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Factores predictivos de neoplasia vesical metacrónica tras nefroureterectomía
Predictive factors of metachronous bladder neoplasm after nephroureterectomy
Andres Rodriguez Alonso1,a, Alfonso Gonzalez Blancoa, Alfonso Barbagelata Lopeza, Salvador Pita Fernandez*, Carlos Bonelli Martina, Miguel A. Cuerpo Pereza
a Servicio de Urología, Hospital Arquitecto Marcide, Ferrol, La Coruña, España
* Unidad de Epidemiología Clínica y Bioestadística, Hospital Juan Canalejo. La Coruña, España
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Determinar factores pronosticos de recidiva vesical en pacientes con carcinoma urotelial del tracto urinario superior &#40;TUS&#41;&#44; tratados mediante nefroureterectomia&#46;</p> <span class="elsevierStyleSectionTitle">Material y m&#233;todos</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Pacientes &#40;N&#61;51&#41; con carcinoma de celulas transicionales del TUS tratados mediante nefroureterectomia&#46; Se realizo un estudio observacional de cohorte retrospectivo y prospectivo durante el periodo 1995-2007&#44; en el Hospital Arquitecto Marcide&#44; Area Sanitaria de Ferrol&#44; La Coruna&#46; Se analizaron las diferencias entre grupos con y sin recidiva vesical mediante test chi-cuadrado en variables cualitativas y test t-Student y U Mann-Whitney en variables cuantitativas&#46; Se estudio la supervivencia libre de recidiva vesical &#40;SLRV&#41; mediante la metodologia de Kaplan-Meier&#44; desarrollando un modelo multivariado de regresion de Cox para identificar variables asociadas a recidiva vesical&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">La media de edad fue 68&#44;51-12&#44;11 anos &#40;24-86&#41;&#46; La distribucion por grado histologico fue la siguiente&#58; 7 g1 &#40;13&#44;72&#37;&#41;&#44; 20 g2 &#40;39&#44;21&#37;&#41;&#44; 23 g3 &#40;45&#44;10&#37;&#41; y 1 caso indeterminado &#40;1&#44;97&#37;&#41;&#46; En cuanto a la categoria pt&#44; 19 casos eran pt1 &#40;37&#44;25&#37;&#41;&#44; 12 pt2 &#40;23&#44;53&#37;&#41;&#44; 19 pt3 &#40;37&#44;25&#37;&#41; y 1 caso indeterminado &#40;1&#44;97&#37;&#41;&#46; Durante el seguimiento se detecto recidiva vesical en 16 pacientes &#40;31&#44;37&#37;&#41;&#46; El 70&#44;59&#37; de las recidivas se identificaron durante los dos primeros anos de seguimiento&#46; Entre los pacientes sin y con recidiva vesical se detectaron diferencias relacionadas con tiempo de seguimiento&#44; existencia de uropatia obstructiva&#44; morfologia microscopica y multifocalidad tumoral&#46; La SLRV al cabo de 1&#44; 2&#44; 5 y 10 anos fue del 85&#44;10&#37;&#44; 67&#44;90&#37;&#44; 56&#44;60&#37; y 31&#44;80&#37;&#44; respectivamente&#46; La SLRV se modifico significativamente en funcion de la localizacion &#40;p&#61;0&#44;019&#41; y la multifocalidad &#40;p&#61;0&#44;002&#41; tumorales&#46; En el analisis multivariado se observo que la multifocalidad tumoral predecia de forma independiente la recidiva vesical &#40;rr&#61;7&#44;35&#59;95&#37;ic&#61;1&#44;57-34&#44;45&#59;p&#61;0&#44;011&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">El desarrollo de recidiva vesical tras nefroureterectomia se observa en el 31&#44;37&#37; del los pacientes de nuestro estudio&#44; detectandose la mayoria de los episodios durante los dos primeros anos de seguimiento&#46; La multifocalidad tumoral en el TUS es el factor de riesgo mas importante para el desarrollo de recidiva vesical&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Purpose</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">To determine prognostic factors of bladder recurrence in patients with upper urinary tract &#40;UUT&#41; urothelial carcinoma&#44; who underwent nephroureterectomy&#46;</p> <span class="elsevierStyleSectionTitle">Material and methods</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Patients &#40;N&#61;51&#41; with UUT transitional cell carcinoma who underwent nephroureterectomy&#46; A Retrospective and prospective observational cohort study was made during the period 1995-2007&#44; at Arquitecto Marcide Hospital&#44; Ferrol Health Area&#44; La Coruna&#46; Differences between groups with and without recurrence were analized by means of chi-squared test in qualitative variables and t-Student and U Mann-Whitney test in quantitative variables&#46; Kaplan-Meier methodology was used in order to predict bladder recurrence free survival &#40;BRFS&#41;&#44; developing a multivariate Cox regression model to identify variables related to bladder recurrence&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Mean age of patients was 68&#46;51-12&#46;11 &#40;24-86&#41;&#46; Histological grade distribution was as follows&#58; 7 g1 &#40;13&#46;72&#37;&#41;&#44; 20 g2 &#40;39&#46;21&#37;&#41;&#44; 23 g3 &#40;45&#46;10&#37;&#41; and 1 undetermined case&#40;1&#46;97&#37;&#41;&#46; With regard to pT category&#44; 19 cases were pt1&#40;37&#46;25&#37;&#41;&#44; 12 pt2 &#40;23&#46;53&#37;&#41;&#44; 19 pt3 &#40;37&#46;25&#37;&#41; y 1 case undetermined &#40;1&#46;97&#37;&#41;&#46; Bladder recurrence was detected in 16 patients during follow-up &#40;31&#46;37&#37;&#41;&#46; 70&#46;59&#37; of recurrences were identified during first two years of follow-up&#46; Differences related to follow-up period&#44; presence of obstructive uropathy&#44; microscopic growth pattern and tumour multifocality&#44; were observed between patients without and with bladder recurrence&#46; BRFS rates at 1&#44; 2&#44; 5 and 10 years were 85&#46;10&#37;&#44; 67&#46;90&#37;&#44; 56&#46;60&#37; y 31&#46;80&#37;&#44; respectively&#46; BRFS was significantly modified by tumour location &#40;p&#61;0&#46;019&#41; and tumour multifocality &#40;p&#61;0&#46;002&#41;&#46; Multivariate analysis showed that tumour multifocality was an independent factor in the prediction of bladder recurrence &#40;rr&#61;7&#46;35&#59;95&#37;ci&#61;1&#46;57-34&#46;45&#59;p&#61;0&#46;011&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">The development of bladder recurrence after nephroureterectomy was observed in 31&#46;37&#37; of patients in our study&#44; detecting most of events during the first two years of follow-up&#46; Tumour multifocality in UUT constitutes the most important risk factor for the development of bladder recurrence&#46;</p>"
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ISSN: 02104806
Idioma original: Español
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