Gastroenterology Commons^™

From Villi To Alveoli: Lung Involvement In Celiac Disease – A Narrative Review, Mateusz Marzec, Patrycja Cecha

Journal of Community Hospital Internal Medicine Perspectives

Background:

Celiac disease (CD) is a chronic, immune-mediated enteropathy triggered by gluten that affects about 1% of the population and may present with extraintestinal manifestations. Pulmonary complications are considered rare and are poorly characterized. Lane-Hamilton syndrome is the best described lung manifestation, but data suggests a broader spectrum of respiratory involvement.

Methods:

We performed a narrative review with structured search strategy of PubMed and Embase (January 1, 1970 – December 1, 2025) using the terms celiac/coeliac and lung, pulmonary, respiratory, hemoptysis, hemosiderosis, alveolar hemorrhage, interstitial lung disease, alveolitis, bronchiectasis …

High Burden Of Elevated Fib-4 In Metabolically At-Risk Primary Care Patients: Simple Predictors To Guide Hepatic Fibrosis Triage, Ridwan Ademola Lawal, Fatimah Bello, Rashmee Patil, Juliana Yang

Research Symposium

Background: Metabolic dysfunction–associated steatotic liver disease (MASLD), including metabolic dysfunction–associated steatohepatitis (MASH), is a leading cause of chronic liver disease worldwide. Current guidelines recommend fibrosis-based risk stratification using noninvasive tools such as the Fibrosis-4 (FIB-4) index in patients with metabolic risk factors, followed by secondary assessment (e.g., transient elastography or enhanced liver fibrosis(ELF) testing) for those with elevated scores. However, data on the real-world prevalence of elevated FIB-4 in U.S. primary care populations, particularly in safety-net settings, and the downstream implications for fibrosis evaluation remain limited. We aimed to quantify the burden of elevated FIB-4 in a primary care setting …

Biotic Therapies For Irritable Bowel Syndrome: Current Interventions, Gina Wodarczyk, Maria Winte, Diana Mastellone, Termen Singh, Joshua Desipio, Sangita Phadtare

Division of Gastroenterology and Hepatology Faculty Papers

Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder characterized by recurrent abdominal pain and changes in bowel habits without measurable disease processes. Recent research emphasizes the gut-brain-microbiome (GBM) axis and explores how microbiota influence gastrointestinal and central nervous system functions. Here, we first discuss a brief overview of various treatment approaches for IBS, focusing on interventions such as probiotics, prebiotics, or synbiotics that target the GBM axis in adults with IBS. Relevant trials discussed the use of probiotics, prebiotics, or synbiotics.

Specific Carbohydrate Diet Versus Mediterranean Diet In Adult Patients With Mild To Moderate Ulcerative Colitis: A Randomized Controlled-Feeding Trial, Albert Sheng-Yin Chen, Long Nguyen, Brianna Gray, Katherine Williams, Jenny Gurung, Lauren Canha, Jessica Mcgoldrick, Jane Hubbard, Hamed Khalili

Student Papers, Posters & Projects

Background and aims: This pilot randomized controlled-feeding trial compared the effect of Specific Carbohydrate Diet (SCD) and Mediterranean diet (MeD) in mild to moderate ulcerative colitis (UC).

Methods: Seventeen adults were randomized to a 6-week SCD (n = 8) or MeD (n = 9) intervention. Primary outcome was change in partial Mayo Clinic score (pMCS).

Results: The study was discontinued early due to significant dropout (n = 9, 52.9%). There was no significant between-group differences observed for pMCS change (SCD, -0.8; MeD, -1.3; p = 0.499) or secondary outcomes. Exploratory metagenomic analysis revealed enrichment of Parasutterella excrementihominis …

Navigating Complex Esophageal Perforations: A Case-Specific Approach To Successful Outcomes, Harsimran Kalsi, Anushree Rai, Kobina Essilfie-Quaye, Neeka Akhavan, Yaseen Perbtani, Tony S. Brar

HCA Healthcare Journal of Medicine

Esophageal perforation is a life-threatening condition requiring prompt diagnosis and effective management. While self-expanding metal stents (SEMS) are a first-line treatment, persistent leaks often necessitate adjunctive endoscopic interventions. A structured, multimodal approach is critical for optimizing outcomes and avoiding surgical intervention. A 44-year-old man developed an iatrogenic esophageal perforation following surgical leiomyoma enucleation. Initial treatment with overlapping fully covered self-expanding metal stents (FC-SEMS) failed to achieve closure, necessitating endoscopic suturing for defect reinforcement. Despite suturing, persistent leakage required placement of a larger-diameter FC-SEMS, secured with an endoscopic fixation system to prevent migration. Serial imaging confirmed successful defect closure, allowing the …

Psychogastroenterology: An Introduction For Behavioral Health And Healthcare Professionals, Jerrod Brown Ph.D., M.A., M.S., M.S., M.S., M.S., M.S., Jeremiah B. Schimp Phd, Ma, Lpcc, Leanne Skehan Dcn, Msacn, Mph, Mba, Cns, Ches, Shelley Mydra Dmft, Lmft, Jonathan Ward Dc, Phd(C), Ms, Dibcn, Tiffany Flaten Cns, Ldn

Nutritional Neurocriminology Today

Although often difficult to discuss with clients, gastrointestinal (GI) issues affect an estimated 60 to 70 million Americans (American Gastroenterological Association, 2022). Yet only about 25% of those experiencing these conditions receive treatment. This is troubling because GI issues frequently co-occur with clinically significant consequences for physical health, psychological well-being, daily functioning, and overall quality of life. Designed for behavioral health and healthcare professionals, this brief article introduces the field of psychogastroenterology, with emphasis on symptoms, stigma, diagnosis, and treatment. Key topics include the gut-brain axis, common digestive health conditions, and the mental health implications associated with gastrointestinal disorders.

Liver Injury From Medications Used For Treating Inflammatory Bowel Disease: The Drug-Induced Liver Injury Network Experience, Harish Gopalakrishna, Jiezhun Gu, Yi-Ju Li, Huiman Barnhart, Dina Halegoua-De Marzio, Herbert L. Bonkovsky, A. Sidney Barritt, Jean P. Molleston, Naga P. Chalasani, Marwan Ghabril

Division of Gastroenterology and Hepatology Faculty Papers

BACKGROUND: We aimed to investigate and characterise DILI due to approved therapies for inflammatory bowel disease (IBD).

METHODS: Using the Drug-Induced Liver Injury Network (DILIN) prospective study, we evaluated definite, highly likely, or probable DILI attributed to IBD therapies, including use for non-IBD indications (but excluding corticosteroids). HLA allele associations were investigated.

RESULTS: Among 1806 participants, 81 (4.5%) had IBD-agent DILI: 31 biologics (27 infliximab), 35 immunomodulators (31 azathioprine/mercaptopurine), 14 aminosalicylates (11 sulfasalazine) and 1 small molecule (tofacitinib). Median age was 45 years with 75% female and 78% White. Patients with biologic-DILI were younger, had longer latency (median 124 days), …

Evaluating Outcomes Of Alternative Pathologic Terminology In High-Grade Dysplastic Colorectal Lesions, Shaman Dalal, Aakash Desai, Nahel Tunio, Jacqueline Khalil, Devereaux Sellers, Marc Landsman

Division of Gastroenterology and Hepatology Faculty Papers

Background Pathologists occasionally classify colorectal adenomas with dysplastic mucosal invasion as intramucosal carcinoma (IMC), or carcinoma in situ (CIS), instead of high-grade dysplasia (HGD), potentially leading to earlier surveillance colonoscopies and inappropriate surgical referrals. We aimed to analyze differences in the management of patients with these diagnoses, and examined the factors that may lead to inappropriate early interval (IEI) follow-up recommendations for surveillance.

Methods We reviewed 870 colonoscopy and pathology reports from 2015-2022, excluding cases of colorectal cancer, inflammatory bowel disease, and lesions not amenable to endoscopic resection. Surveillance appropriateness was defined in accordance with the 2020 US Multi Society …

Incidental Colorectal Adenomas In Adolescents: Clinical Management, Genetic Evaluation, And Surveillance., Brett J. Hoskins, Shlomi Cohen, Colleen B. Flahive, Isabel Rojas, Aparajita Singh, Thomas M. Attard

Manuscripts, Articles, Book Chapters and Other Papers

The rising incidence of early-onset colorectal cancer has renewed attention to colorectal adenomas in adolescents and young adults (AYA), although these lesions remain rare and poorly characterized in adolescents. Lack of age-specific guidance creates uncertainty regarding genetic evaluation, surveillance intervals, and long-term management when these lesions are identified in adolescents. This narrative review synthesizes current evidence and expert perspective on epidemiology, evaluation, endoscopic management, surveillance, genetic considerations, and psychosocial implications of incidentally identified colorectal adenomas across the AYA spectrum, with emphasis on adolescents as a distinct clinical population. Available data largely derive from adults aged 20-49 years but suggest that …

Retrospective Chart Review Of Immobilized Lipase Cartridge Use In Children With Short Bowel Syndrome., Elizaveta Khenner, Jennifer Morton, Laura Green, Ashlee Yoder, Kayla Paul, Ann E. Remmers, William San Pablo

Manuscripts, Articles, Book Chapters and Other Papers

This retrospective, single-center chart review studied the use of an in-line, immobilized lipase cartridge (ILC) in children with short bowel syndrome (SBS) at Children's Mercy Hospital. For parenteral nutrition (PN)-dependent patients, the primary endpoint was enteral feeding progression, evaluated by comparing monthly change from baseline in PN and enteral nutrition (EN) after the start of ILC use. For patients with enteral autonomy, changes from baseline in growth measure z-scores were evaluated. In 9 PN-dependent patients (with Type II or III SBS), mean PN use decreased 10.6 kcal/kg/day (15.5%) and mean EN use increased by 6.0 kcal/kg/day (39.9%) after 3.8 to …

Modulate Obesity And Related Metabolic Complications For Yielding Improvements In Ibd Outcomes (Modify-Ibd): Consensus On Obesity And Cardiometabolic Comorbidities In Inflammatory Bowel Disease Using Systematic Reviews And The Rand/Ucla Appropriateness Method, Jalpa Devi, Sami Samaan, Priya Sehgal, Mouhand Mohamed, Matthew Vincent, Shannon Coombs, Michelle Doering, Edward L. Barnes, Amanda M. Johnson, Andres J. Yarur, Parakkal Deepak

Division of Gastroenterology and Hepatology Faculty Papers

INTRODUCTION: Obesity and related cardiometabolic comorbidities, including hypertension, dyslipidaemia, diabetes, metabolic dysfunction-associated steatotic liver disease and atherosclerotic cardiovascular disease, are increasingly prevalent among individuals with inflammatory bowel disease (IBD). These conditions influence disease activity, therapeutic response, surgical outcomes and overall quality of life, yet evidence remains fragmented. The Modulate Obesity and relateD metabolic complIcations For Yielding improvements in IBD outcomes (MODIFY-IBD) initiative aims to synthesise evidence and generate consensus recommendations to guide practice and future research in this area. This study describes a protocol for a structured evidence synthesis and Research And Development/University of California, Los …

Impact Of Dietician Counseling On Outcomes In Newly Diagnosed Celiac Disease, Andreas Mozny B.A., Alyusuf Elnaggar B.A., James Mo M.D., Suraj Suresh M.D.

Medical Student Research Symposium

Title: Impact of Dietician Counseling on Outcomes in Newly Diagnosed Celiac Disease

Background: Dietician counseling is routinely recommended for newly diagnosed celiac disease (CD), yet its measurable impact is not well defined. This study examined whether early dietician involvement improves clinical symptoms or serologic outcomes.

Methods: We retrospectively reviewed adults with biopsy-confirmed CD at a single center from 2020–2024. Demographics, symptoms, and laboratory data were collected by chart review with ≥6 months of follow-up. Patients who met with a dietician formed the dietician group; all others were assigned to the non-dietician group. Fisher's Exact tests evaluated abdominal …

Titanium Dioxide: An Inquiry Into The Mechanisms And Implications Of Exposure In Gut Dysbiosis And Metabolic Disorders, Meghan Gardiner

Senior Honors Theses

Titanium dioxide (TiO₂) is one of the most prevalent food additives utilized in commercial products in the United States. While TiO₂ was originally hailed as a nontoxic and cost-effective additive, studies are beginning to reveal that TiO₂ is not as safe as it once seemed. TiO₂ may contribute to the development of insulin resistance and metabolic disorders through direct and indirect mechanisms. The compound induces gut dysbiosis, leading to alterations in bacterial metabolites and pro-inflammatory cytokines, which results in the selective resistance of glucocorticoid receptors. Additionally, TiO₂ itself can translocate from the gut to …

Comparative Effectiveness Of Low Versus High Dose Upadacitinib As Maintenance Treatment In Patients With Ulcerative Colitis: A Real-World Cohort Study From The United States, Priya Sehgal, Gursimran S. Kochhar, Harpreet Kaur, Himsikhar Khataniar, Raina Shivashankar, James D. Lewis, Aakash Desai

Division of Gastroenterology and Hepatology Faculty Papers

BACKGROUND: There is limited real-word data comparing efficacy of low dose upadacitinib (UPA) to high dose UPA as maintenance therapy for ulcerative colitis (UC).

METHODS: This was a retrospective cohort study utilizing the U.S. Collaborative Network in adults ≥18 years old with UC who initiated UPA 15 mg compared to 30 mg for maintenance therapy between April 2022 and December 2023. The primary outcome was a composite of intravenous steroid use, oral steroid use, or colectomy from 12 to 60 weeks from the index UPA prescription. Propensity score matching (PSM) was performed for demographics, co-morbid conditions, laboratory, and IBD medication …

Spectral Characterization Of Colorectal Cancer Using Excitation-Scanning Hyperspectral Imaging, Natalie Hadad

Honors Theses

Colorectal cancer is one of the most common and deadly cancers worldwide, with a lifetime risk of approximately one in twenty-three for men and one in twenty-five for women. Although early detection significantly improves survival, current diagnostic approaches such as tissue biopsy are invasive, reliant on subjective interpretation, have extended turnaround times, and risk missing flat or depressed lesions that are more difficult to detect than raised polyps. These limitations highlight the need for objective, minimally invasive technologies capable of detecting early tissue changes. This study investigates excitation-scanning hyperspectral imaging (Ex-HSI) as a label-free optical approach for identifying colorectal cancer–associated …

An Atypical Presentation Of Metastatic Gastric Adenocarcinoma Due To Pulmonary Lymphangitic Carcinomatosis, Matthew Moritz, Omar Pandhair

Books, Presentations, Posters, Etc.

Pulmonary lymphangitic carcinomatosis (PLC) accounts for approximately 8% of pulmonary metastases and is primarily associated with breast, lung, and gastric cancers. Chest radiographs are often nonspecific and normal in approximately 50% of cases. We present a case of PLC as an initial presentation of metastatic gastric adenocarcinoma. A 57-year-old White woman with prior tobacco use, asthma, and multiple sclerosis on Natalizumab presented with three months of progressive dyspnea and cough. She was evaluated multiple times and treated with various antibiotics and inhalers for presumed bronchitis. Despite this, her symptoms worsened, prompting hospital evaluation. She was tachycardic and markedly hypoxemic on …

Addressing Food Insecurity Through Partnering With The Community Teaching Kitchen On Lifestyle Medicine Hypertension Class, Emily Miyasako, Jill Christensen

Books, Presentations, Posters, Etc.

Background: Food insecurity is defined as limited or unreliable access to adequate and nutritious food. In Oregon, approximately 1 in 8 residents experience food insecurity, with rates disproportionately affecting low-income individuals, racial and ethnic minorities, and households with children or elderly individuals. Food insecurity remains a significant threat to our patients’ health and is associated with obesity, malnutrition, and poor mental health. As a primary care provider, I have seen the effects of food insecurity on my patients, but I am thankful for the presence of our Community Teaching Kitchen. The Community Teaching Kitchen (CTK) at Providence Milwaukie provides nutritional …

Evaluating Glucagon-Like Peptide-1 Receptor Agonist Safety Before Upper Endoscopy: A Systematic Review And Meta-Analysis, Zohaib Ahmed, Amna Iqbal, Sami Ghazaleh, Abdallah Kobeissy, Ali Nawras, Yaseen Alastal, Hani Saad, Sarmed Mansur, Idrees Mohiuddin, Umair Iqbal, Dushyant Singh Dahiya, Syeda Faiza Arif, Connor Campbell, Wade Lee-Smith, Mohammad Asif, Faisal Kamal, Aamir Saeed, Omar Horani

Division of Gastroenterology and Hepatology Faculty Papers

BACKGROUND: The use of glucagon-like peptide-1 receptor agonists (GLP-1 RAs) has remarkably increased in the past few years as they have demonstrated significant reduction in A1c and major cardiovascular outcomes and have led to weight loss with low risk of hypoglycemia. GLP-1 RA use has raised concerns about potential associations with increased gastric retention and adverse outcomes in upper endoscopy procedures.

METHODS: We conducted a comprehensive search across multiple databases to identify comparative studies evaluating the impact of GLP-1 RA exposure versus non-exposure on upper endoscopy outcomes. Studies comparing GLP-1 RAs to other medications were excluded. The primary outcome was …

An Emerging Approach To Ibd Treatment: Personalized Nutrition Through Gut Microbiome Optimization., Kafayat Yusuf, Thomas M. Attard, Mazin Al-Kasspooles, Shahid Umar

Manuscripts, Articles, Book Chapters and Other Papers

Inflammatory bowel disease (IBD) is a chronic inflammatory disorder of the gastrointestinal tract characterized by relapsing and remitting disease activity. Despite decades of research, a definitive cure for IBD remains elusive, as cycles of remission and flare-ups mark the disease course and often relies on long-term pharmacologic and supportive strategies. Increasing evidence indicates that diet and nutrition play an important role in modulating the outcomes of IBD. Although a wide range of dietary interventions has been explored, no universally effective approach has been established. Investigations have also proven that different dietary interventions can significantly affect clinical outcomes by altering gut …

Costs, Demographics, And Causative Agents In Patients Hospitalized For Drug Induced Liver Injury: Trends In A Large Academic Healthcare System, Megan Kozar, Yunisse Gonzalez, Dina Halegoua-De Marzio

Department of Medicine Faculty Papers

PURPOSE: Drug-induced liver injury (DILI) is an uncommon but potentially life-threatening condition. To date, the burden of DILI on a single, large healthcare system has not been investigated, preventing adequate resource allocation. This study aims to quantify DILI-related healthcare utilization within the Jefferson Health System (JHS) and identify case-related factors associated with high resource requirements; such information is crucial to focus efforts toward resource reduction.

PATIENTS AND METHODS: This study characterizes trends of 48 DILI cases within JHS, including demographics, payer status, causative agent, and DILI pattern. These variables were correlated with length of stay (LOS) and cost relating to …