/epidemiología , Infección de la Herida Quirúrgica/etiología , Infección de la Herida Quirúrgica/prevención & control , Persona de Mediana Edad , Antibacterianos/uso terapéutico , Antibacterianos/administración & dosificación , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Factores de Tiempo , Profilaxis Antibiótica/métodos , Infecciones Urinarias/epidemiología , Infecciones Urinarias/etiología , Estudios Retrospectivos , Sepsis/etiología , Sepsis/epidemiología , Mejoramiento de la Calidad , Esquema de Medicación
11.
J Clin Med ; 13(5)2024 Feb 26.
Artículo en Inglés | MEDLINE | ID: mdl-38592152

RESUMEN

Renal cell carcinoma (RCC) is a common diagnosis, of which a notable portion of patients present with an extension into the venous circulation causing an inferior vena cava (IVC) tumor thrombus. Venous extension has significant implications for staging and subsequent treatment planning, with recommendations for more aggressive surgical removal, although associated surgical morbidity and mortality is relatively increased. The methods for surgical removal of RCC with IVC thrombus remain complex, particularly surrounding the use of robot-assisted surgery. Robot assistance for radical nephrectomy in this context is recently emerging. Thrombus level has important implications for surgical technique and prognosis. Other preoperative considerations may include location, laterality, size, and wall invasion. The urology literature on treatment of such tumors is largely limited to case series and institutional studies that describe the feasibility of various surgical options for these complex tumors. Further understanding of the outcomes and patient-specific risk factors would shed increased light on the optimal treatment for such cases. This narrative review provides a thorough overview on the previously reported use of robot-assisted nephrectomy in RCC with IVC thrombus to inform further studies which may optimize outcomes and guide shared decision-making.

12.
J Clin Med ; 13(7)2024 Apr 02.
Artículo en Inglés | MEDLINE | ID: mdl-38610824

RESUMEN

Bladder cancer (BC) is one of the most common malignancies in the United States, with over 80,000 new cases and 16,000 deaths each year. Urothelial carcinoma (UC) is the most common histology and accounts for 90% of cases. BC management is complicated by recurrence rates of over 50% in both muscle-invasive and non-muscle-invasive bladder cancer. As such, the American Urological Association (AUA) recommends that patients undergo close surveillance during and after treatment. This surveillance is in the form of cystoscopy or imaging tests, which can be invasive and costly tests. Considering this, there have been recent pushes to find complements to bladder cancer surveillance. Cell-free DNA (CfDNA), or DNA released from dying cells, and circulating tumor DNA (ctDNA), or mutated DNA released from tumor cells, can be analyzed to detect and characterize the molecular characteristics of tumors. Research has shown promising results for ctDNA use in the BC care realm. A PubMed literature review was performed finding studies discussing cfDNA and ctDNA in BC detection, prognostication, and monitoring for recurrence. Keywords used included bladder cancer, cell-free DNA, circulating tumor DNA, urothelial carcinoma, and liquid biopsy. Studies show that ctDNA can serve as prognostic indicators of both early- and late-stage BC, aid in risk stratification prior to major surgery, assist in detection of disease progression and metastatic relapse, and can assess patients who may respond to immunotherapy. The benefit of ctDNA is not confined to BC, as studies have also suggested its promise as a biomarker for neoadjuvant chemotherapy in upper-tract UC. However, there are some limitations to ctDNA that require improvements in ctDNA-specific detection methods and BC-specific mutations before widespread utilization can be achieved. Further prospective, randomized trials are needed to elucidate the true potential ctDNA has in advancements in BC care.

13.
Cureus ; 16(3): e55565, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38576641

RESUMEN

Renal cell carcinoma (RCC) tends to undergo intravascular tumor growth along the renal vein, forming tumor thrombi that may extend into the inferior vena cava (IVC) or even the right atrium (Level IV). Managing such cases requires a multidisciplinary approach, especially in patients with acute coronavirus disease 2019 (COVID-19) infection, who face increased risks from surgical interventions. We present a case of RCC with Level IV thrombus and concurrent COVID-19 managed with systemic therapy. We also summarize current literature on treating RCC with IVC thrombus and COVID-19's impact on prognosis. The patient was a 70-year-old female with incidental detection of a 9-cm right heterogeneous renal mass with a supradiaphragmatic tumor thrombus during COVID-19 infection. Due to ongoing pulmonary symptoms, systemic therapy with a combination of ipilimumab and nivolumab was initiated. After an excellent initial response, the patient continued systemic therapy, maintaining a necrotic response in the renal mass and tumor thrombus. The patient continues to tolerate systemic therapy well. We report a rare case of RCC with Level IV tumor thrombus and synchronous acute COVID-19 infection. Our report depicts successful management utilizing systemic therapy with a combination of ipilimumab and nivolumab. The management of such cases necessitates a comprehensive, multidisciplinary approach, considering the risks associated with surgery in the context of recent COVID-19 infection. The case presentation and ensuing literature discussion of the dynamic landscape of RCC management highlights the need for more research to improve treatment plans and guide clinicians in handling such complex situations.

15.
Urology ; 187: 25-30, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38342381

RESUMEN

OBJECTIVE: To determine how the use of United States Medical Licensing Examination (USMLE) score cutoffs during the screening process of the Urology Residency Match Program may affect recruitment of applicants who are underrepresented in medicine (URM). MATERIALS AND METHODS: Deidentified data from the Association of American Medical Colleges' (AAMC) Electronic Residency Application Service (ERAS) system was reviewed, representing all applicants to our institution's urology residency program from 2018 to 2022. We analyzed self-reported demographic variables including race/ethnicity, age, sex/gender, as well as USMLE Step 1 and Step 2 scores. Chi-square tests and ANOVA were used to determine the association between race/ethnicity and other sociodemographic factors and academic metrics. Applicants were stratified according to USMLE Step 1 cutoff scores and the distribution of applicants by race/ethnicity was assessed using a Gaussian nonlinear regression fit. RESULTS: A total of 1258 applicants submitted applications to our program during the 5-year period, including 872 males (69.3%) and 386 females (30.7%). Most applicants were White (43.5%), followed by Asian (28.3%), Hispanic/Latino (11.7%), and Black (7.0%). There was an association between race/ethnicity and USMLE scores. Median USMLE Step 1 scores for White, Asian, Hispanic/Latino, and Black applicants were 242, 242, 237, and 232, respectively (P < .001). As cutoff score increases, percentage of URM applicants decreases. CONCLUSION: The use of cutoffs based on USMLE scores disproportionately affects URM applicants. Transitioning from numeric scores to pass/fail may enhance holistic review processes and increase the representation of URM applicants offered interviews at urology residency programs.


Asunto(s)
Internado y Residencia , Urología , Humanos , Internado y Residencia/estadística & datos numéricos , Urología/educación , Estados Unidos , Masculino , Femenino , Adulto , Selección de Personal/estadística & datos numéricos , Selección de Personal/normas , Licencia Médica/estadística & datos numéricos , Grupos Minoritarios/estadística & datos numéricos
17.
Urol Oncol ; 42(1): 20.e17-20.e23, 2024 01.
Artículo en Inglés | MEDLINE | ID: mdl-37517898

RESUMEN

OBJECTIVE: UGN-101 has been approved for the chemoablation of low-grade upper tract urothelial cancer (UTUC) involving the renal pelvis and calyces. Herein is the first reported cohort of patients with ureteral tumors treated with UGN-101. PATIENTS AND METHODS: We performed a retrospective review of patients treated with UGN-101 for UTUC at 15 high-volume academic and community centers focusing on outcomes of patients treated for ureteral disease. Patients received UGN-101 with either adjuvant or chemo-ablative intent. Response rates are reported for patients receiving chemo-ablative intent. Adverse outcomes were characterized with a focus on the rate of ureteral stenosis. RESULTS: In a cohort of 132 patients and 136 renal units, 47 cases had tumor involvement of the ureter, with 12 cases of ureteral tumor only (8.8%) and 35 cases of ureteral plus renal pelvic tumors (25.7%). Of the 23 patients with ureteral involvement who received UGN-101 induction with chemo-ablative intent, the complete response was 47.8%, which did not differ significantly from outcomes in patients without ureteral involvement. Fourteen patients (37.8%) with ureteral tumors had significant ureteral stenosis at first post-treatment evaluation, however, when excluding those with pre-existing hydronephrosis or ureteral stenosis, only 5.4% of patients developed new clinically significant stenosis. CONCLUSIONS: UGN-101 appears to be safe and may have similar efficacy in treating low-grade urothelial carcinoma of the ureter as compared to renal pelvic tumors.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias Renales , Neoplasias Pélvicas , Uréter , Neoplasias Ureterales , Neoplasias de la Vejiga Urinaria , Humanos , Neoplasias Ureterales/cirugía , Carcinoma de Células Transicionales/tratamiento farmacológico , Carcinoma de Células Transicionales/patología , Neoplasias de la Vejiga Urinaria/patología , Constricción Patológica , Uréter/cirugía , Uréter/patología , Neoplasias Renales/patología , Mitomicinas , Estudios Retrospectivos
18.
Urol Oncol ; 42(1): 21.e9-21.e20, 2024 01.
Artículo en Inglés | MEDLINE | ID: mdl-37953186

RESUMEN

INTRODUCTION: Pelvic lymphadenectomy (PLND) alongside radical cystectomy (RC), provides crucial diagnostic and therapeutic value in patients with bladder cancer. With the advent of neoadjuvant chemotherapy and prospective data supporting standard PLND, controversy remains regarding the optimal PLND extent and patient selection. Nearly 40% of patients may not receive adequate PLND, even though 25% of patients have positive lymph nodes (LN) at time of RC. We hypothesized that PLND still remains an important facet of bladder cancer treatment. To clarify the prognostic importance of nodal yield, we performed a retrospective investigation of a heterogenous population (pTanyNx/0M0) of patients undergoing RC. METHODS: From the Surveillance, Epidemiology, and End Results (SEER) program, we identified pTanyNx/0M0 bladder cancer patients undergoing RC from 2004 to 2015. Kaplan Meier curves and Cox proportional hazards models assessed cancer-specific survival. Patients were analyzed with PLND performed as the primary covariate. Survival analysis then stratified patients undergoing PLND by LN yield, both as a continuous and categorial variable (≤10, 11-20, 21-30, and >30), and T stage. RESULTS: The final cohort included pTanyNx/0M0 patients with urothelial bladder cancer (n = 12,096); median follow up was 39 (IQR: 17-77) months. PLND was performed in 81.45% of patients with a median LN yield of 14 (IQR: 7-23). Most commonly, patients had T2 disease (44.68%). After controlling for age and T stage, patients receiving PLND had improved CSS (HR = 0.56, [95% CI: 0.51-0.62]) compared to those that did not receive PLND. When grouping patients by LN yield, survival improved in a "dose dependent" manner (>30 LN: HR = 0.76, [95% CI: 0.66-0.87]). We noted similar results when stratifying patients into non-muscle-invasive (NMIBC) and muscle-invasive bladder cancer (MIBC). CONCLUSIONS: In a large contemporary series of pTanyNx/0M0 bladder cancer patients, we found a significant oncologic benefit to PLND. Higher LN yield correlated to improved CSS in non-muscle-invasive and muscle-invasive disease. Our data support the possibility of occult micrometastasis even in non-muscle-invasive disease. Additionally, in light of recent advances in adjuvant immunotherapy, our results emphasize the importance of adequate nodal yield for accurate staging and optimal treatment.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias de la Vejiga Urinaria , Humanos , Estudios Retrospectivos , Estudios Prospectivos , Neoplasias de la Vejiga Urinaria/patología , Escisión del Ganglio Linfático/métodos , Carcinoma de Células Transicionales/patología , Cistectomía/métodos , Ganglios Linfáticos/cirugía , Ganglios Linfáticos/patología
19.
Commun Biol ; 6(1): 1292, 2023 12 21.
Artículo en Inglés | MEDLINE | ID: mdl-38129585

RESUMEN

Intra-tumor heterogeneity contributes to treatment failure and poor survival in urothelial bladder carcinoma (UBC). Analyzing transcriptome from a UBC cohort, we report that intra-tumor transcriptomic heterogeneity indicates co-existence of tumor cells in epithelial and mesenchymal-like transcriptional states and bi-directional transition between them occurs within and between tumor subclones. We model spontaneous and reversible transition between these partially heritable states in cell lines and characterize their population dynamics. SMAD3, KLF4 and PPARG emerge as key regulatory markers of the transcriptional dynamics. Nutrient limitation, as in the core of large tumors, and radiation treatment perturb the dynamics, initially selecting for a transiently resistant phenotype and then reconstituting heterogeneity and growth potential, driving adaptive evolution. Dominance of transcriptional states with low PPARG expression indicates an aggressive phenotype in UBC patients. We propose that phenotypic plasticity and dynamic, non-genetic intra-tumor heterogeneity modulate both the trajectory of disease progression and adaptive treatment response in UBC.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias de la Vejiga Urinaria , Humanos , Vejiga Urinaria , PPAR gamma , Neoplasias de la Vejiga Urinaria/terapia , Carcinoma de Células Transicionales/patología , Progresión de la Enfermedad
20.
Cancers (Basel) ; 15(14)2023 Jul 23.
Artículo en Inglés | MEDLINE | ID: mdl-37509395

RESUMEN

There are multiple treatment strategies for patients with localized prostate adenocarcinoma. In intermediate- and high-risk patients, external beam radiation therapy demonstrates effective long-term cancer control rates comparable to radical prostatectomy. In patients who opt for initial radiotherapy but have a local recurrence of their cancer, there is no unanimity on the optimal salvage approach. The lack of randomized trials comparing surgery to other local salvage therapy or observation makes it difficult to ascertain the ideal management. A narrative review of existing prospective and retrospective data related to salvage radical prostatectomy after radiation therapy was undertaken. Based on retrospective and prospective data, post-radiation salvage radical prostatectomy confers oncologic benefits, with overall survival ranging from 84 to 95% at 5 years and from 52 to 77% at 10 years. Functional morbidity after salvage prostatectomy remains high, with rates of post-surgical incontinence and erectile dysfunction ranging from 21 to 93% and 28 to 100%, respectively. Factors associated with poor outcomes after post-radiation salvage prostatectomy include preoperative PSA, the Gleason score, post-prostatectomy staging, and nodal involvement. Salvage radical prostatectomy represents an effective treatment option for patients with biochemical recurrence after radiotherapy, although careful patient selection is important to optimize oncologic and functional outcomes.

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