P066 Real-World Experience of Ustekinumab in Crohn's Disease Patients With Prior Anti-TNF Therapy at a Tertiary Care Hospital.

BACKGROUND: Ustekinumab (UST) is a monoclonal antibody against the p40 subunit of IL-12/23. It is approved for the treatment of moderate to severe Crohn's disease (CD) and Ulcerative Colitis. We performed a retrospective study to demonstrate the efficacy and outcomes of UST in CD patients who received prior anti-TNF therapies. METHODS: We collected a list of all patients who received UST until May 2021. In addition, the list was screened for patients who were on anti-TNFs for treatment of CD in the past. Data was collected for patient demographics, disease characteristics, comorbidities, disease phenotype, age of initiation of UST, prior biologic therapy, time since last biologic therapy, concomitant use of steroids or immunomodulator, inflammatory markers, induction of remission, deep remission. Chi-square tests were used for statistical analysis. RESULTS: We identified 34 patients (59% females) with CD on UST who failed at least one anti-TNFs before induction with UST. Clinical remission was documented in 70.5% of patients. 29 percent of patients who achieved clinical remission were on concomitant steroids or immunomodulators at the time of induction of remission along with UST. Fifty percent of patients had a fistulizing disease, of which 70% achieved clinical remission with UST. C-reactive protein (CRP) was reported in 70 percent of patients. Mean CRP prior to initiation of UST was 2.4. CRP trended down to 1.98 (p = 0.079, 95% CI: -0.064-1.08). Eighteen percent of patients had fecal calprotectin reported. Mean fecal calprotectin before initiation of UST was 386, and it trended down 175 while on UST (p = 0.148, 95% CI: -106.25-528.46). CONCLUSION: Our study demonstrates that remission rates in CD patients who have failed prior anti-TNF therapy are high, including for patients with perianal disease. In patients with fistulizing CD, we suggest using UST for higher rates of remission after induction. We also found that for fecal calprotectin, although an excellent surrogate of colon inflammation, compliance amongst patients remains low.

Rehospitalization, Treatment, and Resource Use After Inpatient Admission for Achalasia in the USA.

INTRODUCTION: Readmission for achalasia treatment is associated with significant morbidity and cost. Factors predictive of readmission would be useful in identifying patients at risk. METHODS: We performed a retrospective study using the Nationwide Readmission Database for the year 2016 and 2017. We collected data on hospital readmissions of 17,848 adults who were hospitalized for achalasia and discharged. The 30-day readmission rate as well as the primary cause, mortality rate, in-hospital adverse events, and total hospitalization charges were examined. A cox multivariate regression model was used to identify independent risk factors for 30-day readmission, including the surgical or endoscopic treatment used during the index admission. RESULTS: From 2016 to 2017, the 30-day readmission rate for index admission with achalasia was 15.2%. Of these 15.2%, 34% were readmitted with persistent symptoms of achalasia or treatment-related complications. Older age, higher comorbidity index, possessing private insurance, and those with either pneumatic balloon dilation or no endoscopic/surgical treatment showed higher odds of readmission on multivariate analysis. Those treated with laparoscopic Heller myotomy (LHM) or peroral endoscopic myotomy (POEM) showed lower odds of readmission. There was no difference in rates of readmission between those undergoing POEM or LHM, but mortality rate for readmission was significantly higher for the LHM group. The in-hospital mortality rate and length of stay were significantly higher for readmissions (p < 0.01) than the index admissions. CONCLUSION: Three in 20 patients admitted with achalasia are likely to be readmitted within 30 days of their initial hospitalization, a number which can be higher in untreated patients and in those with multiple comorbidities. Rehospitalizations bear a higher mortality rate than the initial admission and present a burden to the healthcare system.

cAMP-independent signal pathways stimulate hyphal morphogenesis in Candida albicans.

The fungal pathogen Candida albicans can transition from budding to hyphal growth, which promotes biofilm formation and invasive growth into tissues. Stimulation of adenylyl cyclase to form cAMP induces hyphal morphogenesis. The failure of cells lacking adenylyl cyclase (cyr1Δ) to form hyphae has suggested that cAMP signaling is essential for hyphal growth. However, cyr1Δ mutants also grow slowly and have defects in morphogenesis, making it unclear whether hyphal inducers must stimulate cAMP, or if normal basal levels of cAMP are required to maintain cellular health needed for hyphal growth. Interestingly, supplementation of cyr1Δ cells with low levels of cAMP enabled them to form hyphae in response to the inducer N-acetylglucosamine (GlcNAc), suggesting that a basal level of cAMP is sufficient for stimulation. Furthermore, we isolated faster-growing cyr1Δ pseudorevertant strains that can be induced to form hyphae even though they lack cAMP. The pseudorevertant strains were not induced by CO2 , consistent with reports that CO2 directly stimulates adenylyl cyclase. Mutational analysis showed that induction of hyphae in a pseudorevertant strain was independent of RAS1, but was dependent on the EFG1 transcription factor that acts downstream of protein kinase A. Thus, cAMP-independent signals contribute to the induction of hyphal responses.

Gastric Anisakiasis Masquerading as Gastroesophageal Reflux Disease.

Anisakiasis of the gastrointestinal tract is caused by the consumption of raw or undercooked seafood infected with Anisakis larvae. Penetration of Anisakis larvae into the gastrointestinal mucosa leads to severe epigastric pain, nausea, and vomiting, usually within hours of ingestion of the parasite. Suspicion for gastrointestinal Anisakiasis should be raised in patients with a compatible dietary history. Definitive diagnosis can be made by direct visualization of larvae via endoscopic examination. Although symptoms are self-limiting, the removal of larvae by gastroscopy can hasten relief of symptoms. There are a large number of cases of gastric anisakiasis reported from Japan, Korea, and Western Europe, where it is customary to consume raw fish. Cases reported from the United States are less common, and given the nonspecific symptoms of anisakiasis, the diagnosis can be missed. We report a patient who presented with gastroesophageal reflux disease like symptoms that started after ingesting raw fish. He was found by esophagogastroduodenoscopy to have white, filiform worms penetrating into the wall of his stomach, consistent with a diagnosis of gastric anisakiasis.

Mucinous Signet-Cell Adenocarcinoma of the Ileum: A Diagnostic Challenge-Case Report and Review of the Literature.

Malignancies of the small intestine are rare. Signet-ring cell carcinoma (SRCC) is one of the rarest forms of adenocarcinoma that can arise in the small intestines. We present a case of a patient who originally presented with abdominal pain and radiographic findings suggestive of ileal congestion. The ileal biopsy specimens were nonspecific, and the patient began a trial of corticosteroid treatment for suspected Crohn's disease. A repeat colonoscopy yielded biopsies that were positive for malignancy. The patient then underwent an exploratory laparotomy which led to the diagnosis of SRCC. Given their similar presentations and the extreme rarity of this unusual malignancy, it can be difficult to differentiate between new-onset Crohn's disease and SRCC. A review of the literature was conducted to provide us with an improved understanding of previously documented cases of SRCC.

Vedolizumab (Entyvio®) for the Treatment of Pyoderma Gangrenosum in a Crohn's Disease Patient.

Vedolizumab is a humanized monoclonal integrin blocker with gut selective effects on lymphocyte trafficking. Its efficacy and safety for the treatment of moderate to severe Crohn's disease and ulcerative colitis were demonstrated by phase III GEMINI studies (GEMINI 1 trial: Vedolizumab as Induction and Maintenance Therapy for Ulcerative Colitis; GEMINI 2 trial: Vedolizumab as Induction and Maintenance Therapy for Crohn's Disease). Post hoc analyses of the GEMINI studies further showed the potential benefit of vedolizumab for treating various extraintestinal manifestations, including arthralgias, pyoderma gangrenosum, erythema nodosum, and uveitis. However, findings lacked statistical significance highlighting the need for more clinical data describing vedolizumab's effects on extraintestinal manifestations. There are currently few case reports describing the effect of vedolizumab on pyoderma gangrenosum specifically. We report a Crohn's disease patient whose severe pyoderma gangrenosum of her legs, abdomen, and face have been inactive since starting vedolizumab.

Neutropenic Enterocolitis Complicating Induction Chemotherapy in an Acute Myeloid Leukemia Patient.

Neutropenic enterocolitis is a rare inflammatory condition of the ileocecum. Clinicians should be aware of neutropenic enterocolitis in neutropenic patients with hematologic malignancies undergoing chemotherapy as it portends a poor prognosis if not diagnosed early in its course. We report a patient diagnosed with neutropenic enterocolitis within one week of receiving induction chemotherapy for acute myeloid leukemia.

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.

Pancreatic Pseudocyst Hemorrhage Complicated by an Acute ST-Elevation Myocardial Infarction.

ST-segment elevation myocardial infarction is a medical emergency that requires immediate treatment with potent anti-platelet and anti-coagulant therapies and reperfusion by percutaneous coronary intervention. The use of anti-platelet and anti-coagulant therapies can result in hemorrhagic complications, and their use is challenging in a patient with an active gastrointestinal bleed. We report the case of a patient who simultaneously presented with both an ST-segment elevation myocardial infarction and a hemorrhagic pancreatic pseudocyst. There are currently no comprehensive recommendations to guide treatment of these conditions when presenting concomitantly. This case outlines the multi-disciplinary approach taken by our cardiology and gastroenterology teams and highlights the need to develop management algorithms for these two life-threatening conditions.

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.

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.

Coronary subclavian steal syndrome causing myocardial Infarction.

Coronary subclavian steal syndrome (CSSS) is a rare complication of the internal mammary artery (IMA) grafting in coronary artery bypass surgery. The technical definition is myocardial ischemia due to the reduced flow of blood, or flow reversal in the IMA graft. This in most cases results from hemodynamically significant proximal subclavian artery stenosis. The clinical presentation is variable and ranges from unstable angina to myocardial infarction, and in some cases, sudden cardiac arrest. CSSS is an entity that is hard to diagnose if one is not actively looking for it. The clinical diagnosis is often complicated, and the prevalence of the disorder is frequently underestimated. In this case presentation, we report a case of myocardial infarction that resulted from significant proximal subclavian artery stenosis.

Endoscopic band ligation compared to thermal therapy for gastric antral vascular ectasia: A systematic review and meta-analysis.

BACKGROUND: Gastric antral vascular ectasia is an infrequent cause of gastrointestinal-related blood loss manifesting as iron-deficiency anemia or overt gastrointestinal bleeding, and is associated with increased healthcare burdens. Endoscopic therapy of gastric antral vascular ectasia most commonly involves endoscopic thermal therapy. Endoscopic band ligation has been studied as an alternative therapy with promising results in gastric antral vascular ectasia. AIMS: The primary aim was to compare the efficacy of endoscopic band ligation and endoscopic thermal therapy by argon plasma coagulation for the management of bleeding gastric antral vascular ectasia in terms of the mean post-procedural transfusion requirements and the mean hemoglobin level change. Secondary outcomes included a comparison of the number of sessions needed for cessation of bleeding, the change in transfusion requirements, and the adverse events rate. METHODS: PubMed, Medline, SCOPUS, Google Scholar, and the Cochrane Controlled Trials Register were reviewed. Randomized controlled clinical trials and retrospective studies comparing endoscopic band ligation and endoscopic thermal therapy in bleeding gastric antral vascular ectasia, with a follow-up period of at least 6 months, were included. Statistical analysis was done using Review Manager. RESULTS: Our search yielded 516 papers. After removing duplicates and studies not fitting the criteria of selection, five studies including 207 patients were selected for analysis. Over a follow-up period of at least 6 months, patients treated with endoscopic band ligation had significantly lower post-procedural transfusion requirements (MD -2.10; 95% confidence interval (-2.42 to -1.77)) and a significantly higher change in the mean hemoglobin with endoscopic band ligation versus endoscopic thermal therapy (MD 0.92; 95% confidence interval [0.39-1.45]). Endoscopic band ligation led to a fewer number of required sessions (MD -1.15; 95% confidence interval [-2.30 to -0.01]) and a more pronounced change in transfusion requirements (MD -3.26; 95% confidence interval [-4.84 to -1.68]). There was no difference in adverse events. CONCLUSION: Results should be interpreted cautiously due to the limited literature concerning the management of gastric antral vascular ectasia. Compared to endoscopic thermal therapy, endoscopic band ligation for the management of bleeding gastric antral vascular ectasia led to significantly lower transfusion requirements, showed a trend toward more remarkable post-procedural hemoglobin elevation, and a fewer number of procedures. Endoscopic band ligation may improve outcomes and lead to decreased healthcare burden and costs.

Metastatic Melanoma Presenting as a Gastric Mass.

Melanoma is the most deadly form of skin cancer. While the jejunum, ileum, colon, and rectum are common gastrointestinal sites of metastasis, metastatic melanoma to the stomach is rare and usually not discovered until late in the disease. We report a patient who presented with weight loss and hematemesis; on esophagogastroduodenoscopy, a gastric mass was found, and pathology was consistent with melanoma.

Hemopericardium in a Sirolimus-Treated Renal Transplant Patient.

Sirolimus is an immunosuppressant frequently prescribed to prevent graft-vs-host disease in renal transplant patients. Pericardial effusion is recognized as a rare and potentially lethal side effect of this medication. Hemopericardium, specifically, is an even rarer complication that has yet to be reported in the literature. We report the first case of sirolimus-induced hemopericardium in a renal transplant patient.