Mesotelioma y ocupación: revisión de casos en Uruguay: 2002-2014 / Mesothelioma and occupation: review of cases in Uruguay: 2002-2014 / Mesotelioma e ocupação: revisão de casos no Uruguai: 2002-2014

El mesotelioma es considerado en el mundo industrializado a consecuencia de la exposición ocupacional a fibras de asbesto. A nivel país se considera una enfermedad profesional. El objetivo del presente trabajo fue conocer y describir casos de mesotelioma notificados en Uruguay entre los años 2002 y 2014, con énfasis en los aspectos de la exposición ocupacional. El presente trabajo corresponde a un estudio descriptivo retrospectivo, a partir de los casos notificados se recrearon historias médicas enlazando con datos de servicios asistenciales. Se identificaron fuentes de exposición al asbesto en diferentes ocupaciones e industrias en el país. Resultados: fueron notificados 122 casos. Se accedió a la historia clínica en un tercio (47/122). El dato ocupación estaba consignado solo en 27/47, en 3/47 se explicitaba la exposición al asbesto/amianto. Los sectores productivos identificados mayoritariamente correspondieron a transporte, metalúrgico, construcción y limpieza. Se evidenció un registro insuficiente del dato ocupación y de los antecedentes laborales. Ésta información laboral es fundamental para establecer el nexo causal de la exposición en estudio y la condición de enfermedad profesional. La gravedad de la enfermedad y el conocimiento del riesgo derivado de la exposición, laboral, justifica el desarrollo de políticas en salud ocupacional. Es necesario fortalecer la formación de los profesionales de la salud sobre la importancia del trabajo como determinante del proceso salud - enfermedad.

Mesothelioma is considered in the industrialized world as a consequence of occupational exposure to asbestos fibers - asbestos. At the country level it is considered an occupational disease. The objective was to know and describe cases of mesothelioma notified in Uruguay between the years 2002 and 2014, with emphasis on aspects of occupational exposure. The present work corresponds to a retrospective descriptive study, from the reported cases medical records were recreated linking with data from healthcare services. Sources of asbestos exposure were identified in different occupations and industries in the country. Results: 122 cases were notified. The medical history was accessed in one third (47/122). The occupation data was only in 27/47, in 3/47 the exposure to asbestos / asbestos was specified. The productive sectors identified mainly corresponded to transportation, metallurgy, construction and cleaning. Insufficient registration of occupation and employment history was evidenced. This work information is essential to establish the causal link between the exposure under study and the occupational disease condition. The severity of the disease and knowledge of the risk derived from exposure occupational, justify the development of occupation health policies. It is necessary to strengthen the training of health professionals on the importance of work as a determinant of the health - disease process.

O mesotelioma é considerado no mundo industrializado como consequência da exposição ocupacional às fibras de amianto - o asbesto. Em nível nacional, é considerada uma doença ocupacional. O objetivo foi conhecer e descrever os casos de mesotelioma notificados no Uruguai entre os anos de 2002 a 2014, com ênfase nos aspectos de exposição ocupacional. O presente trabalho corresponde a um estudo descritivo retrospectivo, a partir dos casos relatados, prontuários médicos foram recriados vinculando-os a dados de serviços de saúde. Fontes de exposição ao amianto foram identificadas em diferentes ocupações e indústrias no país. Resultados: foram notificados 122 casos. O histórico médico foi acessado em um terço (47/122). Os dados de ocupação foram apenas em 27/47, em 3/47 foi especificada a exposição ao amianto / amianto. Os setores produtivos identificados corresponderam principalmente a transportes, metalurgia, construção e limpeza. Foi evidenciado registro insuficiente de ocupação e histórico de empregos. Essas informações de trabalho são essenciais para estabelecer o nexo causal entre a exposição em estudo e a condição de doença ocupacional. A gravidade da doença e o conhecimento do risco decorrente da exposição ocupacional, justificam o desenvolvimento de políticas de saúde ocupacional. É preciso fortalecer a formação dos profissionais de saúde sobre a importância do trabalho como determinante do processo saúde - doença.

Tratamento Quimioterápico do Mesotelioma Pleural Maligno: Revisão Sistemática / Malignant Pleural Mesothelioma Chemotherapy Treatment: Systematic Review / Tratamiento Quimioterápico del Mesotelioma Pleural Maligno: Revisión Sistemática

Introdução: O mesotelioma pleural maligno é um câncer raro, agressivo e que apresenta expectativa de aumento na incidência até 2030. As melhores formas de tratar essa neoplasia continuam em debate. Objetivo: Sintetizar as evidências de eficácia e segurança dos esquemas quimioterápicos de primeira linha disponíveis para o tratamento do mesotelioma pleural maligno. Método: Foram utilizadas as bases bibliográficas LILACS, MEDLINE, Scopus, Cochrane Controlled Trials Register e Web of Science. Buscaram-se estudos na literatura cinzenta. Os critérios de elegibilidade incluíram ensaios randomizados de fases II ou III, de pacientes com mesotelioma pleural virgem de tratamento quimioterápico, submetidos a qualquer regime terapêutico, tendo como controle outros esquemas quimioterápicos ou controle ativo de sintomas, e apresentando tempo de sobrevida global, tempo livre de progressão, resposta tumoral e toxicidade como desfechos. Todas as etapas foram realizadas por dois revisores, de forma independente. O protocolo da revisão foi registrado no International Prospective Register of Systematic Reviews (PROSPERO 2014: CRD42014014388). Resultados: Treze estudos envolvendo 14 esquemas terapêuticos foram incluídos. O único esquema quimioterápico que se apresentou superior ao comparado com significância estatística nos três desfechos de eficácia foi cisplatina + pemetrexede. Cisplatina + pemetrexede e cisplatina + gemcitabina apresentaram mais casos de toxicidade graus 3 e 4. Conclusão: Existem boas evidências para recomendar combinações de derivado de platina e antifolato como opção de primeira escolha no tratamento quimioterápico do mesotelioma pleural. Mais estudos clínicos são necessários para embasar decisões de incorporação dos antifolatos no tratamento rotineiro dessa neoplasia no Brasil.

Introduction: Malignant pleural mesothelioma is a rare, aggressive cancer that is expected to increase in incidence by 2030. The best ways to treat this neoplasm are still under discussion. Objective: To synthesize the evidence of efficacy and safety of the different first-line chemotherapy regimens available for the treatment of malignant pleural mesothelioma. Method:The LILACS, MEDLINE, Scopus, Cochrane Controlled Trials Register and Web of Science bibliographic databases were used. Studies were sought in the grey literature. Eligibility criteria included randomized phase II or III trials of chemotherapy-naive patients with pleural mesothelioma who underwent any therapeutic regimen, compared to other chemotherapeutic regimens or active symptom control, and presenting overall survival, progression free survival, tumor response and toxicity as outcomes. All steps were performed independently by two reviewers. The review protocol was recorded in the International Prospective Register of Systematic Reviews (PROSPERO 2014: CRD42014014388). Results: Thirteen studies involving fourteen therapeutic regimens were included. The only chemotherapy regimen that presented superior to the comparator with statistical significance in the three efficacy outcomes was cisplatin + pemetrexed. Cisplatin + pemetrexed and cisplatin + gemcitabine presented more grades 3 and 4 toxicity cases. Conclusion: There is good evidence to recommend combinations of platinum and antifolate derivatives as a first-choice option in the chemotherapeutic treatment of pleural mesothelioma. Further clinical studies are needed to support decisions to incorporate antifolates in the routine treatment of this neoplasm in Brazil.

Introducción: El mesotelioma pleural maligno es un cáncer raro, agresivo y que presenta expectativa de aumento en la incidencia hasta 2030. Objetivo: Sintetizar las evidencias de eficacia y seguridad de los diferentes esquemas quimioterápicos de primera línea disponibles para el tratamiento del mesotelioma pleural maligno. Método: Se utilizaron las bases bibliográficas LILACS, MEDLINE, Scopus, Cochrane Controlled Trials Register y Web of Science. Se buscó estudios en la literatura gris. Los criterios de elegibilidad incluyeron ensayos aleatorizados de fase II o III, de pacientes con mesotelioma pleural vírgenes de tratamiento quimioterápico, sometidos a cualquier régimen terapéutico, teniendo como control otros esquemas quimioterápicos o control activo de síntomas, y presentando tiempo de supervivencia global, tiempo libre de progresión, respuesta tumoral y toxicidad como resultados. Todas las etapas fueron realizadas por dos revisores, de forma independiente. El protocolo de la revisión se registró en el International Prospective Register of Systematic Reviews (PROSPERO 2014: CRD42014014388). Resultados: Se incluyeron trece estudios de catorce esquemas terapéuticos. El único esquema uimioterápico que se presentó superior al comparador con significancia estadística en los tres resultados de eficacia fue cisplatino + pemetrexede. Cisplatino + pemetrexed y cisplatino + gemcitabina presentaron más casos de toxicidad grados 3 y 4. Conclusion: Existen buenas evidencias para recomendar combinaciones de derivado de platino y antifolato como opción de primera elección en el tratamiento quimioterápico del mesotelioma pleural. Más estudios clínicos son necesarios para basar decisiones de incorporación de los antifolatos en el tratamiento rutinario de esa neoplasia en Brasil.

Uma proposta de criação de um sistema para monitoramento dos casos de mesotelioma maligno em Curitiba, Paraná, Brasil / A proposal for the creation of a system to monitor cases of malignant mesothelioma in Curitiba, Paraná, Brazil / Una propuesta de creación de un sistema para la supervisión de los casos de mesotelioma maligno en Curitiba, Paraná, Brasil

Este estudo objetivou propor a criação de um sistema de monitoramento dos casos de mesotelioma maligno no Município de Curitiba, Paraná, Brasil, desenvolvido com base no modelo italiano. Trata-se de uma pesquisa-ação tipo diagnóstica, que utiliza as fases exploratória e de planejamento, desenvolvida no período de julho de 2015 a maio de 2017. Utilizaram-se como ferramentas de busca os seguintes instrumentos: Integrador de Registro Hospitalar de Câncer, com as morfologias específicas para mesotelioma; Registro Hospitalar de Câncer, com os códigos C38.4 e C45, da Classificação Internacional de Doenças, 10ª revisão, e/ou registros codificados pelo CID-O, com as topografias C38 e C48; Registro de Câncer de base populacional da Secretaria Municipal de Saúde de Curitiba, com os mesmos códigos. Também foram conhecidos, analisados e adaptados para a realidade brasileira o modelo, os questionários e o software de registro de mesotelioma da Lombardia, na Itália. Observou-se que, no Integrador de Registro Hospitalar de Câncer, foram registrados 15 casos de mesotelioma. No Registro Hospitalar de Câncer do hospital universitário, foram dois. No hospital oncológico, 16. Os dados do Registro de Câncer de Base Populacional, por sua vez, indicaram 317 registros relativos ao período. Apesar de algumas informações estarem mais completas, existe a falta de dados relacionados à história laboral, impossibilitando estabelecer o nexo causal. Com o aumento do número de casos de mesotelioma previstos para as próximas décadas e o atendimento às demandas legais, a implantação de registros torna-se essencial para auxiliar no conhecimento, no acompanhamento, na determinação de nexo causal e nas fontes de contaminação específicas no país.

The study proposes the creation of a system to monitor cases of malignant mesothelioma in the municipality of Curitiba, Paraná State, Brazil, based on the Italian model. This diagnosis-type action-research project featured exploratory and planning phases conducted from July 2015 to May 2017. The following search tools were used: Hospital-Based Cancer Registries Integrator with specific morphologies for mesothelioma; Hospital-Based Cancer Registry with codes C38.4 and C45 of the International Classification of Diseases, 10th revision, and/or records coded by the ICD-O with topographies C38 and C48; Population-Based Cancer Registry of the Curitiba Municipal Health Department, with the same codes. The study also identified, analyzed, and adapted to the Brazilian reality the model, questionnaires, and registry software for mesothelioma from Lombardy, Italy. Fifteen cases of mesothelioma were recorded in the Hospital-Based Cancer Registries Integrator. Two cases were recorded in the University Hospital-Based Cancer Registry and 16 in the Cancer Hospital. There were 317 cases recorded in the Population-Based Cancer Registry during the same period. Although some information was complete, data were lacking on patients' occupational history, thereby preventing the determination of a causal nexus. Given a predicted increase in cases of mesothelioma in the coming decades and the response to court cases, the implementation of registries has become essential to facilitate knowledge and follow-up on the determination of the causal link and specific sources of asbestos exposure in the country.

El objetivo de este estudio fue proponer la creación de un sistema de monitoreo de casos de mesotelioma maligno en el municipio de Curitiba, Paraná, Brasil, desarrollado en base al modelo italiano. Se trata de una investigación-acción de tipo diagnóstica, que usa fases de carácter exploratorio y de planificación, desarrolladas durante el período de julio de 2015 a mayo de 2017. Se utilizaron como herramientas de búsqueda los siguientes instrumentos: Integrador del Registro Hospitalario de Cáncer con morfologías específicas para mesotelioma; Registro Hospitalario de Cáncer con los códigos C38.4 y C45, procedentes de la Clasificación Internacional de Enfermedades décima revisión, y/o registros codificados por el CID-O con topografías C38 y C48; Registro de Cáncer de base poblacional de la Secretaría Municipal de Salud de Curitiba con los mismos códigos. También se presentaron, analizaron y adaptaron a la realidad brasileña el modelo, los cuestionarios y el software de registro de mesotelioma de Lombardía, en Italia. Se observó que, en el Integrador de Registro Hospitalario de Cáncer, se registraron 15 casos de mesotelioma. En el Registro Hospitalario de Cáncer del hospital universitario, fueron dos. En el hospital oncológico, 16. Los datos del Registro de Cáncer de Base Poblacional, a su vez, indicaron 317 registros relacionados con este período. A pesar de que algunos datos estaban más completos, existe una falta de datos relacionados con la historia laboral, imposibilitando establecer el nexo causal. Con el aumento del número de casos de mesotelioma previstos para las próximas décadas, y la atención a las demandas legales, la implantación de los registros se convierte en esencial para apoyar el conocimiento, el seguimiento, así como la determinación del nexo causal y las fuentes de contaminación específicas en el país.

Mesotelioma Peritoneal Maligno. Presentación de un caso / Malignant Peritoneal Mesothelioma. Case presentation

El mesotelioma es un tumor poco frecuente, sobretodo en localización peritoneal. Originado en las células mesoteliales de superficies serosas. Su etiología es desconocida, aunque en muchos casos se relaciona con exposición a asbestos. Su frecuencia va en aumento en los últimos años, tiene mayor incidencia en varones de edad media. Se presentó un paciente de 73 años diabético e hipertenso que llevaba 21 días con sensación de llenura, aumento de volumen del abdomen, decaimiento marcado, pérdida del apetito. En este período presentó una pérdida de peso corporal de 10 kilos. Por todo lo anterior se decidió su ingreso para estudio y tratamiento (AU).

The mesothelioma is a little frequent tumor, especially in peritoneal location, originated in the mesothelial cells of serous surfaces. Its etiology is unknown, although in many cases it is related with exposition to asbestos. Its frequency increases in the last years, showing higher incidence in medium-age male people. The case of a diabetic, hypertensive patient aged 73 years was presented. He was already 21 days feeling bloating, having increase of the abdominal volume, remarked weakness, appetite loss. In this period he had a body weight loss of 10 kg. For that all, his admission was decided for study and treatment (AU).

Mesothelioma Mortality Rate in Brazil, 1980 to 2010

Mesothelioma is a type of cancer whose incidence has been increasing worldwide, mainly as a resultof asbestos exposure. Brazil is still a major producer and consumer of that fiber. Objective: The aim of this paperis to describe the distribution of mesothelioma mortality rate in Brazil during the period of 1980-2010. Method:An ecologic study was carried out with a descriptive analysis. The records used came from the National System ofInformation on Mortality of DataSUS (Sistema Nacional de Informações sobre Mortalidade do DataSUS). Results:Found 3,718 deaths from mesothelioma; the majority of them (2,180) occurred in the Southeast of the country. Therewas a balance in the mortality rate between men and women showing a ratio of 1.12:1, and 80.7% of deaths occurredamong individuals within the age range of 50 years old and above. The standardized mortality rates by age increasedfrom 0.64 deaths per million population in 1980 to 1.18 deaths per million population in 2002. Conclusion: Mortalitystatistics for mesothelioma in Brazil are low; they don’t match the intensity of production and use of asbestos in ourcountry; and they don’t reflect the actual magnitude of the problem...

Malignant pleural mesothelioma forming a huge mediastinal mass and causing atrial fibrillation.

A patient with malignant pleural mesothelioma was admitted with atrial fibrillation. Chest computed tomography showed a huge mediastinal tumor adjacent to the heart. Autopsy revealed a 12 × 9.5 -cm mediastinal mass involving the right lung, which distorted and stretched the myocardial sleeve surrounding the right inferior pulmonary vein. This case demonstrates that advanced malignant pleural mesothelioma can cause atrial fibrillation, possibly by stimulating myocardium around a pulmonary vein.

Mesotelioma maligno: experiencia clínico-patológica de 247 casos / Malignant mesothelioma: clinical and pathological features from 247 cases

Objective: This study describes the frequency, occupational, clinical, and pathological features in a large cohort of cases of Malignant Mesothelioma (MM) from the National Institute of Respiratory Diseases (INER), in México. Methods: A retrospective and transversal study was carried out in medical records of patients diagnosed with MM between the years 1991 to 2007. Results: Of the 247 patients, 184 were male and 63 were female with an average age of 51-60 years. Dyspnea and chest pain were the presenting symptoms in most of the patients. Exposure to asbestos was referred only in 34 percent of cases but direct exposition only was documented in five of them. Clinical features of MM patients were similar in asbestos related and non-asbestos related malignant mesothelioma. Conclusion: Although a growing tendency is observed in, the number of cases with MM, in many of them was not possible to establish the source of asbestos exposure.

Objetivo: Este estudio describe la frecuencia, características patológicas, ocupación y exposición a asbesto en una cohorte grande de casos de mesotelioma maligno (MM) admitidos en el Instituto Nacional de Enfermedades Respiratorias (INER), en México. Método: Se llevó a cabo un estudio retrospectivo y transversal en los registros médicos de pacientes diagnosticados con MM entre los años 1991-2007. Resultados: De los 247pacientes, 184 fueron hombres y 63 fueron mujeres con un promedio de edad de 51 y 60 años. Disnea y dolor torácico fueron los principales síntomas observados. Exposición a fibras de asbesto fue referida sólo en 34 por ciento) de los casos, aunque una exposición directa sólo puedo ser documentada en cinco de ellos. Las características clínicas de los pacientes con MM fueron similares en aquellos con y sin exposición a asbesto reconocida. Conclusión: Aunque se observa una tendencia creciente en el número de casos con MM, en muchos de ellos no fue posible establecer una fuente de exposición a asbesto como la causa de contaminación para el desarrollo de la enfermedad.

Occupational Respiratory Cancer in Korea

Malignant mesothelioma and lung cancer are representative examples of occupational cancer. Lung cancer is the leading cause of cancer death, and the incidence of malignant mesothelioma is expected to increase sharply in the near future. Although information about lung carcinogen exposure is limited, it is estimated that the number of workers exposed to carcinogens has declined. The first official case of occupational cancer was malignant mesothelioma caused by asbestos exposure in the asbestos textile industry in 1992. Since then, compensation for occupational respiratory cancer has increased. The majority of compensated lung cancer was due to underlying pneumoconiosis. Other main causative agents of occupational lung cancer included asbestos, hexavalent chromium, and crystalline silica. Related jobs included welders, foundry workers, platers, plumbers, and vehicle maintenance workers. Compensated malignant mesotheliomas were associated with asbestos exposure. Epidemiologic studies conducted in Korea have indicated an elevated risk of lung cancer in pneumoconiosis patients, foundry workers, and asbestos textile workers. Occupational respiratory cancer has increased during the last 10 to 20 yr though carcinogen-exposed population has declined in the same period. More efforts to advance the systems for the investigation, prevention and management of occupational respiratory cancer are needed.

Environmental exposure to asbestos and the exposure-response relationship with mesothelioma

An epidemiological and environmental study was carried out in Shubra El-Kheima city, greater Cairo, of the exposure-response relationship between asbestos and malignant pleural mesothelioma. Radiological screening was done for 487 people occupationally exposed to asbestos, 2913 environmentally exposed to asbestos and a control group of 979 with no history of exposure. Pleural biopsy was done for suspicious cases. The airborne asbestos fibre concentrations were determined in all areas. There were 88 cases of mesothelioma diagnosed, 87 in the exposed group. The risk of mesothelioma was higher in the environmentally exposed group than other groups, and higher in females than males. The prevalence of mesothelioma increased with increased cumulative exposure to asbestos

Carcinogenicity of asbestos: convincing evidence, conflicting interests.

In spite of hard epidemiological and clinical evidence associating asbestos fibre with asbestosis and cancer, the issue is controversial and likely to remain so. The focus is now shifting to non-occupational exposure, differential risk to various asbestos fibre types and the relatively low level of carinogenicity of the chrysotile form. This creates further space for scientific debate and the opportunity to form a considered opinion. However, the situation may take a worrisome turn if some of these scientific inquiries are used by market forces to their advantage. A look at the history of corporate activities in asbestos-related research reveals a disturbing trend. Information that was made available, through legal interventions, clearly shows how for half a century the asbestos industry in collaboration with some academic leaders of occupational medicine successfully suppressed evidence against asbestos. In developing countries, extensive and aggressive marketing continues by chrysotile producers, mainly Canadian companies. There is renewed pressure on this part of the world since new use of asbestos has been almost completely discontinued in the developed countries as a result of public pressure and state prohibitions. In this scenario, relaxation of public health control over any form of asbestos should be opposed. It is extremely dangerous and scientifically untenable to say that chrysotile asbestos can be used without risk. It has been identified as a potent human carcinogen, and remains so. However, some restraint must be exercised while dealing with asbestos that has already been released into the environment. Disturbing it unnecessarily may cause more harm than good.

Mesothelioma evaluation of treatment adopted, control rate and morbidity

This is a retrospective study included all patients with malignant mesothelioma presented to NEMRCOK from 1993 - 1995, 38 patients were included. 20 patients were treated with combination chemotherapy, 13 patients were treated with mixed external beam radiation therapy, 4 patients received combined radiotherapy and chemotherapy and only one patient had palliative radical surgery. The over all median survival of all patients was 8.6 months. A multivariate analysis was done to identify the significant predictors influencing survival concluded that localized disease, epithelial pathology and female patients who = or < 50 years are significant predictors of survival. Treatment complication encountered in the study included; recurrent pleural effusion empyema, continuous chest pain, repeated chest infections, local recurrence following either needle aspiration or diagnostic biopsy. Reversible renal affection related to platinol use had been also included

Mesotelioma pleural maligno: experiencia del Instituto Nacional de Cancerología (1935-1954)

Introducción: El mesotelioma pleural maligno (MPM) es una neoplasia casi invariablemente fatal, relaciónada la gran mayoría de las veces con la exposición a asbesto. La frecuencia de aparición de MPM es creciente en el mundo entero y, en nuestro país su aumento es alarmante. Sin embargo, hay pocos estudios que describan la experiencia con esta entidad en nuestro medio. Objetivo: Presentar la experiencia del Instituto Nacional de Cancerología de Santafé de Bogotá en MPM. Diseño: estudio observacional descriptivo (serie de casos) Pacientes y Métodos: se revisaron los registros de pacientes con diagnóstico de MPM entre 1935 y 1994. Se escogieron 32 que tuvieron la información requerida. Las variables seleccionadas fueron analizadas estadísticamente por los métods de chi cuadrado, T de student, Kaplan-Meier, Log-Rank-Test y Cox. Resultados: Se diagnósticaron 32 pacientes con Mesotelioma Pleural Maligno. Veintidós (69 por ciento), consultaron en los últimos 6 años; fueron 24 hombres y 8 mujeres (relación 3:1), con edad promedio de 46,5 años (rango 6-76 años). El tiempo promedio de evolución de los síntomas fue de 8 meses (rango 1-72 meses). Se presentó disnea en 22 (69 por ciento) pacientes, dolor torácico en 21 (66 por ciento)y tos en 17 (53 por ciento). Todos presentaron alteraciones radiológicas: 27 derrames pleurales, 24 engrosamientos pleurales y 9 masas. Se definió, si hubo o no exposición a asbesto en 18 pacientes; 14 estuvieron expuestos (78 por ciento). La broncospía y citología del líquido pleural nunca confirmaron el diagnóstico. La biopsia pleural ciega detectó malignidad, pero sólo confirmó el diagnóstico en 2 de 21 pacientes (9,5 por ciento). Las biopsias por toracoscopia o cirugía, siempre permitieron el diagnóstico. Histológicamente fueron 16 epiteliales (51,6 por ciento) 8 mixtos (25.8 por ciento) y 7 sarcomatosos (22,6 por ciento); Veintiocho (90,3 por ciento) fueron difusos. Diez pacientes se consideraron en estado I (34,5 por ciento) y 14 en estado II (48,3 por ciento). Cirugía radical se realizó en 11, con una mortalidad operatoria de 2 (8 por ciento), y una morbilidad de 4 (16 por ciento). Radioterapia se administró a 11 pacientes y quimioterapia a 7. El tiempo libre de enfermedad promedio fue 37,9 meses (rango 1-137), el cual se disminuye a 14,1 meses si excluimos al paciente que duró 137 meses. este tiempo fue influido si la cirugía fue o no...

Mesotelioma pleural maligno difuso: una enfermedad letal / Malignant pleural diffuse mesothelioma: lethal disease

Se revisan los conceptos fundamentales sobre el mesotelioma pleural maligno difuso, cuyas implicaciones medico-quirurgicas son graves y su pronostico muy malo a corto plazo. Se enfatiza el hecho de las implicaciones laborales que el tumor conlleva, debido a que es considerado como enfermedad profesional, hoy en dia.