Você está pensando, refletindo, analisando o que você vê e o que você faz o tempo todo: percepção de residentes de Medicina de Família e Comunidade sobre vídeo feedback / You are thinking, reflecting, analysing what you see and what you do all the time: perception of General Practice trainees about video feedback / Estás pensando, reflexionando, analizando lo que ves y lo que haces todo el tiempo: percepción de los residentes de Medicina Familiar y Comunitaria sobre vídeo feedback

Introdução: A comunicação é reconhecida como uma habilidade central por vários órgãos reguladores internacionais da educação médica. O ensino específico de habilidades de comunicação é fundamental para melhorar a comunicação dos médicos. As técnicas experienciais mostraram superioridade em comparação com os modelos tradicionais. A utilização de consultas reais ajuda os estudantes a visualizar melhor as suas competências de entrevista e a refletir sobre elas. Com os avanços da tecnologia, o uso de consultas médicas gravadas em vídeo tornou-se a abordagem padrão para o ensino da comunicação. No entanto, a eficácia dessa técnica depende do envolvimento ativo dos estudantes. As suas contribuições e comentários dos pares sobre a consulta gravada são essenciais para a aprendizagem. Contudo, a perspectiva do estudante sobre a utilidade dessa abordagem educativa recebeu pouca atenção. Objetivos: Compreender a percepção da aprendizagem dos residentes de medicina de família e comunidade resultante da atividade de vídeo feedback na sua formação profissional. Métodos: Estudo exploratório, qualitativo, realizado com residentes do primeiro ano de medicina de família e comunidade de um programa de residência estabelecido em São Paulo, Brasil. Os participantes foram entrevistados após as sessões educativas, que foram analisadas por meio de análise temática reflexiva. Resultados: A autopercepção de sua prática, o aprendizado de habilidades de comunicação e os ganhos afetivos foram identificados pelos participantes como pontos de aprendizado derivados da atividade de vídeo feedback. Além disso, sobre o aprendizado de habilidades específicas de comunicação, eles mencionaram comunicação não-verbal e verbal, conexões entre teoria e prática, estrutura de consulta e oportunidades para cristalizar conhecimentos. Os ganhos afetivos incluíram sentir-se parte de um grupo, melhora da autoestima, superação de inseguranças, percepção de consultas mais efetivas, reforço do gosto pelo trabalho e reconhecer a necessidade de mais aprendizado. Conclusões: Os ganhos de aprendizagem identificados em nosso estudo levaram a uma experiência de humanidade compartilhada, que permite aos participantes serem mais efetivos técnica e afetivamente com seus pacientes. Além disso, identificamos que a atividade educativa de vídeo feedback pode ser utilizada para outros possíveis fins educacionais além do ensino da comunicação.

Introduction: Communication is recognized as a central skill by various international medical education regulatory bodies. Specific teaching on communication skills is important to enhance doctors' communication. Experiential techniques appear to be superior compared to traditional models. Real-life consultation helps trainees visualize their interview skills and reflect on them. Upgraded by technology, the use of video-recorded medical visits became the standard approach for communication teaching. However, the effectiveness pf this technique relies on trainees' active involvement. Their inputs and peer feedback on the recorded consultation are essential to learning. Despite its importance, their perspective on the usefulness of video feedback in medical education has received limited attention. Objective: To understand the perception of learning among general practice trainees as a result of the video feedback activity in their vocational training. Methods: An exploratory, qualitative study, conducted with first-year general practice trainees from an established training program in São Paulo, Brazil. Participants were interviewed after educational session, which were analyzed using reflexive thematic analysis. Results: Self-perception of their practice, communication skills learning, and affective gains were identified by participants as learning points derived from the video feedback activity. Furthermore, for specific communication skills learning, they mentioned nonverbal and verbal communication, theory and practice connections, consultation structure and opportunities for crystallizing knowledge. Affective gains included feeling part of a group, improving self-esteem, overcoming insecurities, perception of more effective consultations, reinforcing fondness for their work, and need for more learning. Conclusions: The learning gains identified in our study led to an experience of common humanity, which allowed participants to be more technically and affectively effective with their patients. Also, we identified that the video feedback educational activity can be used for other possible educational purposes, beyond the teaching of communication.

Introducción: La comunicación es reconocida como una habilidad fundamental por varios organismos reguladores internacionales de educación médica. La enseñanza específica de habilidades de comunicación es importante para mejorar la comunicación de los médicos. Las técnicas experienciales parecen ser superiores a los modelos tradicionales. El uso de consultas reales ayuda a los estudiantes a visualizar y reflexionar mejor sobre sus habilidades de entrevista. Actualizado por la tecnología, el uso de consultas médicas grabadas en video se ha convertido en el enfoque estándar para la enseñanza de la comunicación. Sin embargo, para que la técnica funcione, la participación de los estudiantes es crucial. Sus contribuciones y comentarios de los compañeros sobre la consulta grabada son esenciales para el aprendizaje. Sin embargo, la perspectiva de los estudiantes sobre la utilidad de este enfoque educativo ha recibido poca atención. Objetivos: Comprender la percepción del aprendizaje por parte de los residentes de medicina de familia y comunitaria como resultado de la actividad de vídeo feedback en su formación profesional. Métodos: Estudio cualitativo exploratorio realizado con residentes de primer año de medicina familiar y comunitaria de un programa de residencia establecido en São Paulo, Brasil. Los participantes fueron entrevistados después de una sesión educativa, que fueron analizados mediante análisis temático reflexivo. Resultados: La autopercepción de su práctica, el aprendizaje de habilidades comunicativas y las ganancias afectivas fueron identificadas por los participantes como puntos de aprendizaje derivados de la actividad de vídeo feedback. Además, sobre el aprendizaje de habilidades comunicativas específicas, mencionaron la comunicación verbal y no verbal, las conexiones entre la teoría y la práctica, la estructura de consulta y las oportunidades para cristalizar conocimientos. En cuanto a las ganancias afectivas, relataron sentirse parte de un grupo, mejora de la autoestima, superación de las inseguridades, percepción de consultas más efectivas, refuerzo del gusto por el trabajo y necesidad de más aprendizaje. Conclusión: Los logros de aprendizaje identificados en nuestro estudio llevaron a una experiencia de humanidad compartida, que permite a los participantes ser técnica y afectivamente más efectivos con sus pacientes. Además, identificamos que la actividad educativa de vídeo feedback puede ser utilizada para otros posibles fines educativos, además de la enseñanza de la comunicación.

Physicians' attention to patients' communication cues can improve patient satisfaction with care and perception of physicians' empathy.

BACKGROUND: The pathway that links good communication skills and better health outcomes is still unclear. However, it is known that the way that physicians and patients communicate with each other has direct consequences on more "proximal outcomes", such as perceptions of physician empathy and patient satisfaction. However, which specific communication skills lead to those patient outcomes is still unknown. In this study, the authors aimed to analyze which specific patient and physician communication skills are correlated to patients' satisfaction with care and patient-perceived physician empathy. METHODS: The authors classified and quantified verbal and nonverbal communication of second-year internal medicine residents and their patients through video recordings of their consultations. Patients also rated their satisfaction with care and the physician's empathy for them. RESULTS: Using a linear regression model, the authors identified that patients' and physicians' expressions of disapproval, physicians' disruptions, and patients' use of content questions negatively correlated to patients' satisfaction and patient-perceived physician empathy. Conversely, patient affective behaviors and the physician's provision of advice/suggestion were positively correlated to at least one of the patient-measured outcomes. CONCLUSION: Our findings point to the importance of physicians' attentiveness to patients' communication cues. Training physicians to interpret those cues could help develop more satisfactory and empathic therapeutic relationships.

Evaluation of HNF1B, KLK3, ELAC2, TMPRSS2-ERG, and CTNNB1 polymorphisms associated with prostate cancer in samples of patients from HUPE-UERJ.

PURPOSE: Prostate cancer (PCa) is the leading cause of death among men in 48 countries. Genetic alterations play a significant role in PCa carcinogenesis. For the hypothesis of this research, five unique polymorphisms (SNP) were investigated in different genes that showed to be associated in different ways with PCa: rs4430796, rs2735839, rs4792311, rs12329760, and rs28931588, respectively for the genes HNF1B, KLK3, ELAC2, TMPRSS2-ERG, and CTNNB1. PATIENTS AND METHODS: Blood samples from 426 subjects were evaluated: 290 controls (161 females and 129 males) and 136 PCa patients. SNP were determined by real-time polymerase chain reaction. TaqMan SNP genotyping assay. In the control samples, the SNPs were defined in association with the self-reported ethnicity, and in 218 control samples with markers with ancestry indicators. The genes were in Hardy-Weinberg equilibrium. One hundred and seventy control samples were matched by ethnicity for comparison with the PCa samples. RESULTS: The G allele at rs28931588 was monomorphic in both patients and controls studied. Significant differences were observed in allelic and genotypic frequencies between the control and Pca samples in rs2735839 (KLK3; p = 0.002 and χ2 = 8.73 and p = 0.01, respectively), by the global frequency and in the dominant model rs2735839_GG (odds ratio [OR] = 0.51, p = 0.02). AA and GA genotypes at rs4792311 (ELAC2) were more frequent in patients with Gleason 7(4 + 3), 8, and 9 (n = 37%-59.7%) compared to patients with Gleason 6 and 7(3 + 4) (n = 26%-40.0%) conferring a protective effect on the GG genotype (OR = 0.45, p = 0.02). The same genotype showed an OR = 2.71 (p = 0.01) for patients with low severity. The HNF1B-KLK3-ELAC2-TMPRSS2-ERG haplotypes: GAAT, AAAT, GAGT, and AAGT were more frequent in patients with Pca with OR ranging from 4.65 to 2.48. CONCLUSIONS: Higher frequencies of risk alleles were confirmed in the SNPs, KLK3 rs2735839_A, ELAC2 rs4792311_A, and TMPRSS2 rs12329760_T in patients with Pca. Rs2735839_A was associated with risk of Pca and rs4792311_A with severity and Gleason score of 7(4 + 3) or greater. There is a need for careful observation of rs2735839 and rs4792311 in association with the prostatic biopsy due to the increased risk of Pca.

Ultrasound biomicroscopy for the assessment of early-stage nonalcoholic fatty liver disease induced in rats by a high-fat diet.

PURPOSE: The aim of this study was to assess the ability of ultrasound biomicroscopy (UBM) to diagnose the initial stages of nonalcoholic fatty liver disease (NAFLD) in a rat model. METHODS: Eighteen male Wistar rats were allocated to control or experimental groups. A high-fat diet (HFD) with 20% fructose and 2% cholesterol, resembling a common Western diet, was fed to animals in the experimental groups for up to 16 weeks; those in the control group received a regular diet. A 21 MHz UBM system was used to acquire B-mode images at specific times: baseline (T0), 10 weeks (T10), and 16 weeks (T16). The sonographic hepatorenal index (SHRI), based on the average ultrasound image gray-level intensities from the liver parenchyma and right renal cortex, was determined at T0, T10, and T16. The liver specimen histology was classified using the modified Nonalcoholic Steatohepatitis Clinical Research Network NAFLD activity scoring system. RESULTS: The livers in the animals in the experimental groups progressed from sinusoidal congestion and moderate macro- and micro-vesicular steatosis to moderate steatosis and frequent hepatocyte ballooning. The SHRI obtained in the experimental group animals at T10 and T16 was significantly different from the SHRI of pooled control group. No significant difference existed between the SHRI in animals receiving HFD between T10 and T16. CONCLUSION: SHRI measurement using UBM may be a promising noninvasive tool to characterize early-stage NAFLD in rat models.

Undifferentiated Embryonal Sarcoma of the Liver Involving All Major Hepatic Veins Treated by Left Extended Trisectionectomy.

Introduction: Over the past few years, liver surgery has been in constant evolution and gained many improvements that helped surgeons push limits further. A complex procedure such as left extended trisectionectomy, as described by Makuuchi in 1987, may be performed in selected cases. Aim: Describe a case of successful resection of a huge bilobar liver sarcoma involving all hepatic veins from a young female patient, in which the blood outflow was preserved through an inferior right hepatic vein, leaving only segment 6 as liver remnant. Case Report. A 19-year-old female with a 3-month history of abdominal pain, vomiting, and weight loss was referred for our evaluation. CT scan and MRI revealed a heterogeneous and bulky expansive hepatic lesion, sparing only segment 6, with an estimated volume of 530 cm3, corresponding to a 1.2 FLR/BW ratio. The tumor involved the three major hepatic veins, but an inferior right hepatic vein was present, draining the spared segment 6. She was submitted to a left trisectionectomy extended to the caudate lobe and segment 7, including resection of all hepatic veins and lymphadenectomy of the hepatic pedicle. She was discharged on the 7th postoperative day without complications. The histopathological and immunohistochemical analysis demonstrated an undifferentiated embryonal sarcoma of the liver. Conclusion: Inferior right hepatic vein-preserving left extended trisectionectomy is a safe and feasible procedure that should be performed by a hepatobiliary team experienced in major complex hepatectomies.

Adherence to a national consensus statement on informed consent: medical students' experience of obtaining informed consent from patients for sensitive examinations.

AIM: To determine whether the guidance from the New Zealand medical programmes' national consensus statement on obtaining informed consent from patients for sensitive examinations are being met, and to explore medical students' experience of obtaining consent. METHOD: A self-reported, online, anonymous questionnaire was developed. Data were collected in the period just after graduation from final year medical students at The University of Auckland in 2019. RESULTS: The response rate was 35% (93/265). Most students reported that they were "not always compliant" with the national consensus statement for obtaining informed consent for almost all sensitive examinations. The main exception was for the female pelvic examination (not in labour) under anaesthesia, where most students reported being "always compliant". We identified factors related to students, supervisors, institution, and the learning context as reasons for lack of compliance. CONCLUSION: Adherence to the national consensus statement on obtaining informed consent for sensitive examinations is unsatisfactory. The medical programme needs to review the reasons for lapses in implementing the policy in practice, to ensure a safe learning environment for patients and our students.

Can gadoxetic acid-enhanced magnetic resonance imaging be used to avoid liver biopsy in patients with nonalcoholic fatty liver disease?

BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a major cause of liver disease worldwide. The diagnosis of nonalcoholic steatohepatitis (NASH), the most severe form of NAFLD, is crucial and has prognostic and therapeutic implications. However, currently this diagnosis is based on liver biopsy and has several limitations. AIM: To evaluate the performance of gadoxetic acid-enhanced magnetic resonance imaging (GA-MRI) in differentiating isolated steatosis from NASH in patients with NAFLD. METHODS: In this prospective study, 56 patients with NAFLD (18 with isolated steatosis and 38 with NASH) underwent GA-MRI. The contrast enhancement index (CEI) was calculated as the rate of increase of the liver-to-muscle signal intensity ratio from before and 20 min after intravenous GA administration. Between-group differences in mean CEI were examined using Student's t test. The area under the receiver operator characteristic curve and the diagnostic performance of gadoxetic acid-enhanced magnetic resonance imaging were evaluated. RESULTS: The mean CEI for all subjects was 1.82 ± 0.19. The mean CEI was significantly lower in patients with NASH than in those with isolated steatosis (P = 0.008). Two CEI cut-off points were used: < 1.66 (94% specificity) to characterize NASH and > 2.00 (89% sensitivity) to characterize isolated steatosis. CEI values between 1.66 and 2.00 indicated liver biopsy, and the procedure could be avoided in 40% of patients with NAFLD. CONCLUSION: GA-MRI is an effective noninvasive method that may be useful for the differentiation of NASH from isolated steatosis, and could help to avoid liver biopsy in patients with NAFLD.

Higher cut-off values of non-invasive methods might be needed to detect moderate-to-severe steatosis in morbid obese patients: a pilot study.

To evaluate the diagnostic value of described thresholds of controlled attenuation parameter (CAP) and biomarker scores for liver steatosis and to evaluate new cut-offs to detect moderate-to-severe steatosis (S2-3) in patients with morbid obesity. In this prospective study, 32 patients with morbid obesity with indications for bariatric surgery (15 women and 17 men, mean age = 36 years, median BMI = 40.2 kg/m2) underwent CAP, magnetic resonance spectroscopy (MRS), three biomarker scores (Steato-ELSA, Fatty Liver Index (FLI), and Hepatic Steatosis Index (HSI)), and liver biopsy. Subjects were divided into an exploratory cohort (reliable CAP and liver biopsy) and a confirmatory cohort (reliable CAP and MRS) to evaluate new thresholds for CAP and biomarker scores to detect S2-3. Receiver operator characteristic (ROC) curves analyses were performed and the optimal cut-off points were identified using the maximal Youden index. A total of 22 patients had CAP measure and liver biopsy (exploratory cohort) and 24 patients had CAP measure with MRS (confirmatory cohort). New cut-offs were identified for detection of S2-3 by the non-invasive tests using liver biopsy as the reference standard (exploratory cohort). Considering the new proposed cut-offs for detection of S2-3 for CAP (≥ 314 dB/m), Steato-ELSA (≥ 0.832), FLI (≥ 96), and HSI (≥ 53), for the exploratory and confirmatory cohorts sensitivities were: 71-75%, 86-81%, 85-81%, and 71-69% and specificities were: 94-89%, 75-63%, 63-63%, and 75-88%, respectively. Higher cut-offs for CAP and biomarker scores may be better to diagnose moderate-to-severe steatosis in patients with morbid obesity.

The performance of M and XL probes of FibroScan for the diagnosis of steatosis and fibrosis on a Brazilian nonalcoholic fatty liver disease cohort.

OBJECTIVES: Recently, controlled attenuation parameter (CAP) was incorporated for XL probe. However, its performance through M and XL probes has been scarcely evaluated in nonalcoholic fatty liver disease (NAFLD). The performance of probes regarding transient elastography by Fibroscan is still under debate. AIM: Compare the performance of CAP and transient elastography in NAFLD patients obtained through XL with M probes using histological analysis as gold standard. METHODS: NAFLD patients underwent liver biopsy and FibroScan/CAP with M and XL probes the same day. C-statistic evaluated CAP performance in the identification of moderate/severe (≥33%) and severe (≥66%) steatosis by both probes and transient elastography performance for identification of significant fibrosis (≥F2). RESULTS: Eighty-one patients (74% female; age 54.2 ± 9.9 years; BMI 32.8 ± 5.2/ BMI ≥ 25 92.6%; 96% metabolic syndrome; 60% diabetes mellitus) were included. Mean CAP with M and XL probes was 314 ± 39 and 325 ± 47 dB/m, respectively. The areas under receiver operating characteristic curves (AUROCs) of the M and XL probes for steatosis detection ≥33% were 0.75 (0.64-0.84) and 0.76 (0.65-0.84) (P = 0.95) and for steatosis ≥66% 0.83 (0.73-0.90) and 0.82 (0.71-0.89) (P = 0.73), respectively, with similar performances for both degrees of steatosis. Regarding transient elastography, AUROCs of M and XL probes for ≥F2 were 0.82 (0.71-0.93) and 0.80 (0.69-0.92) (P = 0.66). CONCLUSION: Performance of M and XL probes is similar for the diagnosis of moderate and severe steatosis and significant fibrosis even on a overweight population with NAFLD.

Qual Guia de Comunicação na Consulta Médica É o Mais Adequado para o Ensino de Habilidades Comunicacionais na Atenção Primária à Saúde Brasileira? / Which Communication Guide for Medical Visits is the Most Appropriate for Teaching Communication Skills in Primary Health Care in Brazil?

RESUMO Introdução O uso de habilidades de comunicação está associado a desfechos positivos na consulta médica e no cuidado à saúde, como melhora da adesão aos tratamentos, da satisfação de médicos e pacientes, e da relação entre eles. Isto é ainda mais significativo na Atenção Primária à Saúde (APS), que é um espaço de cuidado integral de saúde. Uma comunicação efetiva é aquela em que todos os participantes interagem de modo a trocar informações e em que, ao final, todas as partes tenham o mesmo entendimento sobre o problema, acordem sobre as medidas a tomar e se sintam entendidas em suas necessidades. Para que este tipo de comunicação aconteça, o ensino dessas habilidades deve ocorrer de forma adequada e contínua, durante toda a formação médica. Até o momento, não existe um instrumento brasileiro que cumpra esta finalidade. No Brasil, têm-se utilizado guias internacionais para este ensino. No entanto, dos guias mais usados internacionalmente e mais citados na literatura da área, nenhum é completamente adequado à realidade da APS brasileira. Objetivo Comparar quatro instrumentos de habilidades de comunicação frequentemente utilizados, tendo em vista os aspectos que caracterizam a APS nacional. Metodologia Os guias foram descritos, analisados qualitativamente e comparados quanto às seguintes categorias: estrutura do guia, criação do guia, etapas importantes da consulta e foco no médico. Análise: Os instrumentos diferem quanto a facilidade de uso, foco no ensino de APS, discussão de etapas importantes da consulta e foco no médico; todos discutem a construção de planos compartilhados e nenhum tem uma tradução validada para português do Brasil. Conclusão Dos quatro guias estudados, "A Consulta em 7 em Passos" tem o melhor perfil de uso para a APS nacional. No entanto, recomenda-se a criação de um guia brasileiro para estruturar, homogeneizar e facilitar o ensino das habilidades de comunicação nas escolas médicas do País.

ABSTRACT Introduction the use of communication skills is associated with positive outcomes in medical visits and health care, such as better adherence to treatments, satisfaction of doctors and patients and the relationship between them. This is even more significant in Primary Health Care, which is a space of comprehensive health care. An effective communication happens whenever all participants interact to exchange information and, in the end, everyone has the same understanding about the problem, everyone agrees about the actions to be taken and everyone feels they are being understood in their needs. In order for this kind of communication to happen, these skills must be taught appropriately e continually, during the whole medical training. Up until now, there is no Brazilian instrument that fulfills this purpose. In Brazil, international guides are being used to achieve that. However, amongst the most internationally used guides and those most cited in specific literature, none is completely suitable to Brazil's reality. Objective To compare four frequently used communications skills instruments, under the perspective of Brazilian Primary Care characteristics. Methodology The guides were described, qualitatively analyzed and compared according to the following categories: guide structure, guide creation, important steps of the visit and focus on the doctor. Analysis: The instruments differ in easiness of use, focus in Primary Care teaching, discussion of important steps of the visit and focus on the doctor. They all discuss the construction of shared plans and none has a validated translation to Brazilian Portuguese. Conclusion "A Consulta em 7 Passos" has the most suitable profile for Brazil's Primary Care, among the studied guides. However, the creation of a Brazilian guide is recommended to help structure, homogenize and facilitate the teaching of communication skills in Brazil's medical schools.

Preperitoneal fat as a non-invasive marker of increased risk of severe non-alcoholic fatty liver disease in patients with type 2 diabetes.

BACKGROUND AND AIM: Fat distribution may have prognostic value in the evaluation of non-alcoholic fatty liver disease. This study was conducted to evaluate associations of magnetic resonance imaging-measured abdominal fat areas with steatosis, steatohepatitis, and fibrosis, assessed histopathologically, in patients with type 2 diabetes. METHODS: This prospective study included 66 patients with type 2 diabetes (12 males, 54 females, age 26-68 years), without chronic liver disease of other causes. Axial dual-echo magnetic resonance images were acquired. Visceral, subcutaneous, and preperitoneal fat areas were measured using Osirix software. Liver biopsy specimens were obtained from all patients and examined histopathologically to evaluate steatosis, steatohepatitis, and fibrosis. Linear (for steatosis) and logistic (for steatohepatitis and fibrosis) regression models were fitted for the outcomes. R2 was used as a measure of how much model variance the predictors explained and to compare different predictors of the same outcome. RESULTS: Visceral and preperitoneal fat areas correlated well with histopathologically determined liver steatosis grade (both P = 0.004) and liver fibrosis (P = 0.008 and P = 0.037, respectively). All fat areas correlated well with steatohepatitis (P ≤ 0.002). Preperitoneal and visceral fat areas were the best predictors of steatohepatitis (R2 = 0.379) and fibrosis (R2 = 0.181), respectively. CONCLUSIONS: Visceral fat area was the best predictor of fibrosis in patients with type 2 diabetes. Preperitoneal fat area was the best predictor of steatohepatitis and is a potential new non-invasive marker for use in the screening of these patients to detect more aggressive forms of non-alcoholic fatty liver disease.

Intravoxel Incoherent Motion Diffusion Weighted MR Imaging at 3.0 T: Assessment of Steatohepatitis and Fibrosis Compared with Liver Biopsy in Type 2 Diabetic Patients.

OBJECTIVE: To evaluate the capability of intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) to assess steatohepatitis and fibrosis determined by histopathology in type 2 diabetic patients. METHODS: Fifty-nine type 2 diabetic patients (49 women, 10 men; mean age, 54 ± 9 years) were submitted to liver biopsy for the evaluation of non-alcoholic fatty liver disease (NAFLD) and underwent DWI on a 3.0T MR system using 10 b values. Institutional approval and patient consent were obtained. Pure molecular-based (D), perfusion-related (D*), and vascular fraction (f) were calculated using a double exponential model and least squares curve fitting. D, D*, and f were compared between patients with and without steatohepatitis and between patients with and without fibrosis. The variables were compared by using the Ranksum test and Student t-test. RESULTS: Steatohepatitis was observed in 22 patients and fibrosis in 16 patients. A lower D median (0.70 s/mm2 vs. 0.83 s/mm2, p<0.05) and a lower D* median (34.39 s/mm2 vs. 45.23 s/mm2, p<0.05) were observed among those with steatohepatitis. A lower D median (0.70 s/mm2 vs. 0.82 s/mm2, p<0.05) and a lower D* median (35.01 s/mm2 vs. 44.76 s/mm2, p=0.05) were also observed among those with fibrosis. CONCLUSION: IVIM-DWI has the potential to aid in the characterization of steatohepatitis and fibrosis.

Is MR spectroscopy really the best MR-based method for the evaluation of fatty liver in diabetic patients in clinical practice?

OBJECTIVE: To investigate if magnetic resonance spectroscopy (MRS) is the best Magnetic Resonance (MR)-based method when compared to gradient-echo magnetic resonance imaging (MRI) for the detection and quantification of liver steatosis in diabetic patients in the clinical practice using liver biopsy as the reference standard, and to assess the influence of steatohepatitis and fibrosis on liver fat quantification. METHODS: Institutional approval and patient consent were obtained for this prospective study. Seventy-three patients with type 2 diabetes (60 women and 13 men; mean age, 54 ± 9 years) underwent MRI and MRS at 3.0 T. The liver fat fraction was calculated from triple- and multi-echo gradient-echo sequences, and MRS data. Liver specimens were obtained in all patients. The accuracy for liver fat detection was estimated by receiver operator characteristic (ROC) analysis, and the correlation between fat quantification by imaging and histolopathology was analyzed by Spearman's correlation coefficients. RESULTS: The prevalence of hepatic steatosis was 92%. All gradient-echo MRI and MRS findings strongly correlated with biopsy findings (triple-echo, rho = 0.819; multi-echo, rho = 0.773; MRS, rho = 0.767). Areas under the ROC curves to detect mild, moderate, and severe steatosis were: triple-echo sequences, 0.961, 0.975, and 0.962; multi-echo sequences, 0.878, 0.979, and 0.961; and MRS, 0.981, 0.980, and 0.954. The thresholds for mild, moderate, and severe steatosis were: triple-echo sequences, 4.09, 9.34, and 12.34, multi-echo sequences, 7.53, 11.75, and 15.08, and MRS, 1.71, 11.69, and 14.91. Quantification was not significantly influenced by steatohepatitis or fibrosis. CONCLUSIONS: Liver fat quantification by MR methods strongly correlates with histopathology. Due to the wide availability and easier post-processing, gradient-echo sequences may represent the best imaging method for the detection and quantification of liver fat fraction in diabetic patients in the clinical practice.

Effects of TachoSil and 5-fluorouracil on colonic anastomotic healing.

BACKGROUND: The administration of intraperitoneal (IP) 5-fluorouracil (5-FU) during the early postoperative period after cytoreductive surgery can decrease local cancer recurrence but may also cause impairment of the anastomotic healing. This study examined the effects of the use of this therapy and of the anastomotic sealing with TachoSil, a fibrin-thrombin coated sealant (FTCS), on the healing of colon anastomoses. MATERIALS AND METHODS: Forty male rats were divided into four groups (1-4, 10 rats each) that underwent transection and anastomosis of the left colon. The anastomoses were covered with FTCS in groups 2 and 4. Saline solution (2 mL/d-groups 1 and 2) or 5-FU (20 mg/kg/d; groups 3 and 4) was administered IP once daily for 3 d. Bursting pressure (BP) was recorded, and the anastomoses were examined macroscopically and graded histologically. RESULTS: The relative weight loss was significantly higher in group 3 than in the other groups (P = 0.0004). Anastomotic dehiscence, postoperative adhesion formation, perianastomotic collections, and preanastomotic dilatation did not differ significantly among groups. BP was significantly lower in group 3 compared with all other groups (P = 0.001). Neoangiogenesis was significantly lower in group 3 compared with groups 1 and 2 (P = 0.05). Fibroblastic activity was significantly higher in group 1 compared with group 3 (P = 0.035). Inflammatory cell infiltration and collagen deposition did not differ significantly among groups. CONCLUSIONS: Our results shown that the early postoperative IP chemotherapy with 5-FU impaired the healing of colon anastomoses. However, anastomotic sealing with FTCS reversed some of the negative effects of this therapy.

[Comparison of fetal heart rate patterns in the second and third trimesters of pregnancy]. / Comparação dos padrões da frequência cardíaca fetal no segundo e terceiro trimestres da gestação.

PURPOSE: to compare the patterns of fetal heart rate (FHR) in the second and third trimesters of pregnancy. METHODS: a prospective and comparative study performed between January 2008 and July 2009. The inclusion criteria were: singleton pregnancy, live fetus, pregnant women without clinical or obstetrical complications, no fetal malformation, gestational age between 24 and 27 weeks (2nd trimester - 2T) or between 36 and 40 weeks (3rd trimester - 3T). Computerized cardiotocography (System 8002 - Sonicaid) was performed for 30 minutes and the fetal biophysical profile was obtained. System 8002 analyzes the FHR tracings for periods of 3.75 seconds (1/16 minutes). During each period, the mean duration of the time intervals between successive fetal heart beats is determined in milliseconds (ms); the mean FHR and also the differences between adjacent periods are calculated for each period. The parameters included: basal FHR, FHR accelerations, duration of high variation episodes, duration of low variation episodes and short-term variation. The dataset was analyzed by the Student t test, chi-square test and Fisher's exact test. Statistical significance was set at p<0.05. RESULTS: eighteen pregnancies on the second trimester were compared to 25 pregnancies on the third trimester. There was a significant difference in the FHR parameters evaluated by computerized cardiotocography between the 2T and 3T groups, regarding the following results: mean basal FHR (mean, 143.8 bpm versus 134.0 bpm, p=0.009), mean number of transitory FHR accelerations > 10 bpm (3.7 bpm versus 8.4 bpm, p <0.001) and >15 bpm (mean, 0.9 bpm versus 5.4 bpm, p <0.001), mean duration of high variation episodes (8.4 min versus 15.4 min, p=0.008) and mean short - term variation (8.0 ms versus 10.9 ms, p=0.01). The fetal biophysical profile showed normal results in all pregnancies. CONCLUSION: the present study shows significant differences in the FHR characteristics when the 2nd and 3rd trimesters of pregnancy are compared and confirms the influence of autonomic nervous system maturation on FHR regulation.

Tumor fibroso de pleura / Solitary fibrous tumors of the pleura

Neste artigo apresentamos um caso de tumor fibroso solitário da pleura, em um homem de 49 anos, cujo diagnóstico foi feito em nosso hospital, anos após o surgimento dos primeiros sintomas e sinais na radiografia do tórax. Após descrição do caso, fizemos uma breve revisão sobre aspectos mais importantes deste raro tumor, visando auxiliar no diagnóstico diferencial das neoplasias torácicas.

Linfoma pulmonar / Pulmonary lymphoma

Linfomas não-Hodgkin constituem um grupo de doenças linfoproliferativas malignas com diferentes padrões de comportamento, tratamento e prognóstico. Podem acometer as estruturas intratorácicas, particularmente os linfonodos mediastinais e o parênquima pulmonar, em alguma fase docurso da doença. Os autores descrevem um caso de linfoma não-Hodgkin com manifestação atípica nos pulmões e discutem o diagnóstico diferencial.

Pneumonia tuberculosa / Tuberculous pneumonia

Os achados clínicos da tuberculose variam amplamente e dependem de um número de fatores, incluindo a eficácia das defesas do hospedeiro em conter a população bacilar. Os autores descrevem um caso de pneumonia tuberculosa em um homem com 46 anos de idade que evoluiu para insuficiência respiratória aguda e morreu cinco dias após a internação. O diagnóstico definitivo foi dado na autópsia