Oral cancers preceded by proliferative verrucous leukoplakia exhibit distinctive molecular features.

OBJECTIVE: Proliferative verrucous leukoplakia (PVL) has high rates of malignant transformation into oral squamous cell carcinoma (OSCC), but the clinical and evolutionary pattern of OSCC from PVL (PVL-OSCC) is more favorable than that of OSCC not preceded by PVL (OSCC). Here, we aimed to explore the pathophysiologic differences between PVL-OSCC and OSCC through transcriptomic and DNA methylation analyses. MATERIALS AND METHODS: In this case-control study, oral biopsies from 8 PVL-OSCC and 10 OSCC patients were obtained for global sequencing using RNAseq and a genome-wide DNA methylation analysis via the Infinium EPIC Platform (graphical abstract). RESULTS: One hundred and thirty-three differentially expressed genes (DEGs) were detected, 94 of them upregulated in OSCC. Most of these genes were previously described in cancer and associated with prognosis. The integrative analysis revealed 26 DEGs, corresponding to 37 CpGs, whose promoters were regulated by DNA methylation. Twenty-nine of the CpGs were found as hypermethylated in PVL-OSCC. Only 5 of the genes that were aberrantly methylated and differentially expressed were upregulated in PVL-OSCC patients, whereas 21 were underexpressed. CONCLUSIONS: PVL-OSCC patients presented lower expression of cancer-related genes. Hypermethylation of the promoter region of many genes was also noticed, indicating that DNA methylation could be a regulatory mechanism.

On the Oral Microbiome of Oral Potentially Malignant and Malignant Disorders: Dysbiosis, Loss of Diversity, and Pathogens Enrichment.

The role of dysbiosis in the development and progression of oral potentially malignant disorders (OPMDs) remains largely unknown. Here, we aim to characterize and compare the oral microbiome of homogeneous leucoplakia (HL), proliferative verrucous leukoplakia (PVL), oral squamous cell carcinoma (OSCC), and OSCC preceded by PVL (PVL-OSCC). Fifty oral biopsies from HL (n = 9), PVL (n = 12), OSCC (n = 10), PVL-OSCC (n = 8), and healthy (n = 11) donors were obtained. The sequence of the V3-V4 region of the 16S rRNA gene was used to analyze the composition and diversity of bacterial populations. In the cancer patients, the number of observed amplicon sequence variants (ASVs) was lower and Fusobacteriota constituted more than 30% of the microbiome. PVL and PVL-OSCC patients had a higher abundance of Campilobacterota and lower Proteobacteria than any other group analyzed. A penalized regression was performed to determine which species were able to distinguish groups. HL is enriched in Streptococcus parasanguinis, Streptococcus salivarius, Fusobacterium periodonticum, Prevotella histicola, Porphyromonas pasteri, and Megasphaera micronuciformis; PVL is enriched in Prevotella salivae, Campylobacter concisus, Dialister pneumosintes, and Schaalia odontolytica; OSCC is enriched in Capnocytophaga leadbetteri, Capnocytophaga sputigena, Capnocytophaga gingivalis, Campylobacter showae, Metamycoplasma salivarium, and Prevotella nanceiensis; and PVL-OSCC is enriched in Lachnospiraceae bacterium, Selenomonas sputigena, and Prevotella shahii. There is differential dysbiosis in patients suffering from OPMDs and cancer. To the best of our knowledge, this is the first study comparing the oral microbiome alterations in these groups; thus, additional studies are needed.

Prevalence of acute oral mucosal damage secondary to the use of systemic antineoplastics: A systematic review and meta-analysis.

OBJECTIVE: The aim of this study was to determine the prevalence of acute oral mucosal toxicities in non-irradiated patients treated with systemic antineoplastics agents. The secondary objective was to find out differences in its prevalence among the different types of systemic antineoplastics. STUDY DESIGN: A systematic review and meta-analysis was performed. Articles from 2010 to July 2022 were retrieved and included if patients were adults undergoing oral assessment after administration of commercially available systemic antineoplastics. Data was extracted and pooled proportions were estimated using random-effect model method (Der Simonian and Lair). RESULTS: Eighty-two articles were included in the study. The overall prevalence of acute oral mucosal damage across studies was 38.2% (95% CI: 33.1%-43.3%). The prevalence was 42.9% (95% CI: 32.8%-53%) in patients treated with chemotherapy alone, 38% (95% CI: 29.1%-47%) in patients treated with a combination of chemotherapy and targeted therapies, and 32.1% (95% CI: 26.8%-37.5%) in targeted therapies alone-treated patients. No statistically significant differences were found in the prevalence of oral mucosal toxicities between the different types of systemic antineoplastic treatments. CONCLUSIONS: Oral mucosal toxicity is a major side effect in non-irradiated cancer patients undergoing systemic antineoplastics.

Prediction of the risk of cancer and the grade of dysplasia in leukoplakia lesions using deep learning.

OBJECTIVES: To estimate the probability of malignancy of an oral leukoplakia lesion using Deep Learning, in terms of evolution to cancer and high-risk dysplasia. MATERIALS AND METHODS: A total of 261 oral leukoplakia lesions with a mean of 5.5 years follow-up were analysed from standard digital photographs. A deep learning pipeline composed by a U-Net based segmentation of the lesion followed by a multi-task CNN classifier was used to predict the malignant transformation and the risk of dysplasia of the lesion. An explainability heatmap is constructed using LIME in order to interpret the decision of the model for each output. RESULTS: A Dice coefficient of 0.561 was achieved on the segmentation task. For the prediction of a malignant transformation, the model provided a sensitivity of 1 with a specificity of 0.692. For the prediction of high-risk dysplasia, the model achieved a specificity of 0.740 and a sensitivity of 0.928. CONCLUSION: The proposed model using deep learning can be a helpful tool for predicting the possible malignant evolution of oral leukoplakias. The generated heatmap provides a high confidence on the output of the model and enables its interpretability.

The Effectiveness of Glutathione Redox Status as a Possible Tumor Marker in Colorectal Cancer.

The role of oxidative stress (OS) in cancer is a matter of great interest due to the implication of reactive oxygen species (ROS) and their oxidation products in the initiation of tumorigenesis, its progression, and metastatic dissemination. Great efforts have been made to identify the mechanisms of ROS-induced carcinogenesis; however, the validation of OS byproducts as potential tumor markers (TMs) remains to be established. This interventional study included a total of 80 colorectal cancer (CRC) patients and 60 controls. By measuring reduced glutathione (GSH), its oxidized form (GSSG), and the glutathione redox state in terms of the GSSG/GSH ratio in the serum of CRC patients, we identified significant changes as compared to healthy subjects. These findings are compatible with the effectiveness of glutathione as a TM. The thiol redox state showed a significant increase towards oxidation in the CRC group and correlated significantly with both the tumor state and the clinical evolution. The sensitivity and specificity of serum glutathione levels are far above those of the classical TMs CEA and CA19.9. We conclude that the GSSG/GSH ratio is a simple assay which could be validated as a novel clinical TM for the diagnosis and monitoring of CRC.

Association between maxillary sinus pathology and odontogenic lesions in patients evaluated by cone beam computed tomography. A systematic review and meta-analysis

BACKGROUND: A study is made of the association between maxillary sinus pathology and odontogenic lesions in patients evaluated with cone beam computed tomography. MATERIAL AND METHODS: A literature search was made in five databases and OpenGrey. Methodological assessment was carried out using the Newcastle-Ottawa tool for observational studies. The random-effects model was used for the meta-analysis. RESULTS: Twenty-one studies were included in the qualitative review and 6 in the meta-analysis. Most presented moderate or low risk of bias. The periodontal disease showed to be associated with the thickening of the sinus membrane (TSM). Mucous retention cysts and opacities were reported in few studies. The presence of periapical lesions (PALs) was significantly associated to TSM (OR = 2.43 (95%CI:1.71-3.46); I2 = 34.5%) and to odontogenic maxillary sinusitis (OMS)(OR = 1.77 (95%CI: 1.20-2.61); I2 = 35.5%). CONCLUSIONS: The presence of PALs increases the probability of TSM and OMS up to 2.4-fold and 1.7-fold respec-tively. The risk differences suggests that about 58 and 37 of out every 100 maxillary sinuses having antral teeth with PALs are associated with an increased risk TSM and OMS respectively. The meta-evidence obtained in this study was of moderate certainty, and although the magnitude of the observed associations may vary, their direc-tion in favor sinus disorders appearance, would not change as a result

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Review and update on drugs related to the development of osteonecrosis of the jaw

BACKGROUND: Medication-related osteonecrosis of the jaw (MRONJ) is a rare, but serious adverse effect of certain drugs, of which bisphosphonates are the most widely known. This pathology is also associated with other medications such as the biologic antiresorptive agent, denosumab and some antiangiogenics such as sunitinib, bevacizumab or aflibercept. Very recently, new medications have also been associated with osteonecrosis of the jaw (ONJ). The objectives were to update the list of medications associated with ONJ, to analyze the fundamental aspects of this list and to describe the level of evidence available. MATERIAL AND METHODS: A narrative bibliographic review was made, using the PubMed-MedLine, DOAJ and SCI-ELO databases. Additional information was obtained through the online Medication Information Centre of the Spanish Agency of Medicines and Medical Devices (AEMPS - CIMA), the websites of the US Food & Drugs Administration (Drugs@FDA) and the European Medicines Agency (EMA). RESULTS: The latest drugs identified as potential facilitators of this pathology include a number of anti-VEGF based antiangiogenic drugs and anti-TKI and different types of immunomodulators. Neither the level of evidence in this association nor the risk are equal for all these drugs. On the other hand, over the coming years, new drugs will be marketed with similar action mechanisms to those that are recognized as having this adverse effect. CONCLUSIONS: No effective therapy is currently known for the treatment of ONJ. Therefore, in order to prevent new cases of MRONJ, it is essential for all oral healthcare professionals to be fully up-to-date with the etiopathogenic aspects of this pathology and to be aware of those drugs considered to be a risk

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Brazilian version of the Fresno test of competence in Evidence-Based Medicine: a validation study / Versão brasileira do teste Fresno de competência em Medicina Baseada em Evidências: um estudo de validação

AIMS: To validate the Brazilian version of the Fresno test of competence in Evidence-Based Medicine. METHODS: This is a cross-sectional, validation study. Phase 1: translation of the Fresno instrument. Phase 2: validation of the translated version, which was tested in 70 undergraduate medical students. The psychometric properties evaluated were validity, internal consistency, and sensitivity to change. RESULTS: Overall, validity was adequate; most items showed a moderate to strong and significant correlation with the total score; there was an important and significant difference between both groups, with and without previous contact with Evidence-Based Medicine (median, 55 [IQ25-75, 45.2-61.7] vs. median, 18.5 [IQ25-75, 6.0-29.7]) (p<0.001). Internal consistency was also adequate (α-C 0.718), and sensitivity to change showed a considerable and significant difference between pre and post-test (median, 18.5 [IQ25-75, 6.0-29.7] vs. median, 44 [IQ25-75, 34.0-60.0]) (p<0.001). CONCLUSIONS: The Brazilian version of the Fresno test showed satisfactory psychometric properties, and it can now be used as a tool to assess the knowledge and skills of Evidence-Based Medicine in Brazilian medical students.

OBJETIVOS: Validar a versão brasileira do teste Fresno de competência em Medicina Baseada em Evidências. MÉTODOS: Este é um estudo transversal de validação. Fase 1: tradução do instrumento Fresno. Fase 2: validação da versão traduzida, testada em 70 estudantes de graduação em medicina. As propriedades psicométricas avaliadas foram validade, consistência interna e sensibilidade à mudança. RESULTADOS: No geral, a validade foi adequada; a maioria dos itens apresentou correlação moderada a forte e significativa com o escore total; houve diferença importante e significativa entre os dois grupos, com e sem contato prévio com medicina baseada em evidências (mediana, 55 [IQ25-75, 45,2-61,7] vs. mediana, 18,5 [IQ25-75, 6,0-29,7]) (p<0,001). A consistência interna também foi adequada (α-C 0,718), e a sensibilidade à mudança mostrou uma diferença considerável e significativa entre o pré e o pós-teste (mediana, 18,5 [IQ25-75, 6,0-29,7] vs. mediana, 44 [IQ25-75], 34,0-60,0]) (p<0,001). CONCLUSÕES: A versão brasileira do teste Fresno mostrou propriedades psicométricas satisfatórias, e agora pode ser usada como uma ferramenta para avaliar o conhecimento e as habilidades da Medicina Baseada em Evidências em estudantes de medicina brasileiros.

Immunohistochemical analysis of tissue factor expression in gastric carcinoma: correlations with prognosis and survival. / Análise da expressão imuno-histoquímica do fator tecidual no carcinoma gástrico: correlações com prognóstico e sobrevida.

OBJECTIVE: to study the expression of the tissue factor (TF) and its correlation with prognosis and survival in patients with gastric carcinoma. METHODS: we measured the immunohistochemical expression of TF in 50 specimens of gastric adenocarcinomas from patients submitted to curative surgery. We then compared the intensity of its expression with clinical and pathological data, TNM staging, prognostic factors and survival. RESULTS: all tumors displayed TF expression; the intensity of TF expression was not associated with TNM stage, clinical or pathological variables or general survival. CONCLUSION: TF has a high expression in gastric carcinoma, but that it is not useful as a prognostic marker.

OBJETIVO: estudar a expressão do fator tecidual (FT) e sua correlação com o prognostico e sobrevida em pacientes com carcinoma gástrico. MÉTODOS: verificamos a expressão imuno-histoquímica do FT em 50 espécimes de adenocarcinomas gástricos de pacientes submetidos a tratamento cirúrgico com intenção curativa. A intensidade da sua expressão foi comparada com dados clínicos e patológicos, estadiamento TNM, fatores prognósticos e sobrevida. RESULTADOS: houve expressão do FT em todos os tumores; a intensidade de expressão do FT não foi associada com estágio TNM, variáveis clínicas ou patológicas ou sobrevida geral. CONCLUSÃO: este estudo mostra que o FT tem uma expressão elevada em carcinoma gástrico, mas que este não é útil como marcador de prognóstico.

Principais tópicos em oncogenética / Main subjects in oncogenetics

Introdução: O câncer é um distúrbio genético no qual ocorre a perda do controle da proliferação celular. De maneira geral, podemos dividir os casos de câncer em esporádicos (mutações somáticas restritas ao tumor), que são a maioria, e hereditários (mutações germinativas presentes em todas as células do indivíduo), que em conjunto correspondem a aproximadamente a 10% de todos os casos. É importante compreender o papel da Oncogenética na identificação de pacientes com risco aumentado para desenvolvimento de câncer para possibilitar medidas de detecção precoce, de prevenção e de tratamento, diferenciadas das recomendadas para a população em geral. Métodos: Foi realizada revisão da literatura através dos sites de busca PubMed e Scielo, bem como através de literatura e Guidelines pertinentes à área da Oncogenética. Resultados: A indicação de investigação genética molecular deve ser baseada em uma suspeita de câncer hereditário, sugerida pela história de câncer do paciente e de sua família. Os critérios de indicação variam para as diversas síndromes hereditárias. Assim, torna-se importante o aconselhamento genético pré e pós-teste, a fim de direcionar a investigação mais indicada para cada caso e permitir que o paciente possa realizar escolhas informadas e adaptar-se ao risco e/ou à condição que esse diagnóstico traz à sua vida. Conclusão: A fim de tornar a oncogenética acessível à população em risco, é necessário capacitar mais profissionais no aconselhamento genético, buscar um maior acesso aos exames moleculares especialmente no serviço público de saúde, garantir a qualidade dos testes realizados por diferentes centros e a adequada interpretação de seus resultados.

Introduction: Cancer is a genetic disorder in which occurs a loss of control of cell proliferation. In general, we can divide cancer cases into sporadic (tumor-restricted somatic mutations), which are the majority, and hereditary (germ mutations present in all the cells of the individual), which together account for approximately 10% of all cases. It is important to understand the role of Oncogenetics in identifying patients at increased risk for cancer development in order to enable early detection, prevention and treatment measures, unlike those recommended for the general population. Methods: A review of the literature was performed through PubMed and Scielo databases, as well as through literature and guidelines considered relevant to the area of Oncogenetics. Results: The indication of molecular genetic research should be based on a suspected hereditary cancer, suggested by the patient's and his family's cancer history. The indication criteria vary for the various hereditary syndromes. Thus, pre and post-test genetic counseling becomes important in order to direct the most appropriate investigation for each case, allowing the patient to make informed decisions and to adapt to the risk and / or to the condition this diagnosis brings to his / her life. Conclusion: In order to make Oncogenetics accessible to the population at risk, it is necessary to train more professionals in genetic counseling, to seek greater access to molecular tests, especially in the public health service, to ensure the quality of the tests carried out by different centers and also to provide adequate interpretation of the results.

Abdome agudo oncológico: diagnóstico e manejo / Oncological acute abdomen: diagnosis and management

Introdução: Queixas gastrointestinais em pacientes oncológicos podem representar um dilema diagnóstico com taxas significativas de morbidade e mortalidade. O abdome agudo secundário à neoplasia é geralmente multifatorial. Causas relacionadas à neoplasia podem ser diretas (efeito mecânico do tumor, sangramento tumoral, progressão de doença) ou indiretas (manifestações sistêmicas como imunossupressão e hipercoagulabilidade). Devido às diversas possíveis causas subjacentes, a avaliação clínica se torna complicada dado o quadro clínico por vezes atípico e a apresentação eventualmente tardia, visto que a imunossupressão pode atenuar muitos achados. O exame de imagem, em especial a tomografia computadorizada, desempenha um papel fundamental na identificação da causa subjacente, no mapeamento da extensão da doença e na triagem de candidatos cirúrgicos. Métodos: Realizou-se busca nas bases de dado PubMed, Scielo e Embase, procurando os termos "Oncologic Acute Abdomen" e "Oncological Acute Abdomen", sendo selecionados os artigos mais relevantes e focados na prática clínica, de forma a resumir as principais etiologias, diagnóstico e manejo. Resultados: A causa mais recorrente de abdome agudo oncológico é, de forma ampla, intestinal, abarcando diagnósticos de obstrução, perfuração e causas inflamatórias. Conclusão: A cirurgia para emergências abdominais em pacientes com câncer avançado carrega um alto risco operatório e requer discussão multidisciplinar de indicações, com total respeito pelas regras éticas. O objetivo da cirurgia é melhorar os sintomas e focar tanto na qualidade de vida quanto na duração da sobrevida. Muitas alternativas existem e suas vantagens e limitações devem ser pesadas antes de recorrer a um procedimento cirúrgico.

Introduction: Gastrointestinal complaints in cancer patients may represent a diagnostic dilemma with significant morbidity and mortality rates. The acute abdomen secondary to neoplasia is usually multifactorial. Causes related to neoplasia can be direct (mechanical tumor effect, tumor bleeding, disease progression) or indirect (systemic manifestations such as immunosuppression and hypercoagulability). Due to the many possible underlying causes, clinical evaluation becomes complicated given the sometimes-atypical clinical picture and the eventually late presentation, since immunosuppression may attenuate many findings. Imaging, especially computed tomography, plays a key role in identifying the underlying cause, mapping the extent of disease, and screening surgical candidates. Methods: We searched the databases PubMed, Scielo and Embase, searching for the terms "Oncologic Acute Abdomen" and "Oncological Acute Abdomen", being selected the most relevant articles and focused on clinical practice, in order to summarize the main etiologies, diagnosis, and management. Results: The most frequent cause of acute oncologic abdomen is the intestinal cause, encompassing diagnoses of obstruction, perforation and inflammatory causes. Conclusion: Surgery for abdominal emergencies in patients with advanced cancer carries a high surgical risk and requires a multidisciplinary discussion of indications, with full respect for ethical rules. The goal of surgery is to improve the symptoms and focus on both quality of life and duration of survival. Many alternatives exist and their advantages and limitations must be weighed before resorting to a surgical procedure.

Carcinomatose peritoneal em câncer gástrico: diagnóstico, manejo e conduta / Peritoneal carcinomatosis in gastric cancer: diagnosis, management and conduct

Introdução: O câncer gástrico (CG) é a segunda principal causa de morte relacionada a câncer no mundo. A incidência global e os tipos histológicos estão mudando. A incidência dos tumores da transição esofagogástrica e o adenocarcinoma da cárdia estão aumentando, embora tenha havido uma redução da incidência de CG distal desde a década de 1970. Grande parte dos pacientes apresenta-se com doença localmente avançada ou metastática. A carcinomatose peritoneal (CP) de origem gástrica tem um prognóstico desfavorável e uma sobrevida curta devido à ausência de modalidades terapêuticas efetivas. Métodos: Foi realizada uma revisão da literatura nas bases de busca PubMed, Scielo e Embase, sendo selecionados os artigos mais relevantes a fim de organizar uma revisão concisa e atualizada do assunto. Resultados: O prognóstico do CG depende de estágio e localização. A disseminação metastática pode ser hematogênica ou por disseminação para a cavidade peritoneal. Estudos recentes mostram que a disseminação peritoneal é mais frequente do que metástases hematogênicas. Apesar de ser a causa de 60% das mortes no câncer gástrico, a metástase peritoneal pode ser considerada uma doença local, e uma abordagem multimodal pode melhorar o prognóstico, mesmo se tratando de uma doença avançada. Na falta de tratamento curativo, a quimioterapia sistêmica pode ser considerada uma opção, ainda que seja de valor limitado para pacientes com CG e CP. Atualmente, a quimioterapia intraperitoneal hipertérmica (HIPEC) está sendo muito estudada e debatida no tratamento das doenças da superfície peritoneal. Conclusão: Dado o mau prognóstico, o custo-benefício dos regimes quimioterápicos atuais permanece questionável. Pesquisas adicionais devem ser realizadas para otimizar terapia.

Introduction: Gastric cancer (GC) is the second leading cause of cancer-related death in the world. The overall incidence and histological subtypes is changing. The incidence of esophagogastric transitional tumor and cardia adenocarcinoma is increasing, although there has been a reduction in the incidence of distal GC since the 1970s. Majority of patients present with locally advanced or metastatic disease. Peritoneal carcinomatosis (PC) of gastric origin has an unfavorable prognosis and short survival due to the lack of effective therapeutic modalities. Methods: A review of the literature was carried out in PubMed, Scielo and Embase, and the most relevant articles were selected in order to organize a concise and updated review of the subject. Results: The prognosis of GC depends on stage and location. Metastatic dissemination may be hematogenic or disseminated into the peritoneal cavity. Recent studies show that peritoneal dissemination is more frequent than hematogenous metastases. Although it is the cause of 60% of deaths in gastric cancer, peritoneal metastasis can be considered a local disease, and a multimodal approach may improve the prognosis, even if it is a terminal disease. In the absence of curative treatment, systemic chemotherapy may be considered an option, although it is of limited value for patients with GC and PC. Currently, hyperthermic intraperitoneal chemotherapy (HIPEC) is the most widely accepted treatment for peritoneal diseases. Conclusion: Given the poor prognosis, the cost-effectiveness of current chemotherapy regimens remains questionable. Additional research should be done to optimize therapy.

Análise da expressão imuno-histoquímica do fator tecidual no carcinoma gástrico: correlações com prognóstico e sobrevida / Immunohistochemical analysis of tissue factor expression in gastric carcinoma: correlations with prognosis and survival

RESUMO Objetivo: estudar a expressão do fator tecidual (FT) e sua correlação com o prognostico e sobrevida em pacientes com carcinoma gástrico. Métodos: verificamos a expressão imuno-histoquímica do FT em 50 espécimes de adenocarcinomas gástricos de pacientes submetidos a tratamento cirúrgico com intenção curativa. A intensidade da sua expressão foi comparada com dados clínicos e patológicos, estadiamento TNM, fatores prognósticos e sobrevida. Resultados: houve expressão do FT em todos os tumores; a intensidade de expressão do FT não foi associada com estágio TNM, variáveis clínicas ou patológicas ou sobrevida geral. Conclusão: este estudo mostra que o FT tem uma expressão elevada em carcinoma gástrico, mas que este não é útil como marcador de prognóstico.

ABSTRACT Objective: to study the expression of the tissue factor (TF) and its correlation with prognosis and survival in patients with gastric carcinoma. Methods: we measured the immunohistochemical expression of TF in 50 specimens of gastric adenocarcinomas from patients submitted to curative surgery. We then compared the intensity of its expression with clinical and pathological data, TNM staging, prognostic factors and survival. Results: all tumors displayed TF expression; the intensity of TF expression was not associated with TNM stage, clinical or pathological variables or general survival. Conclusion: TF has a high expression in gastric carcinoma, but that it is not useful as a prognostic marker.

Variation of Binge Eating One Year after Roux-en-Y Gastric Bypass and Its Relationship with Excess Weight Loss.

BACKGROUND: Bariatric surgery is the most effective treatment for obesity classes II and III. However, some patients do not get the desired results or initially lose and then regain the lost weight. Identifying these individuals early on and treating them adequately remains a challenge. As binge eating directly affects food intake, the study of this symptom and its relation to bariatric surgery and its results is increasing, because it appears to have an influence on the results of surgery. OBJECTIVES: This study aimed to see how binge eating changes, measured with the Binge Eating Scale, interferes in the % excess weight loss one year after Roux-en-Y gastric bypass. METHODS: We conducted a cross-sectional study with 149 patients older than 18 years who were evaluated one year after undergoing Roux-en-Y gastric bypass. The variation in the intensity of binge eating was measured with the pre- and postoperative Binge Eating Scale scores. RESULTS: The variation of one unit in the Binge Eating Scale implied an inverse variation of 0.41% of % excess weight loss (p<0.05). The correlation coefficient between the variation of binge eating and the % excess weight loss was -0.186 (p = 0.033). The correlation coefficient between the binge eating symptoms one year after surgery and the % excess weight loss was -0.353 (p<0.001). CONCLUSIONS: There was a correlation between the variation of binge eating one year after gastric bypass and the % excess weight loss. The correlation between binge eating and the % excess weight loss was greater after the surgery than it was at the preoperative stage. This study provides new, valuable information on the intensity and variation of binge eating symptoms one year after gastric bypass, which, to the best of our knowledge, have not been studied in depth earlier.

Microcirurgia: modelo de treinamento básico para estudantes de Medicina / Microsurgery: basic training model for medical students

Introdução: Atualmente, existe uma carência de exposição à cirurgia plástica durante a graduação. A maioria dos currículos universitários não possui uma forma específica de ensino em cirurgia plástica. Para reverter essa situação, algumas universidades fomentam o contato precoce com a cirurgia plástica através de cursos extracurriculares. Método: Foi desenvolvido um Curso Básico de Microcirurgia para acadêmicos de Medicina com uma aula teórica e uma prática, anualmente e ao longo de 3 anos; na última edição, foi aplicado um questionário sobre o interesse na área e a importância no ensino durante a graduação. Resultados: Dentre os alunos, 65% apresentaram grande interesse pela microcirurgia, 95% relataram um aumento de interesse. Todos os alunos concordaram que os acadêmicos de Medicina devem ser mais envolvidos e treinados na área microcirúrgica durante a graduação. Conclusões: O desenvolvimento de um curso de treinamento básico de microcirurgia para acadêmicos de Medicina é benéfico para o aprendizado dos alunos, para obtenção de informações acerca da disciplina e para o aprimoramento de habilidades(AU)

Introduction: Currently there is a lack of exposure to plastic surgery during medical graduation. Most college curricula do not have a specific form of education in plastic surgery. To reverse this situation, some universities encourage early contact with plastic surgery through extracurricular courses. Methods: We developed a basic course of microsurgery for medical students with a lecture and a practical class, annually and over 3 years; in the last edition, a questionnaire on the interest in the area and the importance in education during graduation was applied. Results: Among the students, 65% showed great interest in microsurgery, and 95% reported an increase of interest. All students agreed that medical students should be more involved and trained in the microsurgical area during graduation. Conclusions: The development of a basic training course of microsurgery for medical students is beneficial for student learning, obtaining information about the discipline, and improving skills(AU)

The history of the parathyroid surgery.

The authors conducted a review of the major aspects of progression of knowledge about the surgical treatment of hyperparathyroidism. Through literature review, we analyzed articles on the history of the evolution of anatomical, physiological, pathological and surgical knowledge of the parathyroid glands. Because of their unique anatomical features, the parathyroid glands were the last of the endocrine glands to be discovered, which greatly hindered proper treatment until the first decades of the twentieth century. Technological developments in the last 30 years greatly facilitated the location of the glands and hyperparathyroidism surgery. However, an experienced and dedicated surgeon is still essential to the excellence of treatment. RESUMO Os autores fizeram uma revisão dos principais aspectos históricos da progressão do conhecimento sobre o tratamento cirúrgico do hiperparatireoidismo. Por meio de revisão bibliográfica, foram analisados artigos selecionados sobre a história da evolução do conhecimento anatômico, fisiológico, patológico e cirúrgico das glândulas paratireoides. Devido às suas características anatômicas peculiares, as paratireoides foram as últimas das glândulas endócrinas a serem descobertas, o que dificultou sobremaneira seu tratamento adequado até as primeiras décadas do Século XX. A evolução tecnológica ocorrida nos últimos 30 anos facilitou sobremaneira a localização das glândulas e a cirurgia do hiperparatireoidismo. Contudo, um cirurgião experiente e dedicado ao tratamento dessa enfermidade ainda é fundamental para a excelência do tratamento.

The history of the parathyroid surgery / A história da cirurgia das paratireoides

ABSTRACT The authors conducted a review of the major aspects of progression of knowledge about the surgical treatment of hyperparathyroidism. Through literature review, we analyzed articles on the history of the evolution of anatomical, physiological, pathological and surgical knowledge of the parathyroid glands. Because of their unique anatomical features, the parathyroid glands were the last of the endocrine glands to be discovered, which greatly hindered proper treatment until the first decades of the twentieth century. Technological developments in the last 30 years greatly facilitated the location of the glands and hyperparathyroidism surgery. However, an experienced and dedicated surgeon is still essential to the excellence of treatment.

RESUMO Os autores fizeram uma revisão dos principais aspectos históricos da progressão do conhecimento sobre o tratamento cirúrgico do hiperparatireoidismo. Por meio de revisão bibliográfica, foram analisados artigos selecionados sobre a história da evolução do conhecimento anatômico, fisiológico, patológico e cirúrgico das glândulas paratireoides. Devido às suas características anatômicas peculiares, as paratireoides foram as últimas das glândulas endócrinas a serem descobertas, o que dificultou sobremaneira seu tratamento adequado até as primeiras décadas do Século XX. A evolução tecnológica ocorrida nos últimos 30 anos facilitou sobremaneira a localização das glândulas e a cirurgia do hiperparatireoidismo. Contudo, um cirurgião experiente e dedicado ao tratamento dessa enfermidade ainda é fundamental para a excelência do tratamento.