Related Experiment Video
Updated: Jun 8, 2026

Chronic Salmonella Infection Induced Intestinal Fibrosis
Published on: September 22, 2019
Incidence and risk factors for lymphoma in a single-center inflammatory bowel disease population
Michael V Chiorean1, Bhupesh Pokhrel, Jaya Adabala
1Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, 550 N University Blvd., UH 4100, Indianapolis, IN, USA. mchiorea@iupui.edu
Aims:
Previous studies on the risk of lymphoma in inflammatory bowel disease (IBD) have yielded conflicting results. We aim to determine the incidence and risk factors for lymphoma in a large IBD population.
Methods:
Patients with lymphoma were identified from a single-center IBD database. The standardized incidence ratio (SIR) of lymphoma was estimated using data from the Surveillance, Epidemiology and End Results (SEER) registry. Risk factors for lymphoma were determined by comparing cases with a matched IBD control group.
Results:
Eleven lymphomas were identified among 3,585 IBD patients during an average of 8.4 years of observation. Three patients were excluded. In the remaining eight, median age at diagnosis was 47 years and mean IBD duration was 20 years (range 7.5-45 years). The SIR for lymphoma was 1.6 [95% confidence interval (CI) 0.6-3.0], and for non-Hodgkin lymphoma (NHL), 1.5 (0.3-2.8). Three lymphoma patients (38%) received prior immunomodulators and two (25%) received biologics, versus 57% and 39% in the control group, respectively (P = 0.4). No correlation was seen with tobacco exposure, disease duration, use, or dose or duration of immunosuppressive therapy.
Conclusions:
In this IBD cohort, risk of lymphoma was not increased compared with the general population. Risk of lymphoma was not associated with any demographic or therapy-related factors.
Related Concept Videos
Inflammatory Bowel Disease III: Crohn's Disease
Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...
Inflammatory Bowel Disease I: Introduction
Inflammatory Bowel Disease IV: Clinical Manifestations
Chronic Bowel Disorders: Introduction
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
