Cribado de cáncer de pulmón: Supervivencia en un amplio programa de detección precoz en España (I-ELCAP) / Lung Cancer Screening: Survival in an Extensive Early Detection Program in Spain (I-ELCAP)

Introducción y objetivo: El cáncer de pulmón (CP) se diagnostica habitualmente en estadios avanzados con una supervivencia media a cinco años del 12%. Ensayos como el National Lung Screening Trial (NLST) y el NEderlands Leuvens longkanker Screenings ONderzoek (NELSON) demuestran una reducción de la mortalidad que justifican la implantación del cribado en población de riesgo. Nuestro objetivo es presentar los resultados de supervivencia del programa de cribado de CP más amplio de España con tomografía computarizada de baja dosis (TCBD). Métodos: Se analizaron los datos del programa Internacional de Detección Precoz de CP (IELCAP) en Valencia, España. Este programa reclutó fumadores o exfumadores con una edad entre 40- 80 años. Se comparan los resultados con otros programas de similar tamaño. Resultados: Un total de 8.278 participantes fueron reclutados con al menos dos rondas de seguimiento, hasta noviembre de 2020 (62,8% varones), realizando una media de seis rondas de cribado por individuo. Diagnosticamos 239 tumores en 12 años de seguimiento. El adenocarcinoma fue el tumor más frecuente con un 61,3% en estadio I. Las tasas de prevalencia e incidencia fueron de 1,5% y 1,4%, respectivamente, con una tasa de detección anual de 0,17. Las tasas de supervivencia cáncer específica a cinco años fueron del 90 y del 80,1% a 10 años. La adherencia fue de 96,84%. Conclusión: La experiencia del programa más amplio de España demuestra que la supervivencia se mejora cuando se realiza en equipos multidisciplinares con experiencia en CP y es similar a programas similares. (AU)

Introduction: Lung cancer (LC) is usually diagnosed at advanced stages with only a 12% 5-year survival. Trials as NLST and NELSON show a mortality decrease, which justifies implementation of lung cancer screening in risk population. Our objective was to show survival results of the largest LC screening program in Spain with low dosage computed tomography (LDCT). Methods: Clinical records from International Early Lung Cancer Detection Program (IELCAP) at Valencia, Spain were analysed. This program recruited volunteers, ever-smokers aged 40-80 years, since 2008. Results are compared to those from other similar sizeable programs. Results: A total of 8278 participants were screened with at least two-rounds until November 2020. A mean of 6 annual screening rounds were performed. We detected 239 tumours along 12-year follow-up. Adenocarcinoma was the most common histology, being 61.3% at stage I. The lung cancer prevalence and incidence proportion was 1.5% and 1.4%, respectively with an annual detection rate of 0.17. One-year survival and 10-year survival were 90% and 80.1%, respectively. Adherence was 96.84%. Conclusion: Largest lung cancer screening in Spain shows that survival is improved when is performed in multidisciplinary team experienced in management of LC, and is comparable to similar screening programs. (AU)

[Translated article] Lung Cancer Screening: Survival in an Extensive Early Detection Program in Spain (I-ELCAP) / Cribado de cáncer de pulmón: supervivencia en un amplio programa de detección precoz en España (I-ELCAP)

Introduction: Lung cancer (LC) is usually diagnosed at advanced stages with only a 12% 5-year survival. Trials as NLST and NELSON show a mortality decrease, which justifies implementation of lung cancer screening in risk population. Our objective was to show survival results of the largest LC screening program in Spain with low dosage computed tomography (LDCT). Methods: Clinical records from International Early Lung Cancer Detection Program (IELCAP) at Valencia, Spain were analysed. This program recruited volunteers, ever-smokers aged 40-80 years, since 2008. Results are compared to those from other similar sizeable programs. Results: A total of 8278 participants were screened with at least two-rounds until November 2020. A mean of 6 annual screening rounds were performed. We detected 239 tumours along 12-year follow-up. Adenocarcinoma was the most common histology, being 61.3% at stage I. The lung cancer prevalence and incidence proportion was 1.5% and 1.4%, respectively with an annual detection rate of 0.17. One-year survival and 10-year survival were 90% and 80.1%, respectively. Adherence was 96.84%. Conclusion: Largest lung cancer screening in Spain shows that survival is improved when is performed in multidisciplinary team experienced in management of LC, and is comparable to similar screening programs. (AU)

Introducción y objetivo: El cáncer de pulmón (CP) se diagnostica habitualmente en estadios avanzados con una supervivencia media a cinco años del 12%. Ensayos como el National Lung Screening Trial (NLST) y el NEderlands Leuvens longkanker Screenings ONderzoek (NELSON) demuestran una reducción de la mortalidad que justifican la implantación del cribado en población de riesgo. Nuestro objetivo es presentar los resultados de supervivencia del programa de cribado de CP más amplio de España con tomografía computarizada de baja dosis (TCBD). Métodos: Se analizaron los datos del programa Internacional de Detección Precoz de CP (IELCAP) en Valencia, España. Este programa reclutó fumadores o exfumadores con una edad entre 40- 80 años. Se comparan los resultados con otros programas de similar tamaño. Resultados: Un total de 8.278 participantes fueron reclutados con al menos dos rondas de seguimiento, hasta noviembre de 2020 (62,8% varones), realizando una media de seis rondas de cribado por individuo. Diagnosticamos 239 tumores en 12 años de seguimiento. El adenocarcinoma fue el tumor más frecuente con un 61,3% en estadio I. Las tasas de prevalencia e incidencia fueron de 1,5% y 1,4%, respectivamente, con una tasa de detección anual de 0,17. Las tasas de supervivencia cáncer específica a cinco años fueron del 90 y del 80,1% a 10 años. La adherencia fue de 96,84%. Conclusión: La experiencia del programa más amplio de España demuestra que la supervivencia se mejora cuando se realiza en equipos multidisciplinares con experiencia en CP y es similar a programas similares. (AU)

Lung Cancer Screening: Survival in an Extensive Early Detection Program in Spain (I-ELCAP). / Cribado de cáncer de pulmón: Supervivencia en un amplio programa de detección precoz en España (I-ELCAP).

INTRODUCTION: Lung cancer (LC) is usually diagnosed at advanced stages with only a 12% 5-year survival. Trials as NLST and NELSON show a mortality decrease, which justifies implementation of lung cancer screening in risk population. Our objective was to show survival results of the largest LC screening program in Spain with low dosage computed tomography (LDCT). METHODS: Clinical records from International Early Lung Cancer Detection Program (IELCAP) at Valencia, Spain were analysed. This program recruited volunteers, ever-smokers aged 40-80 years, since 2008. Results are compared to those from other similar sizeable programs. RESULTS: A total of 8278 participants were screened with at least two-rounds until November 2020. A mean of 6 annual screening rounds were performed. We detected 239 tumours along 12-year follow-up. Adenocarcinoma was the most common histology, being 61.3% at stage I. The lung cancer prevalence and incidence proportion was 1.5% and 1.4%, respectively with an annual detection rate of 0.17. One-year survival and 10-year survival were 90% and 80.1%, respectively. Adherence was 96.84%. CONCLUSION: Largest lung cancer screening in Spain shows that survival is improved when is performed in multidisciplinary team experienced in management of LC, and is comparable to similar screening programs.

Diagnóstico precoz del cáncer de pulmón: utilidad de la tomografía computarizada de baja dosis de radiación / Lung Cancer Screening: Use of Low-Dose Computed Tomography

Introducción: El pronóstico del cáncer de pulmón (CP) está relacionado directamente con el estadio de la enfermedad al diagnóstico. Material y métodos: Realizamos TC de baja dosis (TCBD) a personas asintomáticas ≥ 50 años, fumadores o exfumadores de ≥ 10 paquetes-año, sin antecedentes oncológicos. Seguimos un algoritmo de evaluación según el tamaño y la morfología de los nódulos. En los CP diagnosticados se estableció el tratamiento adecuado y el seguimiento fue de 5 años. Resultados: Estudiamos 4.951 personas (65,4% varones) con una media de edad de 56,89 ± 5,26 años; 550 presentaron nódulos. De 3.891 nódulos detectados, 692 (19,57%) fueron considerados positivos, hallando 38 tumores (36 CP). En el estudio anual, 224 sujetos mostraban algún nódulo, siendo 288 (7,91%) positivos (13 CP). En el 80% el control se realizó con TCBD y se indicó biopsia en el 5,8% (basal) y 7,6% (anual) de los nódulos positivos. La prevalencia fue del 0,89 y la incidencia del 0,1%. La sensibilidad, la especificidad, el VPP y el VPN en el estudio basal fueron del 92,31, del 89,54, del 6,55 y del 99,93%, respectivamente, y en el anual, del 76,92, del 95,7, del 4,52 y del 99,94%, respectivamente. Se detectaron 52 tumores (49 CP), 25 (52,08%) en estadio I. La supervivencia global de los CP fue del 58,5% a los 5 años, y la supervivencia cáncer específica, del 67,1% (75,8% en los pacientes quirúrgicos). Conclusiones: La TCBD integrada en un programa elaborado de detección y evaluación de nódulos es una herramienta útil para diagnosticar CP en estadio precoz

Introduction: The prognosis of lung cancer (LC) correlates directly with the stage of the disease at the time of diagnosis. Material and methods: We performed low-dose CT (LDCT) in asymptomatic individuals ≥ 50 years old, smokers or former smokers of ≥ 10 pack-years, with no history of cancer. We followed an evaluation algorithm, according to the size and morphology of the nodules. The appropriate treatment for the LC diagnosis was given and patients were followed up for 5 years. Results: We studied 4,951 individuals (65.4% males) with an average age of 56.89 ± 5.26 years; 550 presented nodules. Of the 3,891 nodules detected, 692 (19.57%) were considered positive, and 38 tumors (36 LC) were identified. In the annual follow-up, nodules were found in 224 subjects, 288 (7.91%) of which were positive (13 LC). In 80%, the study was performed with LDCT, and biopsy was indicated in 5.8% (baseline) and in 7.6% (annual) of the positive nodules. Prevalence was 0.89 and incidence was 0.1%. The sensitivity, specificity, PPV and NPV in the baseline study were 92.31, 89.54, 6.55 and 99.93%, respectively, and in the annual study, they were 76.92, 95.7, 4.52 and 99.94%, respectively. A total of 52 tumors were detected (49 LC), 25 (52.08%) in stage I. The 5-year overall survival rate for LC was 58.5% and cancer-specific survival was 67.1% (75.8% in surgical patients). Conclusion: LDCT integrated into an elaborate nodule detection and evaluation program is a useful tool for diagnosing early-stage LC

Lung Cancer Screening: Use of Low-Dose Computed Tomography. / Diagnóstico precoz del cáncer de pulmón: utilidad de la tomografía computarizada de baja dosis de radiación.

INTRODUCTION: The prognosis of lung cancer (LC) correlates directly with the stage of the disease at the time of diagnosis. MATERIAL AND METHODS: We performed low-dose CT (LDCT) in asymptomatic individuals ≥50years old, smokers or former smokers of ≥10 pack-years, with no history of cancer. We followed an evaluation algorithm, according to the size and morphology of the nodules. The appropriate treatment for the LC diagnosis was given and patients were followed up for 5years. RESULTS: We studied 4,951 individuals (65.4% males) with an average age of 56.89±5.26years; 550 presented nodules. Of the 3,891 nodules detected, 692 (19.57%) were considered positive, and 38 tumors (36LC) were identified. In the annual follow-up, nodules were found in 224 subjects, 288 (7.91%) of which were positive (13LC). In 80%, the study was performed with LDCT, and biopsy was indicated in 5.8% (baseline) and in 7.6% (annual) of the positive nodules. Prevalence was 0.89 and incidence was 0.1%. The sensitivity, specificity, PPV and NPV in the baseline study were 92.31, 89.54, 6.55 and 99.93%, respectively, and in the annual study, they were 76.92, 95.7, 4.52 and 99.94%, respectively. A total of 52 tumors were detected (49LC), 25 (52.08%) in stageI. The 5-year overall survival rate for LC was 58.5% and cancer-specific survival was 67.1% (75.8% in surgical patients). CONCLUSION: LDCT integrated into an elaborate nodule detection and evaluation program is a useful tool for diagnosing early-stage LC.

Differentiation of benign and malignant lung lesions: Dual-Energy Computed Tomography findings.

PURPOSE: To determine whether parameters generated by Dual-Energy Computed Tomography (DECT) can distinguish malignant from benign lung lesions. METHODS: A prospective review of 125 patients with 126 lung lesions (23 benign and 103 malignant) who underwent lung DECT during arterial phase. All lesions were confirmed by tissue sampling. A radiologist semi-automatically contoured lesions and placed regions of interest (ROIs) in paravertebral muscle (PVM) for normalization. Variables related to absorption in Hounsfield units (HU), effective atomic number (Zeff), iodine concentration (ρI) and spectral CT curves were assessed. Receiver operating characteristic (ROC) curves were generated to calculate sensitivity and specificity as predictors of malignancy. Multivariate logistic regression analysis was performed. RESULTS: Reproducibility of measures normalized with PVM was poor. Bivariate analysis showed minimum Zeff and normalized mean Zeff to be statistically significant (p=0.001), with area under the curve (AUC) values: 0.66 (CI 95% 0.54-0.80) and 0.72 (CI 95%, 0.60-0.84), respectively. Logistic regression models showed no differences between raw and normalized measurements. In both models, minimum HU (OR: 0.9) and size (OR: 0.1) were predictive of benign lesions. CONCLUSIONS: A quantitative approach to DECT using raw measurements is simpler than logistic regression models. Normalization to PVM was not clinically reliable due to its poor reproducibility. Further studies are needed to confirm our findings.

[Contribution of exhaled nitric oxide measurements to abbreviated bronchial challenge test protocols]. / Aportaciones del óxido nítrico exhalado a los procedimientos abreviados de las pruebas de provocación bronquial.

OBJECTIVE: The bronchial challenge test is commonly used to diagnose asthma but it is a tedious, time-consuming procedure. Although in recent years, several shortened methods have been proposed, it has been shown that they can give rise to exaggerated bronchoconstriction. The aims of the present study were a) to determine the frequency of exaggerated bronchoconstriction in patients with asthma following the application of a shortened bronchial challenge test, and b) to determine if the fraction of exhaled nitric oxide (FENO) can be used to predict the onset of exaggerated bronchoconstriction. PATIENTS AND METHODS: We performed a prospective study of 210 patients with asthma in whom FENO levels were measured in accordance with the abbreviated protocol recommended by the European Respiratory Society (ERS). Exaggerated bronchoconstriction was defined as a decrease of more than 20% in forced expiratory volume in 1 second after the first challenge, after a skipped dose, or after administration of saline. A receiver operating characteristic (ROC) curve was generated to determine the best FENO cutoff value for predicting exaggerated bronchoconstriction. The pretest probability of developing exaggerated bronchoconstriction was also calculated using Bayes' theorem. RESULTS: The frequency of exaggerated bronchoconstriction in our series was 30%. Patients who developed exaggerated bronchoconstriction had significantly higher FENO levels than those who did not (32.6 vs 16.2 parts per billion [ppb]). The chosen FENO cutoff of 19.5 ppb had a sensitivity of 80%, a specificity of 77%, and a negative predictive value of 88%. The area under the ROC curve was 0.83 (95% confidence interval, 0.77-0.89). CONCLUSIONS: The abbreviated bronchial challenge test recommended by the ERS led to exaggerated bronchoconstriction in 30% of the patients studied. FENO measurements could possibly be used to identify patients at increased risk of exaggerated bronchoconstriction. The shortened challenge test can be performed safely in individuals with a FENO of <19.5 ppb.

Aportaciones del óxido nítrico exhalado a los procedimientos abreviados de las pruebas de provocación bronquial / Contribution of exhaled nitric oxide measurements to abbreviated bronchial challenge test protocols

OBJETIVO: La prueba de provocación bronquial es un procedimiento habitual en el diagnóstico del asma, pero su realización resulta larga y tediosa. Por ello se han propuesto métodos que acortan su duración. Sin embargo, en los últimos años se ha señalado que dichos métodos pueden dar lugar a broncoconstricciones excesivas (BE). Los objetivos del presente estudio han sido: a) determinar la frecuencia de BE en pacientes con asma tras la aplicación del método abreviado de la prueba de provocación bronquial, y b) cuantificar si la determinación de óxido nítrico en aire exhalado (ONE) puede predecir la aparición de BE. PACIENTES Y MÉTODOS: Se ha realizado un estudio prospectivo sobre 210 asmáticos a quienes se determinó el ONE y se realizó una prueba de provocación bronquial siguiendo el protocolo abreviado de la European Respiratory Society (ERS). Se definió BE como una caída superior al 20% del volumen espiratorio forzado en el primer segundo tras la primera dosis, después de suprimir una dosis o tras el diluyente. Se construyó una curva de eficacia diagnóstica para determinar el mejor punto de corte del ONE para predecir BE y se calculó la probabilidad preprueba de presentar BE, siguiendo el teorema de Bayes. RESULTADOS: La frecuencia de BE en nuestra serie fue del 30%. Hubo diferencias significativas en el ONE, siendo la concentración más elevada en el grupo que presentó BE (32,6 frente a 16,2 ppb). El punto de corte de ONE elegido fue 19,5 ppb, con una sensibilidad del 80%, especificidad del 77% y valor predictivo negativo del 88%. El área bajo la curva de eficacia diagnóstica fue de 0,83 (intervalo de confianza del 95%, 0,77-0,89). CONCLUSIONES: La prueba de provocación bronquial abreviada que recomienda la ERS da lugar a un 30% de BE. La determinación de ONE podría identificar a los pacientes con mayor probabilidad de presentar BE. Una concentración de ONE inferior a 19,5 ppb permite realizar la prueba de provocación bronquial abreviada con seguridad

OBJECTIVE: The bronchial challenge test is commonly used to diagnose asthma but it is a tedious, time-consuming procedure. Although in recent years, several shortened methods have been proposed, it has been shown that they can give rise to exaggerated bronchoconstriction. The aims of the present study were a) to determine the frequency of exaggerated bronchoconstriction in patients with asthma following the application of a shortened bronchial challenge test, and b) to determine if the fraction of exhaled nitric oxide (FENO) can be used to predict the onset of exaggerated bronchoconstriction. PATIENTS AND METHODS: We performed a prospective study of 210 patients with asthma in whom FENO levels were measured in accordance with the abbreviated protocol recommended by the European Respiratory Society (ERS). Exaggerated bronchoconstriction was defined as a decrease of more than 20% in forced expiratory volume in 1 second after the first challenge, after a skipped dose, or after administration of saline. A receiver operating characteristic (ROC) curve was generated to determine the best FENO cutoff value for predicting exaggerated bronchoconstriction. The pretest probability of developing exaggerated bronchoconstriction was also calculated using Bayes' theorem. RESULTS: The frequency of exaggerated bronchoconstriction in our series was 30%. Patients who developed exaggerated bronchoconstriction had significantly higher FENO levels than those who did not (32.6 vs 16.2 parts per billion [ppb]). The chosen FENO cutoff of 19.5 ppb had a sensitivity of 80%, a specificity of 77%, and a negative predictive value of 88%. The area under the ROC curve was 0.83 (95% confidence interval, 0.77-0.89). CONCLUSIONS: The abbreviated bronchial challenge test recommended by the ERS led to exaggerated bronchoconstriction in 30% of the patients studied. FENO measurements could possibly be used to identify patients at increased risk of exaggerated bronchoconstriction. The shortened challenge test can be performed safely in individuals with a FENO of <19.5 ppb