Effects of bariatric surgery on renal function: a retrospective cohort study comparing one-year outcomes between one-anastomosis gastric bypass and Roux-en-Y gastric bypass.

Background: Evidence on the effect of one-anastomosis gastric bypass (OAGB) on renal function is limited.

Objective: To compare the evolution of estimated renal function observed 1 year after OAGB and Roux-en-Y gastric bypass (RYGB) in individuals with obesity.

Design And Setting: Observational, analytical, and retrospective cohort study.

Association of Histopathological and Biochemical Aspects of NAFLD With the Severity of Liver Fibrosis in Individuals With Obesity: Cross-sectional Study.

Background: Given the importance of fibrosis in the progression of non-alcoholic fatty liver disease (NAFLD), identifying biochemical and histopathological aspects associated with its severity is important to determine the course of disease in high-risk populations.

Objectives: The study aims to investigate correlations between biochemical and histopathological variables associated with the occurrence and severity of NAFLD-related liver fibrosis in individuals with obesity.

Methods: This is a cross-sectional study which enrolled 171 individuals who underwent bariatric surgery at a tertiary university hospital.

Identification of Predictors of Non-alcoholic Steatohepatitis and Its Severity in Individuals Undergoing Bariatric Surgery.

Background: As obesity reached epidemic proportions, non-alcoholic fatty liver disease (NAFLD) also had a worrisome parallel increase. The non-invasive differentiation of non-alcoholic steatohepatitis (NASH) from uncomplicated NAFLD remains an important challenge in current clinical practice.

Objective: To identify predictors of the occurrence and severity of NAFLD and NASH.

Impact of pre-operative weight loss on non-alcoholic fatty liver disease histopathology and insulin resistance in individuals undergoing bariatric surgery: a propensity matched cross-sectional comparison.

Background: The effect of weight loss (WL) on histopathological aspects of non-alcoholic fatty liver disease (NAFLD) may provide further insights into the dynamics of hepatic recovery after WL.

Objective: To analyze the effects of pre-operative WL on insulin resistance- and NAFLD-related histology in individuals undergoing bariatric surgery (BS) with or without pre-operative WL.

Design And Setting: A matched cross-sectional study was conducted at a public university hospital and a private clinic in Campinas, Brazil.

DO HELICOBACTER PYLORI INFECTION AND ERADICATION THERAPY STATUS INFLUENCE WEIGHT LOSS OUTCOMES AND ENDOSCOPIC FINDINGS AFTER ROUX-EN-Y GASTRIC BYPASS?A HISTORICAL COHORT STUDY.

Background: Currently, there is conflicting evidence linking Helicobacter pylori (HP) infection with weight loss and endoscopic findings after Roux-en-Y gastric bypass (RYGB).

Objective: To identify correlations between HP infection and its eradication with weight loss and endoscopic findings after RYGB.

Methods: This is an observational retrospective cohort study based on a prospectively collected database of individuals who underwent RYGB from 2018-2019 at a tertiary university hospital.

Is Helicobacter pylori infection associated with non-alcoholic fatty liver disease in individuals undergoing bariatric surgery? Cross-sectional study.

Background: A possible direct link between nonalcoholic fatty liver disease (NAFLD) and Helicobacter pylori (H. pylori) infection has recently emerged.

Objective: This study aimed to analyze associations between the presence of histologically demonstrated NAFLD aspects with H.

Application of Scores Assessing Histological Activity and Estimated Long-Term Risk Analysis of Hepatic Decompensation of Non-Alcoholic Fatty Liver Disease in Individuals Undergoing Bariatric Surgery.

Background: Histological scores can estimate disease staging, allowing a standardization of the assessment of non-alcoholic fatty liver disease (NAFLD). The prediction of risk of NAFLD progression is relevant to allow the planning of interventions.

Objective: To analyze the application of the Iowa NAFLD decompensation risk score, the NAFLD activity score (NAS), and steatosis-activity-fibrosis score (SAF) and to assess correlations between these scores.

Microvesicular Steatosis in Individuals with Obesity: a Histological Marker of Non-alcoholic Fatty Liver Disease Severity.

Background: In non-alcoholic fatty liver disease (NAFLD), steatosis can manifest through two distinct forms: macrovesicular (macroS) and microvesicular (microS).

Objective: To investigate the prevalence of microS and its association with biochemical parameters and NAFLD-related histological findings in individuals with obesity.

Methods: This is an observational retrospective cross-sectional study, enrolling individuals who underwent bariatric surgery and liver biopsy at a university hospital.

Endoscopic and histopathological assessment of individuals undergoing one anastomosis gastric bypass: a 2-year follow-up.

Background: There is much debate over the occurrence of biliary reflux to the gastric pouch after one anastomosis gastric bypass (OAGB) and its potential risks.

Objective: To assess endoscopic and histopathological findings following a standardized protocol of biopsy collection two years after OAGB.

Methods: A historical cohort study was conducted, based on a prospectively collected database, which involved 39 participants who underwent OAGB.

Trajectory of NAFLD characteristics after Roux-en-Y gastric bypass: a five-year historical cohort study.

Background: The long-term effects of bariatric surgery on the course of non-alcoholic fatty hepatopathy (NAFLD) are not fully understood.

Objective: To analyze the evolution of NAFLD characteristics through noninvasive markers after Roux-en-Y gastric bypass (RYGB) over a five-year period.

Design And Setting: Historical cohort study; tertiary-level university hospital.

Relationships of hepatic histopathological findings and bile microbiological aspects with bile duct injury repair surgical outcomes: A historical cohort.

Backgrounds/aims: To analyze relationships of hepatic histopathological findings and bile microbiological profiles with perioperative outcomes and risk of late biliary stricture in individuals undergoing surgical bile duct injury (BDI) repair.

Methods: A historical cohort study was carried out at a tertiary university hospital. Fifty-six individuals who underwent surgical BDI repair from 2014-2018 with a minimal follow-up of 24 months were enrolled.

PRE-OPERATIVE SCREENING OF HELICOBACTER PYLORI IN BARIATRIC PATIENTS: IS HISTOPATHOLOGICAL ANALYSIS NECESSARY?

Background: Helicobacter pylori infection has been reported to lead to post-operative complications after bariatric surgery (BS), especially marginal ulcers. The optimal method for pre-operative screening is yet to be determined.

Objective: To analyze the diagnostic accuracy of the endoscopic urease test for the detection of H.

SHOULD ROUTINE LIVER BIOPSY BE CONSIDERED IN BARIATRIC SURGICAL PRACTICE? AN ANALYSIS OF THE LIMITATIONS OF NON-INVASIVE NAFLD MARKERS.

Background: Non-invasive markers are useful and practical tools for assessing non-alcoholic fatty liver disease (NAFLD), but liver biopsy remains the gold-standard method. Liver biopsy can be easily obtained on individuals undergoing bariatric surgery, but there is no ultimate evidence on the relationship between costs, risks and benefits of its systematic performance.

Objective: To compare the diagnostic accuracy of non-invasive methods with liver biopsy for detection and staging of NAFLD in obese individuals undergoing bariatric surgery.

Is there a link between non-alcoholic fatty liver disease aspects and pancreatic cancer? Results of a case-matched study.

Background And Aims: An association between non-alcoholic fatty liver disease (NAFLD) and pancreatic ductal adenocarcinoma (PDAC) has been previously suggested. This study aims at investigating this association and at identifying potential links between variables of the NAFLD spectrum and PDAC.

Methods: A cross-sectional case-matched analytical and comparative study was carried out to analyze patients undergoing surgical resection of PDAC and compare them to a control group of individuals undergoing cholecystectomy at a public tertiary teaching hospital, matched by sex, age and BMI.

Effect of transient obstructive cholestasis on liver histology: a cross-sectional study.

Background: The role of transient obstructive cholestasis on liver histology remains undetermined.

Objective: To investigate whether transient cholestasis impairs liver histology.

Design And Setting: Cross-sectional study at a public university hospital (UNICAMP), Brazil.

Correlation Between Anthropometric Measurements and Non-alcoholic Fatty Liver Disease in Individuals With Obesity Undergoing Bariatric Surgery: Cross-Sectional Study.

Background: We hypothesize that non-alcoholic fatty liver disease (NAFLD) may be significantly associated with waist circumference (WC), neck circumference (NC), hip circumference (HC), and waist-to-hip ratio (WHR).

Objectives: To analyze correlations between anthropometric parameters and the occurrence and intensity of NAFLD aspects assessed by histopathological examination in individuals undergoing bariatric surgery.

Methods: This is a cross-sectional study carried out in a tertiary university hospital.

Revisional surgery in severe nutritional complications after bariatric surgical procedures: report of four cases from a single institution and review of the literature.

Introduction: bariatric surgery is currently the only treatment that leads to long-term and sustained weight loss and decreased morbidity and mortality in morbidly obese individuals. Roux-en-Y bypass causes weight loss by restricting food intake associated with reduced intestinal absorption, in addition to multiple endocrine and satiogenic effects. Biliopancreatic diversion promotes weight loss mainly due to poor absorption of the nutrients ingested.

Tubulovillous adenoma of the duodenal papilla: radiological-endoscopic and anatomopathological correlation in the surgical proposal.

Tubulovillous adenomas of the duodenal ampulla are rare neoplasms. The present report describes a case with radiological-endoscopic and pathological correlation in which the patient underwent duodenal pancreatectomy with good postoperative progression. With advanced imaging methods, especially magnetic resonance and endoscopic ultrasound, locoregional aspects and extraluminal, lymphovascular, and metastatic invasion have been increasingly discussed as contributors to therapeutic decision making.

Prevalence and Factors Associated with Hepatic Iron Overload in Obese Individuals Undergoing Bariatric Surgery: a Cross-Sectional Study.

Background: Slight to moderate hepatic iron overload (HIO) can be found in cases of liver disease, including non-alcoholic fatty liver disease (NAFLD), but the mechanism is not completely understood, as well as its relationship with obesity.

Objective: To determine the prevalence of HIO assessed through histopathological examination in obese individuals undergoing bariatric surgery and to identify correlations between this condition and demographic, anthropometric, clinical, laboratory, and NAFLD-related aspects.

Methods: This is a cross-sectional study which enrolled individuals undergoing bariatric surgery from January 2018 to February 2019 at a tertiary university hospital.

Histological grading evaluation of non-alcoholic fatty liver disease after bariatric surgery: a retrospective and longitudinal observational cohort study.

Non-alcoholic fatty liver disease (NAFLD) is a chronic disease with several degrees of histological features which may progress to cirrhosis. Obesity is an important risk factor and although NAFLD has no specific pharmacological treatment, bariatric surgery has been associated with NAFLD regression in severely obese patients. However, few longitudinal histological studies support this finding.