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        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">The role of different techniques formediastinal staging in patients with suspected lung cancer isa subject of debate&#46; The aim of this study was to analyze the diagnostic yield and cost-effectiveness of transbronchialneedle aspiration in the mediastinal staging of lung cancerin patients being evaluated in a tertiary hospital&#46;</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p class="elsevierStyleSimplePara elsevierViewall">This was a retrospective&#44; observational study of the results of transbronchial needleaspiration in patients with suspected lung cancer andmediastinal lymph node involvement&#46; A cost-effectivenessanalysis of the systematic use of this technique was also performed&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">One-hundred ninety-four patients &#40;85&#37; men&#44;15&#37; women&#41; were evaluated&#46; The diagnosis of lung cancerwas confirmed in 157 &#40;81&#37;&#41;&#46; Cytology samples obtained bytransbronchial needle aspiration were adequate in 147 &#40;76&#37;&#41;of the 194 cases&#46; When only the adequate samples wereincluded in the analysis&#44; transbronchial needle aspirationshowed a sensitivity of 88&#37;&#44; specificity of 100&#37;&#44; positivepredictive value of 100&#37;&#44; negative predictive value of 64&#37;&#44; and efficiency of 90&#37;&#46; Mediastinoscopy was avoided in 44 &#40;34&#37;&#41; of the 127 patients with localized non-small celllung cancer&#44; with an estimated saving of &#8364;119 456&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">Transbronchial needle aspiration has a highdiagnostic yield and obviates the need for mediastinoscopy ina significant percentage of cases&#46; This finding is of diagnosticand economic significance&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Existe controversia sobre el papel de las dife-rentes t&#233;cnicas diagn&#243;sticas en la estadificaci&#243;n del mediasti-no en pacientes con sospecha de c&#225;ncer de pulm&#243;n&#46; El obje-tivo del estudio ha sido analizar la rentabilidad diagn&#243;sticay el coste-beneficio de la punci&#243;n transbronquial aspirativa&#40;PTA&#41; en la estadificaci&#243;n mediast&#237;nica del c&#225;ncer de pul-m&#243;n&#44; en pacientes evaluados en un hospital de tercer nivel&#46;</p> <span class="elsevierStyleSectionTitle">Pacientes y m&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">Se ha realizado un estudio obser-vacional retrospectivo&#44; en el que se han analizado los resul-tados de las PTA practicadas a pacientes con sospecha dec&#225;ncer de pulm&#243;n y adenopat&#237;as mediast&#237;nicas patol&#243;gicas&#46; Tambi&#233;n se ha evaluado el coste-beneficio de la aplicaci&#243;nsistem&#225;tica de esta t&#233;cnica&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Se evalu&#243; a 194 pacientes &#40;un 85&#37; varonesy un 15&#37; mujeres&#41;&#44; en 157 de los cuales &#40;81&#37;&#41; se confirm&#243;el diagn&#243;stico de c&#225;ncer de pulm&#243;n&#46; La muestra citol&#243;gicaque se obtuvo de la PTA fue adecuada en 147 de los 194 ca-sos &#40;76&#37;&#41;&#46; Cuando se analizaron las muestras adecuadas&#44; lasensibilidad de la PTA fue del 88&#37;&#44; la especificidad del100&#37;&#44; el valor predictivo positivo del 100&#37;&#44; el valor predic-tivo negativo del 64&#37; y el valor global del 90&#37;&#46; En 44 de los127 casos &#40;34&#37;&#41; con c&#225;ncer de pulm&#243;n no microc&#237;tico locali-zado se evit&#243; la realizaci&#243;n de una mediastinoscopia&#44; lo querepresent&#243; un ahorro econ&#243;mico estimado de 119&#46;456 &#8364;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">La PTA es una t&#233;cnica con una elevadarentabilidad diagn&#243;stica que puede evitar la realizaci&#243;n deuna mediastinoscopia en un porcentaje significativo de pa-cientes&#44; con las consiguientes implicaciones terap&#233;uticas yecon&#243;micas que ello conlleva&#46;</p>"
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Original Articles
Transbronchial Needle Aspiration in the Study of Mediastinal Lymph Nodes: Yield and Cost-Effectiveness
Pilar Martínez-Olondrisa, María Molina-Molinaa, Antoni Xaubeta, Ramón María Marradesa, Patricio Luburichb, José Ramírezc, Antoni Torresa, Carlos Agustía,
Corresponding author
cagusti@clinic.ub.es

Correspondence:Dr C. AgustíServei de Pneumologia, Hospital Clínic Villarroel, 17008036 Barcelona, Spain
a Servei de Pneumologia, Institut Clínic del Tòrax, IDIBAPS, Hospital Clínic, CIBER Enfermedades Respiratorias, Barcelona, Spain
b Servei de Radiodiagnòstic, Hospital Clínic, Barcelona, Spain
c Servei d'Anatomia Patològica, Hospital Clínic, Barcelona, Spain
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">The role of different techniques formediastinal staging in patients with suspected lung cancer isa subject of debate&#46; The aim of this study was to analyze the diagnostic yield and cost-effectiveness of transbronchialneedle aspiration in the mediastinal staging of lung cancerin patients being evaluated in a tertiary hospital&#46;</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p class="elsevierStyleSimplePara elsevierViewall">This was a retrospective&#44; observational study of the results of transbronchial needleaspiration in patients with suspected lung cancer andmediastinal lymph node involvement&#46; A cost-effectivenessanalysis of the systematic use of this technique was also performed&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">One-hundred ninety-four patients &#40;85&#37; men&#44;15&#37; women&#41; were evaluated&#46; The diagnosis of lung cancerwas confirmed in 157 &#40;81&#37;&#41;&#46; Cytology samples obtained bytransbronchial needle aspiration were adequate in 147 &#40;76&#37;&#41;of the 194 cases&#46; When only the adequate samples wereincluded in the analysis&#44; transbronchial needle aspirationshowed a sensitivity of 88&#37;&#44; specificity of 100&#37;&#44; positivepredictive value of 100&#37;&#44; negative predictive value of 64&#37;&#44; and efficiency of 90&#37;&#46; Mediastinoscopy was avoided in 44 &#40;34&#37;&#41; of the 127 patients with localized non-small celllung cancer&#44; with an estimated saving of &#8364;119 456&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">Transbronchial needle aspiration has a highdiagnostic yield and obviates the need for mediastinoscopy ina significant percentage of cases&#46; This finding is of diagnosticand economic significance&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Existe controversia sobre el papel de las dife-rentes t&#233;cnicas diagn&#243;sticas en la estadificaci&#243;n del mediasti-no en pacientes con sospecha de c&#225;ncer de pulm&#243;n&#46; El obje-tivo del estudio ha sido analizar la rentabilidad diagn&#243;sticay el coste-beneficio de la punci&#243;n transbronquial aspirativa&#40;PTA&#41; en la estadificaci&#243;n mediast&#237;nica del c&#225;ncer de pul-m&#243;n&#44; en pacientes evaluados en un hospital de tercer nivel&#46;</p> <span class="elsevierStyleSectionTitle">Pacientes y m&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">Se ha realizado un estudio obser-vacional retrospectivo&#44; en el que se han analizado los resul-tados de las PTA practicadas a pacientes con sospecha dec&#225;ncer de pulm&#243;n y adenopat&#237;as mediast&#237;nicas patol&#243;gicas&#46; Tambi&#233;n se ha evaluado el coste-beneficio de la aplicaci&#243;nsistem&#225;tica de esta t&#233;cnica&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Se evalu&#243; a 194 pacientes &#40;un 85&#37; varonesy un 15&#37; mujeres&#41;&#44; en 157 de los cuales &#40;81&#37;&#41; se confirm&#243;el diagn&#243;stico de c&#225;ncer de pulm&#243;n&#46; La muestra citol&#243;gicaque se obtuvo de la PTA fue adecuada en 147 de los 194 ca-sos &#40;76&#37;&#41;&#46; Cuando se analizaron las muestras adecuadas&#44; lasensibilidad de la PTA fue del 88&#37;&#44; la especificidad del100&#37;&#44; el valor predictivo positivo del 100&#37;&#44; el valor predic-tivo negativo del 64&#37; y el valor global del 90&#37;&#46; En 44 de los127 casos &#40;34&#37;&#41; con c&#225;ncer de pulm&#243;n no microc&#237;tico locali-zado se evit&#243; la realizaci&#243;n de una mediastinoscopia&#44; lo querepresent&#243; un ahorro econ&#243;mico estimado de 119&#46;456 &#8364;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">La PTA es una t&#233;cnica con una elevadarentabilidad diagn&#243;stica que puede evitar la realizaci&#243;n deuna mediastinoscopia en un porcentaje significativo de pa-cientes&#44; con las consiguientes implicaciones terap&#233;uticas yecon&#243;micas que ello conlleva&#46;</p>"
      ]
    ]
    "NotaPie" => array:1 [
      0 => array:1 [
        "nota" => "<p class="elsevierStyleNotepara">This study was partially financed by FUCAP-05 &#40;Catalan Pneumology Foundation grant&#41;&#46;</p>"
      ]
    ]
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