RESUMEN
BACKGROUND AND PURPOSE: The effect of predominating Gleason grade (3+4 versus 4+3) in Gleason sum score (GS) 7 prostate cancer (PCa) on brachytherapy outcomes is unclear. The 10 year experience of permanent brachytherapy monotherapy at a single UK centre for GS 7, intermediate risk (Memorial Sloan-Kettering model), PSA < or = 10 ng/ml, localised PCa is reported. MATERIALS AND METHODS: Between 1995 and 2004, the outcomes of 187 patients with GS 7 PCa (PSA < or = 10 ng/ml) were analysed from a cohort of 1298 men treated with permanent Iodine-125 prostate brachytherapy, including PSA relapse-free survival (PSA-RFS). RESULTS: Median follow-up was 5.0 years (range 2.0-10.1 years). One patient has died of PCa. At 10 years, PSA-RFS was 82.4%/78% (ASTRO consensus and nadir +2 definitions). For GS 3+4, 5 year PSA-RFS was 86.7%/87.9% and for GS 4+3: 85.2%/96.6% respectively, with no significant difference between groups. Five year PSA-RFS (ASTRO) of 92.6% was seen for D(90) > or = 140 Gy (50% total), compared with 77.0% below 140 Gy (p=0.08). CONCLUSIONS: Iodine-125 brachytherapy monotherapy achieved good rates of medium term biochemical control in GS 7, intermediate risk localised PCa patients. There was a trend to improved outcomes in men with a D90 in excess of 140 Gy.
Asunto(s)
Braquiterapia/métodos , Radioisótopos de Yodo/uso terapéutico , Recurrencia Local de Neoplasia/mortalidad , Neoplasias de la Próstata/mortalidad , Neoplasias de la Próstata/radioterapia , Anciano , Biopsia con Aguja , Estudios de Cohortes , Supervivencia sin Enfermedad , Estudios de Seguimiento , Humanos , Inmunohistoquímica , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/patología , Estadificación de Neoplasias , Modelos de Riesgos Proporcionales , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/patología , Dosificación Radioterapéutica , Estudios Retrospectivos , Medición de Riesgo , Estadísticas no Paramétricas , Análisis de Supervivencia , Factores de Tiempo , Resultado del TratamientoRESUMEN
PURPOSE: We have previously reported on the mortality, morbidity, and 5-year survival of 458 patients who underwent radical radiotherapy or surgery for invasive bladder cancer in Yorkshire from 1993 to 1996. We aim to present the 10-year outcomes of these patients and to reassess factors predicting survival. METHODS AND MATERIALS: The Northern and Yorkshire Cancer Registry identified 458 patients whose cases were subjected to Kaplan-Meier all-cause survival analyses, and a retrospective casenote analysis was undertaken on 398 (87%) for univariate and multivariate Cox proportional hazards modeling. Additional proportional hazards regression modeling was used to assess the statistical significance of variables on overall survival. RESULTS: The ratio of radiotherapy to cystectomy was 3:1. There was no significant difference in overall 10-year survival between those who underwent radiotherapy (22%) and radical cystectomy (24%). Univariate analyses suggested that female sex, performance status, hydronephrosis and clinical T stage, were associated with an inferior outcome at 10 years. Patient age, tumor grade, treatment delay, and caseload factors were not significant. Multivariate analysis models were created for 0-2 and 2-10 years after treatment. There were no significant differences in treatment for 0-2 years; however, after 2 years follow-up there was some evidence of increased survival for patients receiving surgery compared with radiotherapy (hazard ratio 0.66, 95% confidence interval: 0.44-1.01, p = 0.06). CONCLUSIONS: a 10-year minimum follow-up has rarely been reported after radical treatment for invasive bladder cancer. At 10 years, there was no statistical difference in all-cause survival between surgery and radiotherapy treatment modalities.
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Cistectomía , Neoplasias de la Vejiga Urinaria/radioterapia , Neoplasias de la Vejiga Urinaria/cirugía , Anciano , Estudios de Cohortes , Cistectomía/métodos , Cistectomía/mortalidad , Femenino , Estudios de Seguimiento , Humanos , Hidronefrosis/complicaciones , Estado de Ejecución de Karnofsky , Masculino , Estadificación de Neoplasias , Modelos de Riesgos Proporcionales , Radioterapia/mortalidad , Estudios Retrospectivos , Factores Sexuales , Análisis de Supervivencia , Reino Unido , Neoplasias de la Vejiga Urinaria/mortalidad , Neoplasias de la Vejiga Urinaria/patologíaRESUMEN
OBJECTIVES: To assess the effect of adding lumen diathermy fulguration to our standard technique of vas ligation with polyglactin 910 (Vicryl(TM), Ethicon, Sommerville, NJ, USA) excision and fascial interposition, in an attempt to improve our sterilization rates. We previously reported the effect of changing suture material on vasectomy success rates; 3005 post-vasectomy semen analyses (PVSA) revealed a decrease in sterilization rates after surgery on changing from chromic catgut to polyglactin 910. PATIENTS AND METHODS: We retrospectively reviewed PVSA undertaken for vasectomies performed by urological surgeons at the Mid-Yorkshire NHS Trust for 18 months from September 2005 to February 2007. RESULTS: There were 592 vasectomies in all; the age distribution of patients between the groups treated with the standard and new method was similar. Overall, 166 patients (28%) failed to provide two semen samples as instructed, and so were excluded from further analyses. Sterility was achieved in 367 patients (86%); a further 28 (7%) have indeterminate analyses to date, with one of the last two PVSAs showing sperm, with the PVSA of 32 (7%) patients showing persisting sperm. For the eight surgeons reviewed the sterility rates were broadly similar. CONCLUSIONS: The introduction of diathermy fulguration of the lumen has not improved vasectomy sterilization rates, with up to 14% having sperm on PVSA.
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Electrocoagulación/métodos , Recuento de Espermatozoides/estadística & datos numéricos , Vasectomía/métodos , Adulto , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento , Vasectomía/estadística & datos numéricosRESUMEN
OBJECTIVES: Numerous surgical techniques have been proposed for preputial relief to avoid circumcision. We aimed to review the indications, techniques, and outcomes of Y-V preputioplasty for men with phimosis treated at our institution between 1995 and the present. METHODS: We retrospectively examined the case notes of 89 patients who underwent Y-V preputioplasty since 1995. Indication, technique, and immediate outcomes were recorded. We have subsequently attempted to contact these patients for the completion of a satisfaction questionnaire. RESULTS: All case notes were retrieved; 87 of 89 procedures were undertaken by a single surgeon (I.A.). The median age at operation was 29 years (range, 18-84 years) and median follow-up was 4 years. Seven patients required revision surgery (3: Y-V preputioplasties; 2: circumcisions; 1: adhesion division; and 1: frenuloplasty), whereas 2 patients reported unresolved symptoms but have not undergone additional procedures. Currently, we have successfully contacted 31 of 89 (35%) patients by telephone. These cases appear to have similar demographic features to the whole group. All agreed to complete a satisfaction questionnaire, and 30 replies were received. Overall, 12 patients (40%) were very satisfied and 10 (33%) were satisfied, whereas 4 (13%) were indifferent and 4 (13%) were dissatisfied. Two patients have subsequently undergone circumcision. Twenty-one (70%) patients described their cosmetic result as very good or good, and 22 (73%) patients would recommend the operation to a friend. Dissatisfaction with the procedure seemed to be associated with pre-existing erectile dysfunction, and not retracting the foreskin postoperatively. CONCLUSIONS: Y-V preputioplasty would seem a good alternative to circumcision for men with phimosis who wish to preserve their foreskin.
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Prepucio/cirugía , Fimosis/cirugía , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Procedimientos Quirúrgicos Urológicos Masculinos/métodosRESUMEN
Urinary biomarkers or profiles that allow noninvasive detection of recurrent transitional cell carcinoma (TCC) of the bladder are urgently needed. We obtained duplicate proteomic (SELDI) profiles from 227 subjects (118 TCC, 77 healthy controls and 32 controls with benign urological conditions) and used linear mixed effects models to identify peaks that are differentially expressed between TCC and controls and within TCC subgroups. A Random Forest classifier was trained on 130 profiles to develop an algorithm to predict the presence of TCC in a randomly selected initial test set (n = 54) and an independent validation set (n = 43) several months later. Twenty two peaks were differentially expressed between all TCC and controls (p < 10(-7)). However potential confounding effects of age, sex and analytical run were identified. In an age-matched sub-set, 23 peaks were differentially expressed between TCC and combined benign and healthy controls at the 0.005 significance level. Using the Random Forest classifier, TCC was predicted with 71.7% sensitivity and 62.5% specificity in the initial set and with 78.3% sensitivity and 65.0% specificity in the validation set after 6 months, compared with controls. Several peaks of importance were also identified in the linear mixed effects model. We conclude that SELDI profiling of urine samples can identify patients with TCC with comparable sensitivities and specificities to current tumor marker tests. This is the first time that reproducibility has been demonstrated on an independent test set analyzed several months later. Identification of the relevant peaks may facilitate multiplex marker assay development for detection of recurrent disease.
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Biomarcadores de Tumor/orina , Carcinoma de Células Transicionales/orina , Neoplasias de la Vejiga Urinaria/orina , Adulto , Anciano , Anciano de 80 o más Años , Resinas de Intercambio Aniónico , Cromatografía por Intercambio Iónico , Femenino , Hemoglobinuria/orina , Humanos , Masculino , Persona de Mediana Edad , alfa-Defensinas/orinaRESUMEN
Recent advances in proteomic profiling technologies, such as surface enhanced laser desorption ionization mass spectrometry, have allowed preliminary profiling and identification of tumor markers in biological fluids in several cancer types and establishment of clinically useful diagnostic computational models. There are currently no routinely used circulating tumor markers for renal cancer, which is often detected incidentally and is frequently advanced at the time of presentation with over half of patients having local or distant tumor spread. We have investigated the clinical utility of surface enhanced laser desorption ionization profiling of urine samples in conjunction with neural-network analysis to either detect renal cancer or to identify proteins of potential use as markers, using samples from a total of 218 individuals, and examined critical technical factors affecting the potential utility of this approach. Samples from patients before undergoing nephrectomy for clear cell renal cell carcinoma (RCC; n = 48), normal volunteers (n = 38), and outpatients attending with benign diseases of the urogenital tract (n = 20) were used to successfully train neural-network models based on either presence/absence of peaks or peak intensity values, resulting in sensitivity and specificity values of 98.3-100%. Using an initial "blind" group of samples from 12 patients with RCC, 11 healthy controls, and 9 patients with benign diseases to test the models, sensitivities and specificities of 81.8-83.3% were achieved. The robustness of the approach was subsequently evaluated with a group of 80 samples analyzed "blind" 10 months later, (36 patients with RCC, 31 healthy volunteers, and 13 patients with benign urological conditions). However, sensitivities and specificities declined markedly, ranging from 41.0% to 76.6%. Possible contributing factors including sample stability, changing laser performance, and chip variability were examined, which may be important for the long-term robustness of such approaches, and this study highlights the need for rigorous evaluation of such factors in future studies.
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Carcinoma de Células Renales/orina , Neoplasias Renales/orina , Proteínas de Neoplasias/orina , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores de Tumor/orina , Femenino , Humanos , Masculino , Espectrometría de Masas/métodos , Persona de Mediana Edad , Redes Neurales de la Computación , Análisis por Matrices de Proteínas , Proteómica/métodosRESUMEN
PURPOSE: The recent identification in transitional cell carcinoma of mutations in a fibroblast growth factor (FGF) receptor, namely FGF receptor-3, has provoked great interest in the potential usefulness of FGF receptors and their ligands as molecular markers and as targets for bladder cancer therapy. We examined these possibilities in light of the published literature. MATERIALS AND METHODS: We reviewed the world literature on FGFs and their receptors from 1966 to January 2002 using PubMed. RESULTS: The recent identification in transitional cell carcinoma of a high frequency of mutations in FGF receptor-3 predicted to activate kinase activity of the receptor indicate a likely role as an oncogene in the urothelium. The finding of FGF receptor-3 mutations only rarely in other tumor types to date indicates surprising urothelial specificity that requires tissue specific approaches for evaluation and exploitation. In contrast, FGF receptor-2 expression is down-regulated in bladder tumors, suggesting a possible tumor suppressor role. Information is available on the expression of FGF receptors-1 and 2 in normal bladder and urine, and in bladder tumors. These angiogenic factors represent potential urine markers of bladder neoplasia, although as single markers they lack sufficient sensitivity and specificity. Some interesting insights into the potential role of these factors have come from studies using in vitro model systems. However, there is little information on the numerous other members of this family of growth factors in the bladder and, therefore, much scope for future studies. CONCLUSIONS: It is clear that the FGFs and their receptors have important roles in the development of transitional cell carcinoma. Undoubtedly it will be a focus for much future research. It can be anticipated that members of these protein families would represent useful clinical markers and potential targets for bladder cancer therapy.