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1.
J Pers Assess ; 105(6): 733-742, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36722690

RESUMEN

The Five-Factor Machiavellianism Inventory (FFMI) was specifically designed to rectify validity concerns with traditional measures of Machiavellianism. In this study with 550 career targets and 1,127 knowledgeable informants at work from a broad range of occupations and organizations we tested whether the FFMI outperforms traditional measures of Machiavellianism in the prediction of agentic career success using a multifaceted range of proximal and distal career outcomes. Apparent sincerity is a social skill that enables individuals to instill trust and confidence while disguising other intentions. We tested whether apparent sincerity partially mediates the relation of the FFMI with career success. We controlled for gender, human capital, and kind of employment. The results show that the FFMI was a better predictor of agentic career success than traditional Machiavellianism scales. Apparent sincerity partially mediated the FFMI-career success relation. Agency directly and indirectly predicted career success. Planfulness indirectly predicted career success. Antagonism neither directly nor indirectly predicted career success. These results support that the FFMI covers with its dimensions the full range of trait Machiavellianism with reference to criterion validity.


Asunto(s)
Maquiavelismo , Ocupaciones , Humanos , Logro , Empleo , Habilidades Sociales
2.
J Pers Assess ; 103(6): 740-751, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33852374

RESUMEN

Previous research has found that traditional assessments of Machiavellianism have insufficient construct coverage and strongly overlap with psychopathy. Tackling these issues, Collison et al. developed the Five Factor Machiavellianism Inventory (FFMI), comprising antagonism, agency, and planfulness. Research by Kückelhaus et al. strongly supports the FFMI's construct validity. However, both of these previous studies share the limitation of common source bias. Therefore, in this study, target participants provided the FFMI self-assessments and coworkers assessed targets in terms of social competency, vocational environments, and occupational success. In a sample of 425 target-coworker dyads, we found that the traditional measures of MACH show a high degree of similarity with psychopathy, while the FFMI is discriminant from psychopathy and shows divergence from traditional measures of MACH with reference to coworker ratings of social competencies, vocational environments, and occupational success. Finally, we explored the interactive relations of the FFMI factors as emergent interpersonal syndromes. The number of significant interactions (18%) clearly exceeded a false positive rate of 5%. Implications and limitations are discussed.


Asunto(s)
Maquiavelismo , Narcisismo , Trastorno de Personalidad Antisocial/diagnóstico , Hostilidad , Humanos , Habilidades Sociales
3.
J Pers Assess ; 103(4): 509-522, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32633560

RESUMEN

Numerous scholars have criticized the traditional assessment of Machiavellianism due to insufficient construct coverage, some going so far as to question its distinctness from psychopathy. Tackling these issues, Collison, Vize, Miller, and Lynam developed the Five Factor Machiavellianism Inventory (FFMI), comprising antagonism, agency, and planfulness. We aimed to replicate the MACH-IV psychopathy relations, demonstrate the validity of the FFMI by assessing its relations with the NEO-PI-R and the HEXACO facets, and link the FFMI to a broad range of work-related criteria. We replicated the MACH-IV psychopathy relations and found a very high (rICCS = .91) absolute profile similarity between the FFMI's correlations with the NEO-PI-R in our sample (N = 572) and the correlation profile for the same variables reported by Collison and colleagues. Both the NEO-PI-R and HEXACO-PI-R profiles for the FFMI found in the current study supported its distinctiveness from traditional measures of Machiavellianism, which converged greatly with the correlation profiles for the FFMI-antagonism dimension. A cluster analysis also showed a substantial proportion of Five Factor Machiavellian individuals. In addition, the FFMI displayed positive relations with a broad range of criteria for vocational and work-related success and was clearly distinct from psychopathy.


Asunto(s)
Trastorno de Personalidad Antisocial/psicología , Relaciones Interpersonales , Maquiavelismo , Narcisismo , Encuestas y Cuestionarios/normas , Adulto , Humanos , Masculino , Psicometría , Reproducibilidad de los Resultados , Deseabilidad Social
4.
World J Urol ; 34(10): 1367-72, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26897499

RESUMEN

INTRODUCTION: The aim of the study was to identify the appropriate level of Charlson comorbidity index (CCI) in older patients (>70 years) with high-risk prostate cancer (PCa) to achieve survival benefit following radical prostatectomy (RP). METHODS: We retrospectively analyzed 1008 older patients (>70 years) who underwent RP with pelvic lymph node dissection for high-risk prostate cancer (preoperative prostate-specific antigen >20 ng/mL or clinical stage ≥T2c or Gleason ≥8) from 14 tertiary institutions between 1988 and 2014. The study population was further grouped into CCI < 2 and ≥2 for analysis. Survival rate for each group was estimated with Kaplan-Meier method and competitive risk Fine-Gray regression to estimate the best explanatory multivariable model. Area under the curve (AUC) and Akaike information criterion were used to identify ideal 'Cut off' for CCI. RESULTS: The clinical and cancer characteristics were similar between the two groups. Comparison of the survival analysis using the Kaplan-Meier curve between two groups for non-cancer death and survival estimations for 5 and 10 years shows significant worst outcomes for patients with CCI ≥ 2. In multivariate model to decide the appropriate CCI cut-off point, we found CCI 2 has better AUC and p value in log rank test. CONCLUSION: Older patients with fewer comorbidities harboring high-risk PCa appears to benefit from RP. Sicker patients are more likely to die due to non-prostate cancer-related causes and are less likely to benefit from RP.


Asunto(s)
Clasificación del Tumor/métodos , Prostatectomía/métodos , Neoplasias de la Próstata/cirugía , Medición de Riesgo , Anciano , Biopsia , Estudios de Seguimiento , Francia/epidemiología , Humanos , Masculino , Próstata/patología , Próstata/cirugía , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/mortalidad , Estudios Retrospectivos , Factores de Riesgo , Tasa de Supervivencia/tendencias , Factores de Tiempo
5.
World J Urol ; 32(2): 365-71, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23736527

RESUMEN

PURPOSE: Radical cystectomy (RC) and pelvic lymph node dissection (LND) are standard treatments for muscle-invasive urothelial carcinoma of the bladder. Lymph node staging is a prerequisite for clinical decision-making regarding adjuvant chemotherapy and follow-up regimens. Recently, the clinical and pathological nodal staging scores (cNSS and pNSS) were developed. Prior to RC, cNSS determines the minimum number of lymph nodes required to be dissected; pNSS quantifies the accuracy of negative nodal staging based on pT stage and dissected LNs. cNSS and pNSS have not been externally validated, and their relevance for prediction of cancer-specific mortality (CSM) has not been assessed. METHODS: In this retrospective study of 2,483 RC patients from eight German centers, we externally validated cNSS and pNSS and determined their prediction of CSM. All patients underwent RC and LND. Median follow-up was 44 months. cNSS and pNSS sensitivities were evaluated using the original beta-binominal models. Adjusted proportional hazards models were calculated for pN0 patients to assess the predictive value of cNSS and pNSS for CSM. RESULTS: cNSS and pNSS both pass external validation. Adjusted for other clinical parameters, cNSS can predict outcome after RC. pNSS has no independent impact on prediction of CSM. The retrospective design is the major limitation of the study. CONCLUSIONS: In the present external validation, we confirm the validity of both cNSS and pNSS. cNSS is an independent predictor of CSM, thus rendering it useful as a tool for planning the extent of LND.


Asunto(s)
Carcinoma de Células Transicionales/patología , Escisión del Ganglio Linfático/métodos , Ganglios Linfáticos/patología , Neoplasias de la Vejiga Urinaria/patología , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Transicionales/terapia , Quimioterapia Adyuvante , Estudios de Cohortes , Cistectomía , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Pelvis , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Resultado del Tratamiento , Neoplasias de la Vejiga Urinaria/terapia
6.
Br J Cancer ; 108(4): 973-82, 2013 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-23299537

RESUMEN

BACKGROUND: The B-cell translocation gene 2 (BTG2) is considered to act as a tumour-suppressor gene because of its antiproliferative and antimigratory activities. Higher levels of BTG2 expression in tumour cells have been linked to a better clinical outcome for several cancer entities. Here, we investigated the expression and function of BTG2 in bladder cancer. METHODS: The expression of BTG2 in bladder cancer cells was silenced by RNA interference. Cell motility was investigated by wound healing and Boyden chamber assays. The protein expression of BTG2 in bladder cancer was studied by immunohistochemistry. RESULTS: We observed that targeted suppression of BTG2 by RNA interference did not result in growth stimulation but led to a substantial inhibition of bladder cancer cell motility. Tissue microarray analyses of bladder cancer cystectomy specimens revealed that higher BTG2 expression levels within the tumours correlated strongly with a decreased cancer-specific survival for bladder cancer patients. CONCLUSION: These results indicate that endogenous BTG2 expression contributes to the migratory potential of bladder cancer cells. Moreover, high levels of BTG2 in bladder cancers are linked to decreased cancer-specific survival. These findings question the conception that BTG2 generally acts as a tumour suppressor and typically represents a favourable clinical marker for cancer patients.


Asunto(s)
Proteínas Inmediatas-Precoces/genética , Proteínas Supresoras de Tumor/genética , Neoplasias de la Vejiga Urinaria/genética , Anciano , Línea Celular Tumoral , Movimiento Celular/genética , Femenino , Genes Supresores de Tumor , Humanos , Proteínas Inmediatas-Precoces/metabolismo , Persona de Mediana Edad , Interferencia de ARN , Estudios Retrospectivos , Proteínas Supresoras de Tumor/metabolismo , Neoplasias de la Vejiga Urinaria/mortalidad
7.
Eur J Med Res ; 14(7): 320-2, 2009 Jul 22.
Artículo en Inglés | MEDLINE | ID: mdl-19661016

RESUMEN

INTRODUCTION: Rectal polypectomy causes thinning (or even perforation) of the rectal wall in addition to thermic injury at the polypectomy site. CASE REPORT: We present a rare case of spontaneous rectal perforation after uncomplicated nerve sparing endoscopic extraperitoneal radical prostatectomy in a patient with a previous history of rectal polypectomy at the perforation site. The patient could be treated conservatively. There was complete healing of the fistula without any effect on functional results. This Conservative therapy for such rectal perforations is indicated if the patient's general condition remains stable without any signs of infection. CONCLUSIONS: Polypectomy is an important risk factor for rectal perforation during nsEERPE. Adequate time interval should be given to allow healing and avoid adding further thermal wall damage which may obscure healing leading to complications like fistula. Conservative therapy for small missed rectal perforations constitutes an attractive, feasible and non invasive treatment entity. Following this principle we have not faced this complication in following similar cases.


Asunto(s)
Procedimientos Quirúrgicos del Sistema Digestivo/efectos adversos , Complicaciones Posoperatorias/terapia , Enfermedades del Recto/terapia , Anciano , Procedimientos Quirúrgicos del Sistema Digestivo/métodos , Endoscopía , Humanos , Masculino , Complicaciones Posoperatorias/etiología , Prostatectomía/efectos adversos , Prostatectomía/métodos , Neoplasias de la Próstata/patología , Neoplasias de la Próstata/cirugía , Enfermedades del Recto/etiología
8.
Eur J Med Res ; 13(6): 287-91, 2008 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-18558555

RESUMEN

INTRODUCTION: Among all imaging modalities, MRI of the prostate has the highest sensitivity to predict extracapsular tumor spread, seems to have added value for the preoperative treatment planning. It is an adjunct tool in patients with high suspicion of prostate cancer and so far negative TRUS-guided biopsies. Due to the higher intrinsic signal, it is expected that 3.0T enables to image the prostate without endorectal coil. Aim of this study was to evaluate the diagnostic accuracy of phased array coil 3.0T MRI in patients with suspicion of prostate cancer. MATERIAL AND METHODS: A high spatial resolution T2-w 3.0T pulse sequence (0.47 x 0.47 x 3mm voxel size) was performed in 26 patients prior to US-guided biopsy. Qualitative analysis comprised visual signal to noise, tissue contrasts and motion artifacts. MR diagnoses were correlated with histology. Diagnostic indices for the detection of prostate cancer in the peripheral zone were calculated. RESULTS: Histopathologic examination revealed pro?state cancer in 12 and benign prostate disorders in 14 patients. Motion artifacts due to peristalsis were rated moderate. Mean visual signal to noise was high. Contrast between peripheral and central zone of the prostate was excellent. MRI had 4 false negative and 2 false positive diagnoses (sensitivity 66.7 %, specificity 86.7 % diagnostic accuracy 76.9%). CONCLUSION: At 3.0T, diagnostic indices for cancer detection seem to be comparable to data reported about endorectal 1.5T MRI. Thus 3.0 T offers new options for MR imaging of the prostate in selected patients who cannot or are not willing to be examined with the endorectal coil.


Asunto(s)
Imagen por Resonancia Magnética/métodos , Próstata/patología , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/patología , Anciano , Biopsia , Reacciones Falso Positivas , Humanos , Procesamiento de Imagen Asistido por Computador , Espectroscopía de Resonancia Magnética/métodos , Masculino , Persona de Mediana Edad , Radiología/métodos
9.
Urologe A ; 47(11): 1472-80, 2008 Nov.
Artículo en Alemán | MEDLINE | ID: mdl-18818896

RESUMEN

BACKGROUND: The Rietveld method is one of the most innovative and most important applications in x-ray diffraction and has now, for the first time, been applied to standard-free precise quantitative crystallographic analysis of urinary stones. MATERIAL AND METHODS: The capability of the Rietveld method was demonstrated by analysis of a synthetic mixture of five typical urinary stones: whewellite, hydroxylapatite, brushite, struvite, and uric acid, with 20 weight % for each pure component. RESULTS: The quantitative phase analysis (Rietveld method) yielded a mean absolute error of only 1.6% for the weight fractions of the single urinary stone components. The largest error in weight fraction, 2.3%, occurred with hydroxylapatite, caused by the typical insufficient crystallinity. CONCLUSION: Crystallographic analysis of complex urinary stones with the aid of x-ray diffraction, in combination with a Rietveld structure refinement, is the method of first choice for qualitative and quantitative phase analysis. With this tool, significant changes in weight fractions for recurrent urinary stones can be precisely detected, with therapeutic consequences.


Asunto(s)
Cristalografía por Rayos X/métodos , Cálculos Urinarios/química , Oxalato de Calcio/análisis , Fosfatos de Calcio/análisis , Durapatita/análisis , Humanos , Compuestos de Magnesio/análisis , Fosfatos/análisis , Valor Predictivo de las Pruebas , Recurrencia , Factores de Riesgo , Estruvita , Ácido Úrico/análisis
10.
Urologe A ; 47(12): 1615-22, 2008 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-19030841

RESUMEN

Urethral strictures represent a relevant problem, particularly among urological patients, since they can also develop in conjunction with endourological instrumentation. After functional and radiological diagnostics, the choice of an individualized treatment concept is foremost while taking into consideration minimally invasive endourological procedures and techniques of surgical reconstruction. The best long-term results for this disorder, which has a considerable tendency to recur, are achieved with open reconstructive methods whereas urethrotomy pursues a curative approach only in cases of short-segment bulbar urethral strictures without spongiofibrosis.


Asunto(s)
Estrechez Uretral/cirugía , Anastomosis Quirúrgica , Endoscopía , Humanos , Masculino , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/cirugía , Recurrencia , Reoperación , Colgajos Quirúrgicos , Estrechez Uretral/diagnóstico por imagen , Estrechez Uretral/etiología , Urodinámica/fisiología , Urografía
11.
Urologe A ; 47(9): 1205-7, 2008 Sep.
Artículo en Alemán | MEDLINE | ID: mdl-18651120

RESUMEN

The exact classification of clinically significant versus insignificant prostate cancer displays one of major problems in current urological practice. Using novel molecular biomarkers, we are trying to decrease overdiagnosis of insignificant cancer. CpG island hypermethylation as a common epigenetic event is a well-recognized phenomenon during carcinogenesis. We have shown that hypermethylation at several gene loci distinguishes between benign and malignant forms of prostatic disorders. Furthermore using tests in cancer tissue and serum samples, one can draw prognostic conclusions and predict biochemical failure following radical prostatectomy with curative intent.


Asunto(s)
Islas de CpG/genética , Metilación de ADN/genética , Epigénesis Genética/genética , Marcadores Genéticos/genética , Neoplasias de la Próstata/genética , Transformación Celular Neoplásica/genética , Diagnóstico Diferencial , Regulación Neoplásica de la Expresión Génica/genética , Pruebas Genéticas , Gutatión-S-Transferasa pi/genética , Humanos , Masculino , Valor Predictivo de las Pruebas , Neoplasias de la Próstata/diagnóstico , Factores de Riesgo
12.
Urologe A ; 47(9): 1190-2, 2008 Sep.
Artículo en Alemán | MEDLINE | ID: mdl-18651121

RESUMEN

A better understanding of signal transduction and gene regulation during prostate carcinogenesis will allow the development of novel diagnostic and prognostic biomarkers and a better prediction of the individual course of prostate cancer disease. It will also enhance the design and development of specific small molecular components aiming for specific therapies. The research groups in Bonn succeeded in the competition for an endowed professorship supported by the Rudolf Becker Stiftung (German Science Endowment Fund) settled in the"Centrum für integrierte Onkologie" funded by the German Cancer Aid. This should be the perfect breeding ground for future research in the field of prostate cancer.


Asunto(s)
Biomarcadores de Tumor/genética , Neoplasias de la Próstata/genética , Apoptosis/genética , Línea Celular Tumoral , Islas de CpG/genética , Metilación de ADN/genética , Regulación Neoplásica de la Expresión Génica/genética , Investigación Genética , Humanos , Masculino , Pronóstico , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/terapia , Receptores Androgénicos/genética , Transducción de Señal/genética , Transcripción Genética/genética
13.
Urologe A ; 47(5): 620-3, 2008 May.
Artículo en Alemán | MEDLINE | ID: mdl-18210066
14.
Urologe A ; 47(9): 1224-8, 2008 Sep.
Artículo en Alemán | MEDLINE | ID: mdl-18696038

RESUMEN

The ever rising number of radical prostatectomies entails an increasing number of patients suffering from postoperative stress incontinence. Several minimally invasive techniques exist as surgical intervention options. All these procedures are based on an obstruction of the urethra. The functional retrourethral sling is a new and innovative sling suspension, which offers for the first time a non-obstructive functional therapeutic approach. The sling adjusts the changed anatomy after radical prostatectomy and exerts its effect by repositioning the lax and descended supporting structures of the sphincter in the former preoperative position. Thus continence can be achieved again. The success rate of this new technique is very good, yielding good results regarding both improving incontinence and continence rate. This new technique is secure and the results are reproducible.


Asunto(s)
Complicaciones Posoperatorias/cirugía , Prostatectomía , Neoplasias de la Próstata/cirugía , Cabestrillo Suburetral , Incontinencia Urinaria de Esfuerzo/cirugía , Estudios de Seguimiento , Humanos , Imagen por Resonancia Magnética , Masculino , Cuidados Posoperatorios , Complicaciones Posoperatorias/diagnóstico , Reoperación , Incontinencia Urinaria de Esfuerzo/diagnóstico , Urodinámica/fisiología , Urografía
15.
Aktuelle Urol ; 39(4): 298-304, 2008 Jul.
Artículo en Alemán | MEDLINE | ID: mdl-18663672

RESUMEN

In this work 85337 urinary stones were analysed by X-ray diffraction in regard of their qualitative and quantitative composition. Urological practitioners and hospitals from all areas of the former FRG sent urinary stones to the Institute of Mineralogy in Bonn and to the Urology Department of the St Josef-Hospital in Troisdorf up to December 31st, 1994. The evaluations were carried out with special regard to the frequency of occurrence and to the quantity portions. The frequency of occurrence of one component describes the percentage of the urinary stones which contain this component. The quantity portion describes the average amount of one component in regard to all urinary stones which contain this component as well. The frequency of occurrence of whewellite was 75.77% and of wheddellite 46.41%. 34.25% of all calculi were monomineralic and 55.3% were bimineralic.


Asunto(s)
Cristalografía por Rayos X , Cálculos Urinarios/química , Adolescente , Adulto , Factores de Edad , Anciano , Apatitas/análisis , Oxalato de Calcio/análisis , Niño , Preescolar , Estudios Transversales , Femenino , Alemania , Humanos , Lactante , Compuestos de Magnesio/análisis , Masculino , Persona de Mediana Edad , Fosfatos/análisis , Factores Sexuales , Estruvita , Ácido Úrico/análisis , Cálculos Urinarios/epidemiología
16.
Eur J Med Res ; 12(5): 212-5, 2007 May 29.
Artículo en Inglés | MEDLINE | ID: mdl-17513193

RESUMEN

Prostate cancer is the most common malignant tumor in men. Recently, a slightly decreased frequency of margin positivity following neoadjuvant bicalutamide treatment due to tumor shrinkage was reported. Trials investigating other anti-androgens in the past also reported lower frequencies of surgical margin positivity, but patients outcome has not improved. In this case, local recurrence was confirmed by needle biopsy in a patient five years following radical prostatectomy for prostate adenocarcinoma. After therapy with 50 mg bicalutamide for a month, the tumour was resected. Despite of detailed histological work-up and immunohistochemistry cancer suspicious lesions were not found. We think that bicalutamide may be capable of masking prostate cancer cells.


Asunto(s)
Adenocarcinoma/tratamiento farmacológico , Antagonistas de Andrógenos/efectos adversos , Anilidas/efectos adversos , Recurrencia Local de Neoplasia/patología , Nitrilos/efectos adversos , Neoplasias de la Próstata/tratamiento farmacológico , Compuestos de Tosilo/efectos adversos , Adenocarcinoma/sangre , Adenocarcinoma/patología , Biopsia con Aguja , Humanos , Inmunohistoquímica , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Recurrencia Local de Neoplasia/sangre , Próstata/efectos de los fármacos , Antígeno Prostático Específico/sangre , Prostatectomía , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/patología
17.
Urologe A ; 46(10): 1422-4, 2007 Oct.
Artículo en Alemán | MEDLINE | ID: mdl-17641862

RESUMEN

Alveolar soft part sarcoma is a rare soft tissue tumor. Most patients who are affected by this sarcoma are between 15 and 35 years old. The tumor is characterized by its uncommon location of metastasis. Publications concerning this sarcoma subform are rare and the best therapeutic procedure is not yet clear. Surgical excision, radiation and chemotherapy are performed, whereas complete surgical excision achieves the best results in long-term follow-up. We report a patient's history who rapidly died of his sickness despite the low initial tumor stage.


Asunto(s)
Neoplasias Abdominales/diagnóstico , Neoplasias Primarias Secundarias/diagnóstico , Sarcoma de Parte Blanda Alveolar/diagnóstico , Neoplasias Abdominales/patología , Neoplasias Abdominales/radioterapia , Neoplasias Abdominales/cirugía , Anciano , Capilares/patología , Diagnóstico Diferencial , Progresión de la Enfermedad , Resultado Fatal , Humanos , Escisión del Ganglio Linfático , Ganglios Linfáticos/patología , Metástasis Linfática/patología , Linfoma no Hodgkin/patología , Masculino , Recurrencia Local de Neoplasia/diagnóstico , Recurrencia Local de Neoplasia/patología , Recurrencia Local de Neoplasia/radioterapia , Recurrencia Local de Neoplasia/cirugía , Neoplasias Primarias Secundarias/patología , Neoplasias Primarias Secundarias/radioterapia , Neoplasias Primarias Secundarias/cirugía , Radioterapia Adyuvante , Retratamiento , Sarcoma de Parte Blanda Alveolar/patología , Sarcoma de Parte Blanda Alveolar/radioterapia , Sarcoma de Parte Blanda Alveolar/cirugía , Neoplasias Testiculares/patología , Tomografía Computarizada por Rayos X
18.
J Transplant ; 2017: 5362704, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28203455

RESUMEN

Background. This retrospective cohort study evaluates the advantages of risk balancing between prolonged cold ischemic time (CIT) and late night surgery. Methods. 1262 deceased donor kidney transplantations were analyzed. Multivariable regression was used to determine odds ratios (ORs) for reoperation, graft loss, delayed graft function (DGF), and discharge on dialysis. CIT was categorized according to a forward stepwise pattern ≤1h/>1h, ≤2h/>2h, ≤3h/>3h,…, ≤nh/>nh. ORs for DGF were plotted against CIT and a nonlinear regression function with best R2 was identified. First and second derivative were then implemented into the curvature formula k(x) = f''(x)/(1 + f'(x)2)3/2 to determine the point of highest CIT-mediated risk acceleration. Results. Surgery between 3 AM and 6 AM is an independent risk factor for reoperation and graft loss, whereas prolonged CIT is only relevant for DGF. CIT-mediated risk for DGF follows an exponential pattern f(x) = A · (1 + k · e(I · x)) with a cut-off for the highest risk increment at 23.5 hours. Conclusions. The risk of surgery at 3 AM-6 AM outweighs prolonged CIT when confined within 23.5 hours as determined by a new mathematical approach to calculate turning points of nonlinear time related risks. CIT is only relevant for the endpoint of DGF but had no impact on discharge on dialysis, reoperation, or graft loss.

19.
Int Urol Nephrol ; 49(2): 247-254, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27896578

RESUMEN

PURPOSE: To evaluate the possible association between bladder tumor location and the laterality of positive lymph nodes (LN) in a prospectively collected multi-institutional radical cystectomy (RC) series. METHODS: The study population included 148 node-positive bladder cancer (BC) patients undergoing RC and pelvic lymph node dissection in 2011 without neoadjuvant chemotherapy and without distant metastasis. Tumor location was classified as right, left or bilateral and compared to the laterality of positive pelvic LN. A logistic regression model was used to identify predictors of ipsilaterality of lymphatic spread. Using multivariate Cox regression analyses (median follow-up: 25 months), the effect of the laterality of positive LN on cancer-specific mortality (CSM) was estimated. RESULTS: Overall, median 18.5 LN [interquartile range (IQR), 11-27] were removed and 3 LN (IQR 1-5) were positive. There was concordance of tumor location and laterality of positive LN in 82% [95% confidence interval (CI), 76-89]. Patients with unilateral tumors (n = 78) harbored exclusively ipsilateral positive LN in 67% (95% CI 56-77). No criteria were found to predict ipsilateral positive LN in patients with unilateral tumors. CSM after 3 years in patients with ipsilateral, contralateral, and bilateral LN metastasis was 41, 67, and 100%, respectively (p = 0.042). However, no significant effect of the laterality of positive pelvic LN on CSM could be confirmed in multivariate analyses. CONCLUSIONS: Our prospective cohort showed a concordance of tumor location and laterality of LN metastasis in BC at RC without any predictive criteria and without any influence on CSM. It is debatable, whether these findings may contribute to a more individualized patient management.


Asunto(s)
Carcinoma de Células Transicionales , Cistectomía , Escisión del Ganglio Linfático/métodos , Vasos Linfáticos/patología , Pelvis/patología , Neoplasias de la Vejiga Urinaria , Vejiga Urinaria , Adulto , Anciano , Carcinoma de Células Transicionales/mortalidad , Carcinoma de Células Transicionales/patología , Carcinoma de Células Transicionales/cirugía , Cistectomía/efectos adversos , Cistectomía/métodos , Bases de Datos Factuales/estadística & datos numéricos , Femenino , Alemania/epidemiología , Humanos , Metástasis Linfática , Masculino , Persona de Mediana Edad , Análisis Multivariante , Evaluación de Procesos y Resultados en Atención de Salud , Análisis de Supervivencia , Vejiga Urinaria/patología , Vejiga Urinaria/cirugía , Neoplasias de la Vejiga Urinaria/mortalidad , Neoplasias de la Vejiga Urinaria/patología , Neoplasias de la Vejiga Urinaria/cirugía
20.
Prostate Cancer Prostatic Dis ; 20(4): 407-412, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-28485390

RESUMEN

BACKGROUND: Several randomized controlled trials assessed the outcomes of patients treated with neoadjuvant hormonal therapy (NHT) before radical prostatectomy (RP). The majority of them included mainly low and intermediate risk prostate cancer (PCa) without specifically assessing PCa-related death (PCRD). Thus, there is a lack of knowledge regarding a possible effect of NHT on PCRD in the high-risk PCa population. We aimed to analyze the effect of NHT on PCRD in a multicenter high-risk PCa population treated with RP, using a propensity-score adjustment. METHODS: This is a retrospective multi-institutional study including patients with high-risk PCa defined as: clinical stage T3-4, PSA >20 ng ml-1 or biopsy Gleason score 8-10. We compared PCRD between RP and NHT+RP using competing risks analysis. Correction for group differences was performed by propensity-score adjustment. RESULTS: After application of the inclusion/exclusion criteria, 1573 patients remained for analysis; 1170 patients received RP and 403 NHT+RP. Median follow-up was 56 months (interquartile range 29-88). Eighty-six patients died of PCa and 106 of other causes. NHT decreased the risk of PCRD (hazard ratio (HR) 0.5; 95% confidence interval (CI) 0.32-0.80; P=0.0014). An interaction effect between NHT and radiotherapy (RT) was observed (HR 0.3; 95% CI 0.21-0.43; P<0.0008). More specifically, of patients who received adjuvant RT, those who underwent NHT+RP had decreased PCRD rates (2.3% at 5 year) compared to RP (7.5% at 5 year). The retrospective design and lack of specific information about NHT are possible limitations. CONCLUSIONS: In this propensity-score adjusted analysis from a large high-risk PCa population, NHT before surgery significantly decreased PCRD. This effect appeared to be mainly driven by the early addition of RT post-surgery. The specific sequence of NHT+RP and adjuvant RT merits further study in the high-risk PCa population.


Asunto(s)
Antagonistas de Andrógenos/administración & dosificación , Antineoplásicos Hormonales/administración & dosificación , Neoplasias de la Próstata/tratamiento farmacológico , Neoplasias de la Próstata/mortalidad , Adulto , Anciano , Anciano de 80 o más Años , Humanos , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Antígeno Prostático Específico/sangre , Prostatectomía , Neoplasias de la Próstata/patología , Neoplasias de la Próstata/cirugía , Estudios Retrospectivos , Factores de Riesgo
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