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O estudo avalia as alterações pleuro-pulmonares e mediastinais detectáveis pela tomografia computadorizada de alta resolução na paracoccidioidomicose com comprometimento pulmonar em momentos distintos da evolução da doença: na fase ativa previamente ao tratamento medicamentoso específico ou até 30 dias do seu início, e na fase inativa, a partir do 6° mês (em média, 11,53 meses após). Foram acompanhados 37 pacientes (de 32 a 68 anos) com envolvimento pulmonar crônico por, em média, 29,60 ± 11,21 meses. No total, foram analisadas 60 tomografias, 28 na fase ativa da doença e 32 na fase inativa, sendo que 23 pacientes realizaram exames nas duas fases e 14 somente em uma delas. Utilizaram-se cortes axiais de 2mm, com intervalo de 10mm, no sentido crânio-caudal, em cuja reconstituição usou-se algoritmo de alta freqüência espacial. Os cortes foram fotografados em duas janelas de densidades apropriadas ao estudo do pulmão, parênquima pulmonar e mediastino (120 V; 2 s; 80 a 130 mA). Os achados mais freqüentemente detectados na fase ativa da doença foram: 1) espessamento de septos interlobulares (96,43%); 2) nódulos (92,86%); 3) consolidação (71,43%); 4) enfisema (67,86%); 5) espessamento de paredes brônquicas (64,29% ); 6) distorção da arquitetura broncovascular (60,71% ); 7)espessamento pleural (57,14%); 8) bolha (46,42 %); 9) bronquiectasias (42,86%); 10) linfonodomegalias (39,29%); 11) cavidades (35,71 %); 12) opacidade em vidro despolido (32,14%); 13) retração pleural (32,14%); 14) tree-in-bud (17,86%); 15) faveolamento e alterações fibróticas (14,29%). Em nenhum caso identificou-se pneumotórax espontâneo e/ ou derrame pleural. Em relação aos achados detectados no exame feito após o tratamento, verificou-se tendência 1) em manter a mesma quantidade de nódulos, com dimensões semelhantes, à detectada na fase ativa, mas com contornos bem-definidos mais freqüentemente; 2) em manter a presença de consolidação, mas em menos áreas; 3) em reduzir a presença e extensão de espessamento de paredes brônquicas; 4) em reduzir a quantidade de cavidades, sem alteração no seu diâmetro; 5) em reduzir a quantidade de bronquiectasias; 6) em reduzir a presença de linfonodomegalias; 7) em reduzir a quantidade de áreas com opacidade em vidro despolido; 8) em manter múltiplas áreas com espessamento de septos interlobulares. Predominaram as alterações de distribuição difusa, nos campos médios, bilaterais, nas regiões posteriores. Em três pacientes detectou-se bola fúngica na tomografia, sendo que em um identificou-se A.fumigatus no material obtido através da punção pulmonar transcutânea. A tomografia permite uma avaliação objetiva do tipo, extensão, distribuição, intensidade, localização e tamanho das alterações pleuro-pulmonares na paracoccidioidomicose, mas não identifica um achado ou característica que possa ser utilizado como critério para definir .doença ativa ou inativa. O estudo não detectou, no que se refere às variáveis analisadas, diferença estatísticamente significante (P Fischer • 1,00) entre as proporções iniciais encontradas na fase ativa da doença quando comparadas com as finais (fase inativa).

Made available in DSpace on 2014-06-11T19:22:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2005Bitstream added on 2014-06-13T20:48:33Z : No. of bitstreams: 1 pinotti_kf_me_botfm.pdf: 691624 bytes, checksum: 91a24e4114a1154568a2a8f616cecf0b (MD5) / Fundação para o Desenvolvimento Médico e Hospitalar (Famesp) / A radiografia simples de tórax (RX) é um exame já consagrado, no derrame pleural parapneumônico (DPP), mas através dela não é possível determinar a viscosidade do líquido, presença de loculações ou encarceramento pulmonar, que podem ser avaliados pela ultrassonografia torácica (US). Avaliar prospectivamente a utilidade da US feita antes da drenagem em crianças internadas com DPP. Todas as crianças internadas com diagnóstico de DPP após RX deveriam passar pela US onde eram avaliadas: loculação pleural, ecogenicidade e quantidade de líquido estimada. Após punção era avaliado o aspecto, pH e bioquímicos do líquido pleural. Nos drenados era aferido o volume do líquido drenado para comparação com o volume estimado pela US. Os pacientes sem melhora clínica ou radiológica após drenagem eram encaminhados para procedimento cirúrgico maior. De agosto de 2001 a julho de 2003 foram avaliadas 52 crianças (31?, 21?) com idade de 5 meses a 13 anos, predominando a faixa etária menor que 2 anos. Destas, foi realizada US em 48, das quais 35 foram drenadas e 13 tratadas clinicamente. Dois dos drenados necessitaram de cirurgia maior. A US mostrou derrame livre em 38 e loculado em 10 casos. Dos livres foram drenados 25 (65,8%) e dos loculados 10 (100%). Quanto à ecogenicidade13 eram anecóicos, 18 espessos com septações e 17 espessos sem septações; foram drenados 6 anecóicos (46,15%), 15 espessos com septação (83,33%) e 14 espessos sem septação (82,35%). O volume de líquido estimado pela US variou de 20 a 860 ml. Quanto à ecogenicidade, o volume do líquido foi significativamente maior nos espessos com septação, e quanto à loculação foi significativamente maior nos loculados. Não houve diferença significante nos bioquímicos quando os grupos foram separados pela ecogenicidade, mas o pH e glicose pleurais foram significantemente menores e o DHL significativamente... / Utility of thoracic ultrasound in the management of parapneumonic effusions in children. Thoracic radiography, a well-known procedure in parapneumonic effusion (PPE), cannot evaluate fluid viscosity, the presence of loculations or trapped lung, all of which can be established by thoracic ultrasound (US). Prospectively evaluate the utility of US before pleural drainage in children with PPE. All children hospitalized for PPE, identified by thoracic radiography, underwent US to assess pleural loculation, echogenicity, and amount of pleural fluid. After thoracocentesis, the extracted fluid was examined for gross appearance and was submitted to biochemical analysis. Among patients who underwent pleural drainage, the amount of fluid obtained from the procedure was compared to the amount estimated by US. Patients without clinical or radiological improvement underwent a more significant surgical procedure. From August 2001 to July 2003, 52 children (31 male, 21 female) were examined. These children ranged in age from 5 months to 13 years with the majority under the age of two. An US was performed on 48 of these children, 35 of whom received chest tube drainage and 13 of whom only received clinical treatment. Two pleural drainage patients, required a more significant surgical procedure. US identified 38 patients with free-flowing pleural fluid and 10 with loculated pleural fluid. Twenty five of the patients (65.8%) with free-flowing pleural fluid and 10 (100%) with loculation received chest tube drainage. Among patients with echogenicity, 13 were anechoic, 17 echoic without septations and 18 echoic with septations; 6 anaechoic (46.15%), 14 echoic without septations (82.35%) and 15 echoic with septations (83.33%) required chest tube drainage. The amount of fluid estimated by US varied from 20 to 860 ml. The volume of fluid was higher among patients that were echoic with... (Complete abstract click electronic access below)

Η κακοήθης υπεζωκοτική συλλογή (ΚΥΣ), προκαλούμενη από μεταστατικά αδενοκαρκινώματα είτε από πρωτοπαθή μεσοθηλιώματα, αποτελεί μείζον κλινικό πρόβλημα καθώς σηματοδοτεί συστηματική νεοπλασματική διασπορά και χαμηλό προσδόκιμο επιβίωσης. Η τρέχουσα αντιμετώπισή της είναι μη αιτιολογική και συχνά αναποτελεσματική. Ενώ τα νεοπλάσματα που προκαλούν ΚΥΣ φέρουν καλά χαρακτηρισμένες μεταλλάξεις και ο υπεζωκότας θεωρείται προνομιακή ανατομική θέση γονιδιακής θεραπείας, οι μέχρι τώρα μελέτες της αποτελεσματικότητας της υπεζωκοτικής διαγονιδιακής μεταφοράς υπήρξαν αποσπασματικές. ΣΚΟΠΟΣ: Σκοπός της παρούσας μελέτης είναι ο χαρακτηρισμός της έκτασης, της αποτελεσματικότητας και της λειτουργικότητας της διαγονιδιακής μεταφοράς τόσο στο φυσιολογικό υπεζωκοτικό μεσοθήλιο, όσο και και στον πάσχοντα υπεζωκότα με πρωτοπαθείς ή μεταστατικούς όγκους. ΥΛΙΚΑ ΚΑΙ ΜΕΘΟΔΟΙ: Υγιείς ποντικοί φυσικού τύπου C57BL/6 και διαγονιδιακοί ποντικοί-ιχνηλάτες mT.mG έλαβαν ενδοϋπεζωκοτικές εγχύσεις 5 x 108 μολυσματικών μονάδων αδενοϊών τύπου 5 (Ad) που κωδικοποιούν τα γονίδια της λουσιφεράσης (Luc), της πράσινης φθορίζουσας πρωτεΐνης (GFP) και της Cre ρεκομπινάσης. Η αποτελεσματικότητα της διαγονιδιακής μεταφοράς μελετήθηκε με απεικόνιση βιοφωταύγειας/βιοφθορισμού, καθώς και με φθορίζουσα μικροσκοπία. Τα πειράματα επαναλήφθηκαν σε ποντικούς με ΚΥΣ, οι οποίες προκλήθηκαν μέσω υπεζωκοτικής έγχυσης 150.000 κυττάρων συγγενικού μεσοθηλιώματος υπεζωκότα (ΑΕ17) και αδενοκαρκινώματος πνεύμονα (LLC). Προκειμένου να μελετηθεί αν οι αδενοϊοί σε ποιο βαθμό μπορούν να διαμολύνουν κύτταρα in vitro , ανθρώπινες και ποντικίσιες κυτταρικές σειρές , φυσιολογικές και καρκινικές , διαμολύνθηκαν με 10ng/μl Ad-luc και Ad-GFP. AΠΟΤΕΛΕΣΜΑΤΑ: Η θωρακική φωτεινή εκπομπή ποντικών C57BL/6 κορυφώθηκε την πρώτη και υποχώρησε τη δεύτερη εβδομάδα μετά ενδοϋπεζωκοτική έγχυση Ad-Luc . Δύο εβδομάδες μετά από ενδοϋπεζωκοτική χορήγηση Ad-Cre σε ποντικούς mT.mG παρατηρήθηκε διάχυτη εξάλειψη του ερυθρού και εμφάνιση πράσινου φθορίζοντος σήματος σε όλες τις υπεζωκοτικές επιφάνειες, το οποίο εντοπιζόταν κατ’ αποκλειστικότητα στο μεσοθήλιο. Δύο εβδομάδες μετά από έγχυση Ad-Cre σε ποντικούς mT.mG που είχαν αναπτύξει όγκους παρατηρήθηκε πράσινος φθορισμός μαζί με τον κόκκκινο μέσα στους όγκους. Στατιστικώς σημαντική διαμόλυνση παρατηρήθηκε in vitro στα κύτταρα φυσιολογικού μεσοθηλίου, μεσοθηλιώματος ανθρώπου και ποντικού , αδενοκαρκινώματος πνεύμονα και παγκρέατος ποντικού. ΣΥΜΠΕΡΑΣΜΑΤΑ: Η ενδοϋπεζωκοτική έγχυση ανασυνδυασμένων αδενοιών αποτελεί αποτελεσματική μέθοδο διαγονιδιακής μεταφοράς στο φυσιολογικό και παθολογικό υπεζωκοτικό μεσοθήλιο. Ο βαθμός της διαγονιδιακής μεταφοράς επιβεβαιώνεται με τη διαμόλυνση φυσιολογικών και καρκινικών κυτταρικών σειρών in vitro. / --

Orientador: Antônio José Maria Cataneo / Resumo: A radiografia simples de tórax (RX) é um exame já consagrado, no derrame pleural parapneumônico (DPP), mas através dela não é possível determinar a viscosidade do líquido, presença de loculações ou encarceramento pulmonar, que podem ser avaliados pela ultrassonografia torácica (US). Avaliar prospectivamente a utilidade da US feita antes da drenagem em crianças internadas com DPP. Todas as crianças internadas com diagnóstico de DPP após RX deveriam passar pela US onde eram avaliadas: loculação pleural, ecogenicidade e quantidade de líquido estimada. Após punção era avaliado o aspecto, pH e bioquímicos do líquido pleural. Nos drenados era aferido o volume do líquido drenado para comparação com o volume estimado pela US. Os pacientes sem melhora clínica ou radiológica após drenagem eram encaminhados para procedimento cirúrgico maior. De agosto de 2001 a julho de 2003 foram avaliadas 52 crianças (31?, 21?) com idade de 5 meses a 13 anos, predominando a faixa etária menor que 2 anos. Destas, foi realizada US em 48, das quais 35 foram drenadas e 13 tratadas clinicamente. Dois dos drenados necessitaram de cirurgia maior. A US mostrou derrame livre em 38 e loculado em 10 casos. Dos livres foram drenados 25 (65,8%) e dos loculados 10 (100%). Quanto à ecogenicidade13 eram anecóicos, 18 espessos com septações e 17 espessos sem septações; foram drenados 6 anecóicos (46,15%), 15 espessos com septação (83,33%) e 14 espessos sem septação (82,35%). O volume de líquido estimado pela US variou de 20 a 860 ml. Quanto à ecogenicidade, o volume do líquido foi significativamente maior nos espessos com septação, e quanto à loculação foi significativamente maior nos loculados. Não houve diferença significante nos bioquímicos quando os grupos foram separados pela ecogenicidade, mas o pH e glicose pleurais foram significantemente menores e o DHL significativamente... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Utility of thoracic ultrasound in the management of parapneumonic effusions in children. Thoracic radiography, a well-known procedure in parapneumonic effusion (PPE), cannot evaluate fluid viscosity, the presence of loculations or "trapped lung", all of which can be established by thoracic ultrasound (US). Prospectively evaluate the utility of US before pleural drainage in children with PPE. All children hospitalized for PPE, identified by thoracic radiography, underwent US to assess pleural loculation, echogenicity, and amount of pleural fluid. After thoracocentesis, the extracted fluid was examined for gross appearance and was submitted to biochemical analysis. Among patients who underwent pleural drainage, the amount of fluid obtained from the procedure was compared to the amount estimated by US. Patients without clinical or radiological improvement underwent a more significant surgical procedure. From August 2001 to July 2003, 52 children (31 male, 21 female) were examined. These children ranged in age from 5 months to 13 years with the majority under the age of two. An US was performed on 48 of these children, 35 of whom received chest tube drainage and 13 of whom only received clinical treatment. Two pleural drainage patients, required a more significant surgical procedure. US identified 38 patients with free-flowing pleural fluid and 10 with loculated pleural fluid. Twenty five of the patients (65.8%) with free-flowing pleural fluid and 10 (100%) with loculation received chest tube drainage. Among patients with echogenicity, 13 were anechoic, 17 echoic without septations and 18 echoic with septations; 6 anaechoic (46.15%), 14 echoic without septations (82.35%) and 15 echoic with septations (83.33%) required chest tube drainage. The amount of fluid estimated by US varied from 20 to 860 ml. The volume of fluid was higher among patients that were echoic with... (Complete abstract click electronic access below) / Mestre

Made available in DSpace on 2016-04-20T12:33:54Z (GMT). No. of bitstreams: 2 51.pdf: 1382638 bytes, checksum: ff6fa2a28495066458e47509b7a3474b (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2015 / Contexto - O mesotelioma pleural maligno é um tipo de câncer raro, agressivo e com uma expectativa de aumento na incidência até 2030. As melhores formas de diagnosticar,estadiar e tratar essa neoplasia continuam em debate. Objetivos - Estabelecer a evidência de eficácia e segurança dos diferentes esquemas quimioterápicos disponíveis para o tratamento do mesotelioma pleural maligno.Fontes de Dados - As bases bibliográficas utilizadas para a busca de artigos indexados foram Cochrane Controlled Trials Register, Lilacs, Medline (via Pubmed), Scopus e Webof Science. Além disso, foram buscados estudos na literatura cinzenta.Critérios de Elegibilidade Participantes: pacientes com mesotelioma pleural maligno virgens de tratamento quimioterápico; Intervenção: tratamento quimioterápico; Controle:tratamento quimioterápico ou controle ativo de sintomas; Desfechos: Tempo de sobrevida,tempo livre de progressão, resposta tumoral e toxicidade; Estudos: ensaios clínicos randomizados de fase II ou III.Resultados - Um total de nove estudos envolvendo treze esquemas terapêuticos preencheram os critérios para inclusão nesta revisão. Em relação à eficácia, o único esquema quimioterápico que se apresenta superior ao seu comparador com significância estatística nos três desfechos é cisplatina mais pemetrexede. Os outros esquemas que demonstraram superioridade, mas sem a significância estatística foram: cisplatina mais raltitrexede, vinorelbina e carboplatina mais pemetrexede. Em relação à toxicidade, cisplatinamais pemetrexede, cisplatina mais raltitrexede se destacaram negativamente. / Conclusões O uso da combinação derivado de platina mais antifolato como opção de primeira escolha no tratamento quimioterápico do mesotelioma pleural maligno está de acordo com as diretrizes terapêuticas e outras revisões sistemáticas publicadas. Cisplatina epemetrexede têm a preferência sobre carboplatina e raltitrexede. Avaliações econômicas e estudos clínicos realizados no Brasil são necessários para embasar a decisão de incorporação dos antifolatos no tratamento rotineiro dessa neoplasia. / Background - Malignant pleural mesothelioma is a rare and aggressive cancer with anexpected increase in the incidence by 2030. The best ways to diagnose, staging and treat this disease still under discussion.Objectives - To establish the evidence of efficacy and safety of different chemotherapy regimens available for the treatment of malignant pleural mesothelioma. Data Sources - The bibliographic databases used for the search of indexed articles were Cochrane Controlled Trials Register, Lilacs, Medline (via Pubmed), Scopus and Web of Science. In addition, studies were sought in the gray literature. Study Eligibility Criteria - Participants: chemotherapy naïve patients with malignant pleural mesothelioma; Intervention: chemotherapy; Control: chemotherapy or active symptom control; Outcomes: survival time, progression-free time, tumor response and toxicity; Studies: phase II or III randomized clinical trials. Data Synthesis - A total of nine studies involving thirteen regimens met the criteria for inclusion in this review. Regarding efficacy, the only chemotherapy regimen that appears superior to their control group with statistical significance in the three outcomes is cisplatinplus pemetrexed. The other schemes that have shown superiority but without statistical significance were: cisplatin plus raltitrexed, vinorelbine and carboplatin plus pemetrexed. Regarding toxicity, cisplatin plus pemetrexed, cisplatin plus raltitrexed stood out negatively. Conclusions - The use of platinum more antifolate combination as first line chemotherapy ofmalignant pleural mesothelioma is in accordance with therapeutic guidelines and other systematic reviews published. Cisplatin and pemetrexed have preference over carboplatinand raltitrexed. Economic evaluations and a clinical study in Brazil are required to give foundation incorporating decision of antifolates in the routine treatment of this cancer. (AU)^ien

In our republic, occupational exposure to asbestos has been restricted to jobs concerned with disposal of products, materials and buildings containing asbestos, and research work studying asbestos fibres. The reason consists in health risks as all kinds of asbestos belong to high-risk carcinogens. The asbestos fibre related diseases should be reported. All data connected are kept in the National Institute of Public Health (NIPH) in Prague. The purpose of this study was to find out how much people are aware of the risks related to asbestos and find people who suffered from asbestos dust-induced disease, i.e. mesothelioma of pleura. The quantitative method was used to summarise information on asbestos-induced disease occurence in 1970-2010 available in the National Institute of Public Health in Prague. Along with that, the work maps the population awareness of asbestos risks. The thesis itself can be divided into two parts. The first one contains information based on data collection while the other part deals with data of NIPH in Prague. Two hypotheses were predicted: Hypothesis H1: People are aware of the material containing asbestos. Hypothesis H2: People are aware of negative impact of asbestos on human health. Both hypotheses were proved. Three hypotheses were suggested in the other part: Hypothesis H3: Latency, the time between first exposure to manifestation of disease, is never less than 20 years. Hypothesis H4: Incidence of mesothelioma of pleura and peritoneum is higher in people aged 60-69. Hypothesis H5: Smoking affects the course of the disease negatively. Hypotheses H3 and H4 were proved. Hypothesis H5 cannot be neither proved or disproved. Although the number of smokers among mesothelioma patients was higher, there is no evidence of negative effect of smoking on the disease. To prove this hypothesis, the data colllection should be larger. Findings of the study proved the time of exposure to asbestos fibres does not affect the occurence of this disease. The findings can be used in further research studies.

Background. Immunohistochemistry is a useful method in the differential diagnosis between pleural mesotheliomas and metastatic adenocarcinomas in the pleura. Cytokeratin 20 and 7 have been used successfully as markers in studies determining primary location of adenocarcinomas from metastases. The current study is a complementary research of archived paraffininbedded material of cases with cancer origin. This study contributes a bigger statistical material that may facilitate the search for unknown primary site of adenocarcinoma by identification of metastatic cells in the pleura. Methods. Cells from the pleura taken from fifteen patients with diagnosed cancer of different types and eleven patients with cancer of unknown origin, were stained with antibodies against the tumour markers: Ber EP 4, calretinin, cytokeratin 20 and 7, estrogen receptor α, thyroid transcription factor, prostate-specific antigen and Cdx2.The staining was conducted in an automated immunohistochemical system. The staining of each kind of antibody was confirmed by a control section staining. Results. All control staining ended perfect The whole panel of antibodies used on mammary cancer showed the same pattern for every antibody. Of the patients with cancer of unknown origin there were four that gave the same pattern, two men and two women. The women are deceased. To make a more careful evaluation more information and clinic background is needed. The number of samples is too small to draw any statistical conclusions. Comment. Although the control staining was perfect the negative result of CK20 in the cases of diagnosed colon cancer was unexpected. This staining should be performed again to confirm the result. In some cases the number of cells were to few for a certain evaluation. The slides and the results of this work will be archived for further research.

Le mésothéliome est une tumeur maligne rare des séreuses, au pronostic sombre, dont le facteur de risque principal connu est l’exposition à l’amiante. Il se déclare avec un temps de latence d’environ 30 ans après le début de l’exposition, atteint principalement la plèvre et touche majoritairement les hommes. L’analyse de cette pathologie, reconnue comme une maladie professionnelle et pour laquelle une Déclaration Obligatoire de maladie a été instituée en janvier 2012, s’est focalisée jusqu’alors essentiellement sur l’homme, tant sur le plan épidémiologique que sur le plan biologique. Il apparaît pourtant dans la littérature internationale des différences notables par sexe.Ces constations posent la question d’investiguer d’autres facteurs de risque, en particulier l’hypothèse d’une prédisposition génétique, les mécanismes biologiques intervenant dans les voies de la carcinogenèse du mésothéliome étant partiellement connus. Ceci incite à étudier les facteurs épidémiologiques, cliniques, biologiques et immunohistochimiques, prédisposant chez la femme au développement du mésothéliome pleural et péritonéal, et d’évaluer leurs impacts pronostiques, à partir des cas diagnostiqués entre 1998 et 2013, issus de la plus importante base de données française. Elle incite également à établir un état des lieux épidémiologique actualisé par sexe en France pour le mésothéliome pleural et péritonéal ; ces données étant inexistantes pour la France pour le péritoine. / Mesothelioma is a rare malignant serous tumor with a poor prognosis of which asbestos exposure is the major known risk factor. It occurs with a latent period about 30 years after exposure, reaches mainly the pleura and affects mainly the men. The study of this pathology, recognized as an occupationnal disease and for which a Mandatory Declaration of Disease was introduced in January 2012, focused until then mainly on men, both epidemiologically and biologically. However, there are significant gender differences in the international literature.These results raise the question of investigating other risk factors, in particular the hypothesis of genetic predisposition, the biological mechanisms involved in mesothelioma carcinogenesis pathways being partially known. This encourages the study of epidemiological, clinical, biological and immunohistochemical factors predisposing women to the development of pleural and peritoneal mesothelioma, and to evaluate their prognostic impacts, based on cases diagnosed between 1980 and 2015, from the largest French database. It also encourages the establishment of an updated epidemiological inventory by gender in France for pleural and peritoneal mesothelioma; these data are non-existent for peritoneum.

Publicación a texto completo no autorizada por el autor / Determina el punto de corte de la adenosina deaminasa en el diagnóstico de tuberculosis pleural en el Hospital Nacional Dos de Mayo. El estudio es de tipo retrospectivo de precisión diagnóstica, en el que se examinan las historias clínicas de los pacientes con determinación de ADA en líquido pleural y diagnóstico confirmatorio de la etiología de la efusión pleural, durante su hospitalización en el Hospital Nacional Dos de Mayo en el 2015. A través de la curva ROC, se establece el mejor punto de corte para obtener los mejores parámetros de sensibilidad, especificidad, valores predictivos positivo y negativo (VPP y VPN) y los cocientes de verosimilitud positivo y negativo (CVP y CVN). Como resultados se observa que 83 sujetos que se incluyeron en el estudio. El 50,6 % fueron mujeres y la media de la edad fue de 43,0 ± 21,7 años. La TP presenta el 48%, seguido de las neoplasias (17%) y derrame paraneumónico (16%). El mejor punto de corte calculado fue de 28.08 UI/L, con una sensibilidad de 90%, especificidad de 88%, VPP de 87%, VPN de 90%, CVP de 7,5 y CVN de 0,11. Se concluye que el mejor punto de corte de la ADA en líquido pleural es de 28.08 UI/L para el diagnóstico de TP, con una sensibilidad de 90% y especificidad de 88%, en el Hospital Nacional Dos de Mayo durante el año 2015. / Tesis