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INTRODUCTION: In women, most malignant effusions are from breast and ovary primary carcinomas that have metastasized to body cavity fluids (pleural, peritoneal and pericardial). When carcinoma is diagnosed in effusions, it is not possible to identify its site of origin solely by cytology (morphology); therefore, immunocytochemistry is used as a complementary method. There are no immunocytochemical markers with 100% sensitivity and specificity for identifying carcinoma primary site. The markers most used are TTF-1 for the lung, GATA-3 for the breast, and PAX-8 for the ovary. The aim of this study was to evaluate the sensitivity and specificity of a panel including these markers for detecting the primary site of carcinoma in effusions. METHODS: Samples of pleural, pericardial, and peritoneal effusions and peritoneal washings with carcinoma of known primary site from women (n = 60) and men (n = 18) were prepared by using the cell block method, and immunocytochemistry was performed to evaluate the expression of primary site markers (TTF-1, PAX-8, and GATA-3). RESULTS: In women, the breast was the most frequent primary site of metastatic carcinoma to both pleural and pericardial cavities, followed by the lung, whereas the ovary was the most frequent primary site of carcinoma within peritoneal effusions and washings, followed by the gastrointestinal tract (stomach or intestine). The expected profiles for carcinomas of the most common primary sites were: breast (GATA-3 (+), PAX-8 (-), TTF-1 (-)), ovary (PAX-8 (+), GATA-3 (-), TTF-1 (-)), lung (TTF-1 (+), PAX-8 (-) GATA-3 (-)) and gastrointestinal tract (PAX-8 (-), GATA-3 (-), TTF-1 (-)). These were observed in 88.23% (45/51) of women's samples with carcinoma from these primary sites. By using TTF-1 as the sole primary site marker, 6.25% of carcinomas of primary site other than the lung would have been misdiagnosed. CONCLUSION: An initial panel of markers including GATA-3, PAX-8, and TTF-1 allows, with high sensitivity and specificity, the identification or exclusion of frequent primary sites of carcinoma in effusions from women. Our results highlight the importance of using a panel of markers to avoid misidentification of the primary site of tumor.

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BACKGROUND: Chronic hepatic disease is associated with osteoporosis, osteopenia or osteomalacia. Osteoporosis and fractures due to bone fragility present high prevalences and are more frequent in patients with liver cirrhosis than in the general population. The search for a diagnosis of osteopenia and osteoporosis in this population may allow early intervention and modify unfavorable outcomes. OBJECTIVE: To know the prevalence of osteopenia or osteoporosis and of fracture due to bone fragility in individuals with liver cirrhosis, the associated risk factors, and its compromise in their quality of life (QoL). METHODS: Observational, transversal study performed with 71 liver cirrhosis patients of the Hepatology Service of the Hospital de Base do Distrito Federal, Brasília, DF, Brazil, between July 2017 and December 2018. The patients were submitted to bone densitometry (DXA) of the lumbar spine and of the femoral neck, to x-ray of the lumbosacral spine and to the Chronic Liver Disease Questionnaire (CLDQ) for the evaluation of quality of life (QoL). The Fracture Risk Assessment (FRAX) major was calculated for patients >50 years old. The analyses were performed for the evaluation of the risk factors associated with lumbosacral spine fracture. RESULTS: The majority (62%) of the 71 evaluated patients was diagnosed with osteoporosis or osteopenia on DXA. Of the 44 patients with osteopenia or osteoporosis, 52.3% were female, with a mean age of 62.6±9.51 years old, with the majority (72.7%) being Child A, cirrhotics of alcoholic etiology (36.4%), and with an intermediate QoL according to the CLDQ (3.3). Regarding the patients with lumbosacral spine fracture, the mean age was 61.6±11.1 years old, 60% were female, most of them Child A (66.7%), of alcoholic etiology (46.7%), and with an intermediary QoL according to the CLDQ (3.5). The presence of osteopenia and/or osteoporosis was associated with lumbosacral fracture (P<0.001), without correlation with the other analyzed variables: age, body mass index, gender, presence and absence of ascites, Child-Pugh classification, vitamin D, calcium, and phosphorus serum concentration, cirrhosis etiology and FRAX major. CONCLUSION: The prevalence of hepatic osteodystrophy was high, and the occurrence of lumbosacral spine fracture was more associated with osteoporosis and/or osteopenia among the cirrhotic patients studied. The QoL was intermediate and with no differences between cirrhotics with and without fracture.

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ABSTRACT Background Chronic hepatic disease is associated with osteoporosis, osteopenia or osteomalacia. Osteoporosis and fractures due to bone fragility present high prevalences and are more frequent in patients with liver cirrhosis than in the general population. The search for a diagnosis of osteopenia and osteoporosis in this population may allow early intervention and modify unfavorable outcomes. Objective To know the prevalence of osteopenia or osteoporosis and of fracture due to bone fragility in individuals with liver cirrhosis, the associated risk factors, and its compromise in their quality of life (QoL). Methods Observational, transversal study performed with 71 liver cirrhosis patients of the Hepatology Service of the Hospital de Base do Distrito Federal, Brasília, DF, Brazil, between July 2017 and December 2018. The patients were submitted to bone densitometry (DXA) of the lumbar spine and of the femoral neck, to x-ray of the lumbosacral spine and to the Chronic Liver Disease Questionnaire (CLDQ) for the evaluation of quality of life (QoL). The Fracture Risk Assessment (FRAX) major was calculated for patients >50 years old. The analyses were performed for the evaluation of the risk factors associated with lumbosacral spine fracture. Results The majority (62%) of the 71 evaluated patients was diagnosed with osteoporosis or osteopenia on DXA. Of the 44 patients with osteopenia or osteoporosis, 52.3% were female, with a mean age of 62.6±9.51 years old, with the majority (72.7%) being Child A, cirrhotics of alcoholic etiology (36.4%), and with an intermediate QoL according to the CLDQ (3.3). Regarding the patients with lumbosacral spine fracture, the mean age was 61.6±11.1 years old, 60% were female, most of them Child A (66.7%), of alcoholic etiology (46.7%), and with an intermediary QoL according to the CLDQ (3.5). The presence of osteopenia and/or osteoporosis was associated with lumbosacral fracture (P<0.001), without correlation with the other analyzed variables: age, body mass index, gender, presence and absence of ascites, Child-Pugh classification, vitamin D, calcium, and phosphorus serum concentration, cirrhosis etiology and FRAX major. Conclusion The prevalence of hepatic osteodystrophy was high, and the occurrence of lumbosacral spine fracture was more associated with osteoporosis and/or osteopenia among the cirrhotic patients studied. The QoL was intermediate and with no differences between cirrhotics with and without fracture.

RESUMO Contexto A doença hepática crônica associa-se com osteoporose, osteopenia ou osteomalácia. A osteoporose e as fraturas por fragilidade óssea têm altas prevalências e são mais frequentes em pacientes com cirrose hepática do que na população geral. A busca por osteopenia e osteoporose nesta população pode permitir a intervenção precoce e modificar os desfechos desfavoráveis. Objetivo Conhecer a prevalência de osteopenia ou osteoporose e de fraturas por fragilidade óssea em portadores de cirrose hepática, fatores de risco associados e seu comprometimento na qualidade de vida. Métodos Estudo observacional e transversal realizado com 71 pacientes portadores de cirrose hepática do Serviço de Hepatologia do Hospital de Base do Distrito Federal, Brasília, DF, Brasil, no período de julho de 2017 a dezembro de 2018. Os pacientes foram submetidos à densitometria óssea de coluna lombar e colo de fêmur, raio-x de coluna lombo sacra e ao questionário Chronic Liver Disease Questionnaire (CLDQ, na sigla em inglês) para avaliação de qualidade de vida. Foi calculado o escore de Fracture Risk Assessment Tool "FRAX Maior" nos pacientes >50 anos. As análises foram realizadas para a avaliação dos fatores de risco associados à fratura de coluna lombo sacra. Resultados Dos 71 pacientes avaliados, a maioria (62%) foi diagnosticada com osteoporose ou osteopenia à densitometria. Dos 44 portadores de osteopenia ou osteoporose, 52,3% eram do sexo feminino, com idade média de 62,6±9,51 anos, sendo a maioria (72,7%) Child A, cirróticos de etiologia alcoólica (36,4%) e com qualidade de vida intermediária ao CLDQ (3,3). Dos pacientes com fratura de coluna lombo sacra, a média de idade foi de 61,6±11,1 anos, 60% eram do sexo feminino, a maioria Child A (66,7%), de etiologia alcoólica (46,7%), e apresentaram qualidade de vida intermediária ao CLDQ (3,5). A presença de osteopenia e/ou osteoporose esteve associada à fratura lombo sacra (P<0,001), sem correlação com as demais variáveis analisadas: idade, índice de massa corporal (IMC), gênero, presença e ausência de ascite, classificação de Child-Pugh, concentrações séricas de vitamina D, cálcio e fósforo, etiologia da cirrose e "FRAX maior". Conclusão A prevalência de osteodistrofia hepática foi elevada, e a ocorrência de fratura de coluna lombo sacra esteve mais associada à osteoporose e/ou osteopenia entre cirróticos estudados. A qualidade de vida se mostrou intermediária e sem diferença entre cirróticos com e sem fratura.

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OBJECTIVE: Hepatopulmonary Syndrome (HPS) is a complication of cirrhosis that worsens the disease's prognosis, pre and post liver transplant. The objective of this study is to analyze the prevalence of HPS in cirrhotic patients at our service and to correlate it with oxygen saturation (SatO2) using a pulse oximeter to evaluate if this is useful as a screening test for HPS. A prospective study was conducted in patients with hepatic cirrhosis conventionally selected from 2014 to 2016. All the patients underwent an echocardiogram with microbubbles and oxygen saturation measurement by pulse oximetry. Those with intrapulmonary shunt were submitted to arterial blood gas analysis. The relationship between oxygen saturation and HPS was assessed by the multivariate model of binary logistic regression. We analyzed 77 patients, and 23.3% (18 patients) had all criteria for HPS. The relationship between HPS and SatO2 did not show statistical significance, even after the variables were adjusted for sex, age, and smoking. Oxygen saturation alone was not able to detect HPS in the sample of cirrhotic patients. More accurate methods for screening and diagnosis of the syndrome should be used.

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SUMMARY Hepatopulmonary Syndrome (HPS) is a complication of cirrhosis that worsens the disease's prognosis, pre and post liver transplant. The objective of this study is to analyze the prevalence of HPS in cirrhotic patients at our service and to correlate it with oxygen saturation (SatO2) using a pulse oximeter to evaluate if this is useful as a screening test for HPS. A prospective study was conducted in patients with hepatic cirrhosis conventionally selected from 2014 to 2016. All the patients underwent an echocardiogram with microbubbles and oxygen saturation measurement by pulse oximetry. Those with intrapulmonary shunt were submitted to arterial blood gas analysis. The relationship between oxygen saturation and HPS was assessed by the multivariate model of binary logistic regression. We analyzed 77 patients, and 23.3% (18 patients) had all criteria for HPS. The relationship between HPS and SatO2 did not show statistical significance, even after the variables were adjusted for sex, age, and smoking. Oxygen saturation alone was not able to detect HPS in the sample of cirrhotic patients. More accurate methods for screening and diagnosis of the syndrome should be used.

RESUMO A Síndrome Hepatopulmonar (SHP) é uma complicação da cirrose que piora o prognóstico da doença pré e pós-transplante hepático. O objetivo do trabalho é analisar a prevalência de SHP em pacientes cirróticos de nosso serviço e correlacioná-la com a saturação de oxigênio (SatO2) pelo oxímetro de pulso, e avaliar se este seria útil como um exame de triagem no diagnóstico de SHP. Foi realizado um estudo prospectivo em pacientes portadores de cirrose hepática no período de 2014 a 2016. Todos os pacientes foram submetidos a um ecocardiogama com microbolhas e a saturação de oxigênio pela oximetria de pulso. Aqueles com shunt intrapulmonar foram submetidos a gasometria arterial. A relação entre a saturação de oxigênio e SHP foi avaliada pelo modelo multivariado de regressão logística binário. Foram analisados 77 pacientes, destes 23,3% (18 pacientes) apresentaram todos os critérios para SHP. A relação entre a SHP com a SatO2 não obteve significância estatística, mesmo após as variáveis terem sido ajustadas pelo sexo, idade e tabagismo atual ou passado. A saturação de oxigênio, de forma isolada, não foi capaz de distinguir a SHP na amostra de pacientes cirróticos em nosso estudo. Deve-se utilizar métodos mais acurados para a triagem e diagnóstico dessa síndrome.

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Liver and biliary tract diseases are common causes of morbidity and mortality worldwide. Invasive procedures are usually performed in those patients with hepatobiliary diseases for both diagnostic and therapeutic purposes. Defining proper indications and restraints of commonly used techniques is crucial for proper patient selection, maximizing positive results and limiting complications. In 2018, the Brazilian Society of Hepato-logy (SBH) in cooperation with the Brazilian Society of Interventional Radiology and Endovascular surgery (SOBRICE) and the Brazilian Society of Digestive Endoscopy (SOBED) sponsored a joint single-topic meeting on invasive procedures in patients with hepatobiliary diseases. This paper summarizes the proceedings of the aforementioned meeting. It is intended to guide clinicians, gastroenterologists, hepatologists, radiologists, and endoscopists for the proper use of invasive procedures for management of patients with hepatobiliary diseases.

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The aim of the present study was to identify cell types in primary culture from malignant and non-malignant effusions. Effusion samples were subjected to cytology and culture. Immunocytochemistry was performed in cytological slides to evaluate malignancy (positivity for malignancy markers) and in culture slides for identification of cell types in growth. A total of 143 effusion samples (pleural n=76; peritoneal n=37; pericardial n=4; and peritoneal lavage n=26) were analyzed. Cell growth was observed in 34.9% of all samples and immunocytochemistry for identification of cell types in culture slides was conclusive in 90% of them. In non-malignant samples (n=28), growth of mesothelial cells, macrophages and of both cell types was identified in 82.14, 10.71 and 7.14%, respectively. In malignant samples (n=17, all carcinomas), growth of malignant epithelial cells and of both malignant epithelial and mesothelial cells was identified in 41.17 and 23.52%, respectively. In the remaining 35.29% of malignant samples, the only cells in growth were mesothelial and/or macrophages instead of malignant epithelial cells. In conclusion, in culture of malignant effusions, mesothelial cells may be simultaneously identified with malignant epithelial cells. Besides, mesothelial cells and macrophages may be the only cells identified in malignant effusion culture. Therefore, a broad panel of cell markers should be used for unmistakable identification of cells in studies of effusion primary culture. The ideal malignant effusion sample to obtain culture of neoplastic cells should be that without the presence of mesothelial cells and macrophages.

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Realizar uma revisão da literatura sobre a aplicação dométodo “plasma-tromboplastina/trombina” no preparo de “cell block”de amostras citológicas para pesquisa de câncer no laboratório deAnatomia Patológica. Material e Métodos. Para a elaboração do estudoforam realizadas buscas na base de dados PubMed, SciELO e LILACSutilizando os descritores “Cell block effusion”, “Cell block preparation”e “Cell block method”. Resultados: O método “plasma-tromboplastina/trombina” tem sido descrito no preparo de diferentes tipos de amostrascitológicas: efusões (líquidos das cavidades pleural, peritoneal,pericárdica), lavado peritoneal, aspirados e amostras em meio líquido.A descrição da técnica não foi realizada em alguns estudos ou foirealizada apenas parcialmente e com variações entre eles com relaçãoà velocidade e tempo de centrifugação, quantidades de plasma,trombina e tromboplastina. Os estudos que comparam o método“plasma-tromboplastina/trombina” com outros métodos de preparo do“cell block”, usando diferentes tipos de amostra, são escassos, emuitas vezes, com pequeno número de amostras e isto dificulta umaconclusão definitiva sobre suas vantagens sobre outras técnicas. Osmétodos mais usados no preparo do “cell block” são os que utilizamágar e plasma-tromboplastina/trombina. As vantagens do “métodoplasma-tromboplastina” em relação aos outros métodos são execuçãofácil, baixo custo, ausência de artefatos celulares relacionados aoaquecimento, melhor celularidade, melhor distribuição celular emelhores resultados da imunocitoquímica. Conclusão: O “cell block”preparado pelo método “plasma-tromboplastina/trombina” pode serconsiderado uma ferramenta diagnóstica complementar aocitocentrifugado e aplicável na rotina de laboratórios de AnatomiaPatológica públicos e privados para a pesquisa de câncer...

To perform a literature review on the application of the“plasma-thromboplastin/thrombin” method for cell block preparationof cytological samples in cancer research in pathological anatomylaboratories. Material and Methods: Bibliographical searches werecarried out in the databases PubMed, SciELO and LILACS using thedescriptors “cell block effusion”, “cell block preparation” and “cellblock method”. Results: The “plasma-thromboplastin/thrombin” methodhas been described for preparation of different types of cytologicalsamples, including effusions (liquids from the pleural, peritoneal andpericardial cavities), peritoneal lavage, aspirated samples, and samplesin liquid medium. The description of the technique was not reported insome studies or was performed just partially. Variations in the studieswere found with regard to centrifugation time and speed, as well as toquantity of plasma, thrombin and thromboplastin used. Only a fewstudies have compared the “plasma-thromboplastin/thrombin method”with other cell block preparation methods using different types ofsamples. The studies have frequently included a small sample size,which makes it difficult to establish a solid conclusion on theadvantages of this method over other approaches. The most commonlyused methods for cell block preparation include those using agar andthromboplastin/thrombin. The advantages of the “plasma/thromboplastin” method in relation to other methods are easiness toimplement, low cost, no cell artifacts related to heating, bettercellularity, better cellular distribution and better immunocytochemistryresults. Conclusion: Cell block preparation using the plasmathromboplastin/thrombin method can be considered a diagnostic tooladjunctive to the cytocentrifuged one that is applicable to the routineof public and private pathological anatomy laboratories for cancerresearch...

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BACKGROUND: The aim of this study was to evaluate the expression of IMP3, an independent poor prognostic factor for many cancers, and its association with clinicopathological features and HER2 status. METHODS: Gastrectomy specimens from 106 patients were evaluated by immunohistochemistry and fluorescence in situ hybridization. RESULTS: HER2 overexpression was found in 4.71 % of the samples. A negative association was observed between HER2 overexpression and grade of differentiation. No association was observed between HER2 overexpression and status of surgical margins, vascular invasion, perineural invasion, nodal metastasis and depth of invasion. Among all specimens of gastric cancer, 67.92 % were positive for IMP3. Expression of IMP3 was significantly higher in specimens with vascular invasion, perineural invasion, nodal metastasis and higher depth of invasion. HER2 overexpression was detected in only 5.55 % of IMP3 positive specimens. CONCLUSIONS: IMP3 expression was frequently observed in gastric cancer and was associated with poor prognostic clinicopathological features. A survival benefit with HER2 therapy should be expected for the minority of patients with IMP3 positive specimens. Studies should be conducted to evaluate the response to HER2 therapy of gastric cancer expressing IMP3.

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Esôfago negro, também descrito como necrose esofágica aguda, é definido pelo aspecto enegrecido do esôfago observado à endoscopia digestiva alta. A condição é rara, está presente em pacientes gravemente comprometidos, e habitualmente se manifesta por hemorragia digestiva alta. Os principais fatores de risco envolvidos incluem doença cardiovascular, diabetes mellitus, desnutrição, cirrose hepática e insuficiência renal. Apresenta alta morbidade e mortalidade. Relatamos dois casos de esôfago negro associados à cirrose hepática.

Black esophagus, also described as acute esophageal necrosis is defined by blackish aspect of the esophagus seen at endoscopy. The condition is rare, is present in patients severely compromised, and usually manifests as upper gastrointestinal bleeding. The main risk factors involved include cardiovascular disease, diabetes mellitus, malnutrition, liver cirrhosis, e renal failure. It has high morbidity and mortality. We describe two cases of black esophagus associated with liver cirrhosis.

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As complicações classificadas como maiores incluem o sepultamento do retentor interno (SRI). A gastrostomia percutânea endoscópica foi introduzida na prática clínica como via alternativa de alimentação enteral. A frequência de complicações varia de 1,0% a 10,0% e a mortalidade de 0,3% a 1,0%. O sepultamento do retentor interno da gastrostomia é tida como complicação maior, e decorre da tração efetiva da sonda de gastrostomia ou pelo emprego de button com extensão inferior à espessura da parede abdominal. Ocorre isquemia da mucosa gástrica e progressiva intrusão da parede do órgão, e posterior crescimento da mucosa gástrica, com oclusão do lúmen da sonda ou button.

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BACKGROUND AND AIM: The durability of the sustained virologic response (SVR) in patients with chronic hepatitis C after treatment and the ideal follow-up time for these patients remains undefined. The objective of the study was to evaluate the durability of the virologic response in patients with chronic hepatitis C followed up for at least 12 months after SVR at HCFMRP-USP. METHODS: The study was conducted on 174 patients with chronic hepatitis C treated with different antiviral regimens who had achieved SVR. Qualitative serum HCV-RNA was determined by the commercial kit (COBAS AMPLICOR HCV, v2.0). RESULTS: There was predominance of male (73%) with a mean age of 45.6 ± 10 years. Liver cirrhosis was present in 16.1% of the study subjects. Mean follow-up time after SVR was 47 months (12-156 months). Twenty-two patients received monotherapy with interferon; 94 received interferon plus ribavirin, and 58 received pegylated interferon plus ribavirin. A total of 134 patients (77.0%) received one treatment course, 29 (16.7%) received two courses, and 11 (6.3%) received three courses. The distribution of HCV genotypes was: genotype 1 (40.2%), genotype 3 (40.8%) and genotype 2 (10.3%). Genotype was undetermined in 8.7% of cases. None of the 174 patients had recurrence of HCV infection. Two cirrhotic patients developed hepatocellular carcinoma (HCC) during follow-up. CONCLUSIONS: Among patients with SVR there was no recurrence of HCV infection or evidence of liver disease progression in any patient followed up for a mean of 47 months after SVR, except for patients with advanced hepatic disease before treatment, who may develop HCC despite SVR. Therefore, one can assume that SVR is associated with long term good prognosis.

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BACKGROUND AND AIM: The durability of the sustained virologic response (SVR) in patients with chronic hepatitis C after treatment and the ideal follow-up time for these patients remains undefined. The objective of the study was to evaluate the durability of the virologic response in patients with chronic hepatitis C followed up for at least 12 months after SVR at HCFMRP-USP. METHODS: The study was conducted on 174 patients with chronic hepatitis C treated with different antiviral regimens who had achieved SVR. Qualitative serum HCV-RNA was determined by the commercial kit (COBAS AMPLICOR HCV, v2.0). RESULTS: There was predominance of male (73 percent) with a mean age of 45.6 ± 10 years. Liver cirrhosis was present in 16.1 percent of the study subjects. Mean follow-up time after SVR was 47 months (12-156 months). Twenty-two patients received monotherapy with interferon; 94 received interferon plus ribavirin, and 58 received pegylated interferon plus ribavirin. A total of 134 patients (77.0 percent) received one treatment course, 29 (16.7 percent) received two courses, and 11 (6.3 percent) received three courses. The distribution of HCV genotypes was: genotype 1 (40.2 percent), genotype 3 (40.8 percent) and genotype 2 (10.3 percent). Genotype was undetermined in 8.7 percent of cases. None of the 174 patients had recurrence of HCV infection. Two cirrhotic patients developed hepatocellular carcinoma (HCC) during follow-up. CONCLUSIONS: Among patients with SVR there was no recurrence of HCV infection or evidence of liver disease progression in any patient followed up for a mean of 47 months after SVR, except for patients with advanced hepatic disease before treatment, who may develop HCC despite SVR. Therefore, one can assume that SVR is associated with long term good prognosis.

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Condiloma acuminado e ovos de Schistosoma são freqüentemente encontrados na região anal, mas não há nenhum caso descrito de associação dessas doenças nessa região. No colo uterino a associação de infecção por HPV (vírus do papiloma humano) e ovos de Schistosoma em paciente HIV (vírus da imunodeficiência humana)-positivo já foi relatada e há evidências de que essa associação possa alterar a história natural dessas doenças. Assim como no colo uterino, é possível que essa interação também ocorra na região anal. Nosso objetivo, portanto, é relatar um caso de condiloma anal em paciente HIV-positivo, que foi submetido a ressecção cirúrgica e que apresentou no exame histopatológico numerosos ovos de Schistosoma mansoni.

Condilomata acuminata and Schistosoma eggs are frequently found in the anal region, but there is no report about the association of these diseases in this region. The association of HPV infection and Schistosoma eggs in an HIV-positive patient was found in uterine cervix and there is evidence suggesting that this association can alters the natural history of these diseases. Like in the cervix, it is possible that this interaction also occurs in the anal region. So, we report a case of anal Condilomata acuminata, in an HIV-positive patient, that was ressected and contained on histopathologic examination, multiple Schistosoma eggs.

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