Single-Center Review of Appropriateness and Utilization of Upper Endoscopy in Dyspepsia in the United States.

BACKGROUND: We compared real-world practice of dyspepsia management to the new American College of Gastroenterology (ACG)/Canadian Association of Gastroenterology (CAG) guidelines 2017. METHODS: We conducted a retrospective, observational study using administrative data to include patients undergoing esophagogastroduodenoscopy (EGD) for dyspepsia. RESULTS: Out of 122 EGDs, only 30 (24.5%) were deemed appropriate per guidelines. Only 13 (14.1%) patients had undergone both Helicobacter pylori (H. pylori) test and treat and adequate proton pump inhibitor (PPI) before undergoing endoscopy. Nineteen (15.5%) patients had alarm symptoms (weight loss, melena and early satiety). Positivity rate of H. pylori was 36.3%, but only half completed treatment. Twenty-six patients (21.3%) had abnormalities on endoscopy, most commonly gastritis. There were no cases of gastric/esophageal cancer. CONCLUSIONS: The rate of inappropriate upper gastrointestinal endoscopy is higher than the existing literature, likely because of the stricter use of EGD in patients < 60 years. Only one in eight patients underwent the recommended workup before undergoing endoscopy.

Emphysematous gastritis: a case series and review of the current trend favoring conservative management.

Emphysematous gastritis [EG] is a rare condition associated with a high mortality rate which involves the invasion of gas-forming organisms into the gastric mucosa. Risk factors include mucosal defects such as gastric ulceration as well as systemic illnesses such as diabetes. Clinical presentation includes abdominal pain as well as signs of sepsis. Air in the gastric wall and portal venous system on abdominal imaging are characteristic radiographic findings. The ideal treatment of the condition is unclear, given its rarity. Cases have typically involved either surgical options or conservative management with bowel rest and intravenous antibiotics. We report on two patients treated successfully at our institution with conservative management and a review of the current knowledge in this area. Recent case literature shows a trend towards conservative management for emphysematous gastritis with several successfully managed cases, suggesting that patients can avoid surgery in the majority of cases.

Giardia lamblia Diagnosed Incidentally by Duodenal Biopsy.

Giardia lamblia (also referred to as Giardia intestinalis and Giardia duodenalis) is the most common intestinal parasite in the world, affecting approximately 200 million people annually. Symptoms of Giardia include foul-smelling diarrhea, abdominal cramping, bloating, gas, and nausea. Although usually self-limiting, Giardia can progress to dehydration, malnutrition, and failure to thrive, especially in immunocompromised individuals. Early diagnosis and treatment is imperative to prevent and control infection of Giardia. Infectious Disease Society of America diagnostic guidelines recommend obtaining stool studies to diagnose Giardia; when stool studies are negative but suspicion remains high, duodenal aspirate microscopy is the only alternative diagnostic strategy suggested. We report a patient diagnosed incidentally with Giardia from a duodenal biopsy specimen obtained during a workup for a gastrointestinal bleed. There are limited cases of Giardia diagnosed by duodenal biopsy reported in the literature. We review studies that suggest duodenal biopsy can be a very sensitive strategy for the diagnosis of Giardia.

Abrikossoff Tumor (Granular Cell Tumor) Presenting in the Esophagus.

Abrikossoff tumors, also known as granular cell tumors, are rare and often benign soft tissue neoplasms of Schwann cell origin. The vast majority of cases are reported in the skin and subcutaneous tissue. Only 0.001% of Abrikossoff tumors are estimated to occur in the esophagus. We report a rare case of Abrikossoff tumor of the esophagus in a patient who underwent esophagogastroduodenoscopy for abdominal pain and nausea.

Readmissions Rates After Myocardial Infarction for Gastrointestinal Bleeding: A National Perspective.

BACKGROUND AND AIMS: Gastrointestinal (GI) bleeding is one most common complications of acute myocardial infarction (AMI). We aimed to determine the incidence, in-hospital outcomes, associated healthcare burden and predictors of GI bleeding within 30 days after AMI. METHODS: Data were extracted from Nationwide Readmission Database 2010-2014. Patients were included if they had a primary diagnosis of ST or non-ST elevation myocardial infarction. Exclusion criteria were admissioned in December, aged less than 18 years and a diagnosis of type-2 MI. The primary outcome was 30-day readmission with upper or lower GI bleeding. Secondary outcomes were in-hospital mortality, etiology of bleeding, in-hospital complications, procedures, length of stay, and total hospitalization charges. Independent predictors of readmission were identified using multivariate logistic regression analysis. RESULTS: Out of the 3,520,241 patients discharged with ACS, 10,018 (0.3%) were readmitted with GI bleeding within 30 days of discharge. 60% had lower GI bleeding. Most common sources suspected were GI cancers in 17% and hemorrhoidal bleeding in 10%. In hospital mortality rate for readmission was 3.6%. Independent predictors of readmission were age, Charlson comorbidity score, history of chronic kidney disease, GI tumor, inflammatory bowel disease and artificial heart valve. Type of treatment for AMI had no impact on readmission. Patients readmitted had higher rates of shock (adjusted odds ratio, 1.48, 95% CI 1.01-3.72). CONCLUSIONS: In the first nationwide study, 30-day incidence of GI bleeding after AMI is 0.3%. GI bleeding complicating AMI carries a substantial in-hospital mortality and cost of care.

Perturbations in ataxia telangiectasia mutant signaling pathways after drug-induced acute liver failure and their reversal during rescue of animals by cell therapy.

Superior insights into molecular mechanisms of liver failure, which are not fully understood, will help strategies for inducing liver regeneration. We examined hepatotoxic mechanisms in mice homozygous for the severe combined immune deficiency mutation in the protein kinase, DNA-activated, catalytic polypeptide. Mice were treated with rifampicin, phenytoin, and monocrotaline. The ensuing acute liver failure was characterized by serological, histological, and mRNA studies. Subsequently, we studied whether transplantation of hepatocytes could rescue animals with liver failure. We found extensive liver damage in these animals, with mortality over several days. The expression of multiple hepatic genes was rapidly altered, including those representing pathways in oxidative/metabolic stress, inflammation, DNA damage-repair, and ataxia telangiectasia mutant (Atm) signaling pathways. This led to liver cell growth arrest involving cyclin-dependent kinase inhibitor 1A. Transplantation of hepatocytes with microcarriers in the peritoneal cavity efficiently rescued animals with liver failure. Molecular abnormalities rapidly reversed, including in hepatic Atm and downstream signaling pathways; and residual hepatocytes overcame cyclin-dependent kinase inhibitor 1A-induced cell growth arrest. Reseeding of the liver with transplanted hepatocytes was not required for rescue because native hepatocytes overcame cell growth-arrest to regenerate the liver. This likely resulted from paracrine signaling from hepatocytes in the peritoneal cavity. We concluded that Atm signaling played critical roles in the pathological features of liver failure. These studies should help redirect examination of pathophysiologic and therapeutic mechanisms in liver failure.

Lipodystrophy in HIV patients: its challenges and management approaches.

HIV-associated lipodystrophy is a term used to describe a constellation of body composition (lipoatrophy and lipohypertrophy) and metabolic (dyslipidemia and insulin resistance) alterations that accompany highly active antiretroviral therapy. These changes, which resemble metabolic syndrome, have been associated with a variety of adverse outcomes including accelerated cardiovascular disease. The body composition and metabolic changes appear to cluster in HIV infection, although they are distinct alterations and do not necessarily coexist. Epidemiological studies have demonstrated multiple pathogenic influences associated with host, disease, and treatment-related factors. The adverse treatment effects were more prominent in early regimens; continued drug development has led to the application of metabolically safer regimens with equal or greater potency than the regimens being replaced. Disease-related factors include HIV infection as well as inflammation, immune activation, and immune depletion. The body composition changes promote anxiety and depression in patients and may affect treatment adherence. Treatment of dyslipidemia and alterations in glucose metabolism is the same as in non-HIV-infected individuals. Lipoatrophy is managed by strategic choice of antivirals or by antiviral switching, and in some cases by plastic/reconstructive surgery. Lipohypertrophy has been managed mainly by lifestyle modification, ie, a hypocaloric diet and increased exercise. A growth hormone releasing factor, which reduces central fat, has recently become available for clinical use.

Mirizzi syndrome.

Mirizzi syndrome is an important complication of gallstone disease. If not recognized preoperatively, it can result in significant morbidity and mortality. Preoperative diagnosis may be difficult despite the availability of multiple imaging modalities. Ultrasonography (US), CT, and magnetic resonance cholangiopancreatography (MRCP) are common initial tests for suspected Mirizzi syndrome. Typical findings on US suggestive of Mirizzi syndrome are a shrunken gallbladder, impacted stone(s) in the cystic duct, a dilated intrahepatic tree, and common hepatic duct with a normal-sized common bile duct. The main role of CT is to differentiate Mirizzi syndrome from a malignancy in the area of porta hepatis or in the liver. MRI and MRCP are increasingly playing an important role and have the additional advantage of showing the extent of inflammation around the gallbladder that can help in the differentiation of Mirizzi syndrome from other gallbladder pathologies such as gallbladder malignancy. Endoscopic retrograde cholangiopancreatography (ERCP) is the gold standard in the diagnosis of Mirizzi syndrome. It delineates the cause, level, and extent of biliary obstruction, as well as ductal abnormalities, including fistula. ERCP also offers a variety of therapeutic options, such as stone extraction and biliary stent placement. Percutaneous cholangiogram can provide information similar to ERCP; however, ERCP has an additional advantage of identifying a low-lying cystic duct that may be missed on percutaneous cholangiogram. Wire-guided intraductal US can provide high-resolution images of the biliary tract and adjacent structures. Treatment is primarily surgical. Open surgery is the current standard for managing patients with Mirizzi syndrome. Good short- and long-term results with low mortality and morbidity have been reported with open surgical management. Laparoscopic management is contraindicated in many patients because of the increased risk of morbidity and mortality associated with this approach. Endoscopic treatment may serve as an alternative in patients who are poor surgical candidates, such as elderly patients or those with multiple comorbidities. Endoscopic treatment also can serve as a temporizing measure to provide biliary drainage in preparation for an elective surgery.

Fruit and vegetable consumption and colorectal adenomas in the Nurses' Health Study.

Consumption of fruits and vegetables may confer protection from colorectal adenomas, but the limited observational and interventional evidence is inconclusive. We examined the association between fruit and vegetable consumption and the prevalence and incidence of adenomas of the distal colon and rectum in the Nurses' Health Study (NHS). We used data from 34,467 women in the NHS who had undergone colonoscopy or sigmoidoscopy during follow-up between 1980 and 1998. Consumption of fruits and vegetables was assessed in 1980, 1984, 1986, 1990, and 1994 using a semiquantitative food frequency questionnaire; 1,720 prevalent cases of adenoma of the distal colon and rectum were diagnosed between 1980 and 1998. Frequent consumption of fruit was inversely related to the risk of being diagnosed with polyps, whereas little association was found for vegetable consumption. Women who reported consuming five or more servings of fruit a day had an odds ratio (OR) of 0.60 [95% confidence interval (95% CI), 0.44-0.81] for developing colorectal adenomas compared with women who consumed only one or fewer servings of fruit per day, after adjustment for relevant covariates (P(trend) = 0.001). The respective OR for vegetable consumption was 0.82 (95% CI, 0.65-1.05; P(trend) = 0.1). Women who consumed four or more servings of legumes per week had a lower incidence of colorectal adenomas than women who reported consuming one serving per week or less (OR, 0.67; 95% CI, 0.51-0.90; P(trend) = 0.005). Frequent consumption of fruit may reduce the risk of colorectal adenomas.