neumonitis por hipersensibilidad) Hemos observado una buena correlación entre el cociente CD4/CD8 obtenido por EI y LBA en pacientes con diferentes tipos de infiltrados pulmonares difusos.Este hecho podría ser de crucial importancia, ya que en un trabajo previo hemos encontrado que el cociente CD4/CD8 mayor que la unidad posee valor pronóstico para el cálculo de una respuesta favorable a los esteroides.60–Puede el esputo inducido reemplazar al lavado broncoalveolar Consideramos que en quienes no está contraindicado el LBA, éste es el que debería efectuarse. Para quienes no pueden someterse a este procedimiento creemos que el EI proporcionará información igualmente satisfactoria para fines diagnósticos. En la sarcoidosis, los criterios actualizados para la identificación de la enfermedad activa se basan en criterios clínicos, radiografía y tomografía computarizada de tórax, un estudio con galio, pruebas de evaluación de la función pulmonar, LBA con biopsia transbronqial y marcadores séricos. 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