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Related Concept Videos

Gastritis II: Pathophysiology01:26

Gastritis II: Pathophysiology

The pathophysiology of gastritis begins with the colonization of the stomach lining by Helicobacter pylori (H. pylori). This bacterium spreads mainly via the oral-oral route through saliva or shared utensils, and can also be transmitted in overcrowded or unhygienic environments through contaminated water, despite its brief survival outside the body.ColonizationOnce ingested, H. pylori enters the stomach and begins colonization by navigating through the mucus layer lining the stomach wall. It...
Pyloric Obstruction01:11

Pyloric Obstruction

Pyloric obstruction, also referred to as gastric outlet obstruction, is a condition characterized by narrowing or blockage at the pylorus—the muscular valve regulating the flow of stomach contents into the duodenum. When this passage becomes impaired, the stomach cannot effectively empty its contents into the small intestine. This disruption leads to a range of gastrointestinal symptoms, including early satiety, bloating, epigastric pain, postprandial nausea, persistent vomiting, and...
Gastritis-I: Introduction and Types01:27

Gastritis-I: Introduction and Types

Gastritis, defined by the inflammation or irritation of the stomach lining or gastric mucosa, manifests in several distinct forms: acute, chronic, reactive, and a specific subtype known as autoimmune metaplastic atrophic gastritis.
Acute gastritis presents as a sudden inflammation triggered by various stressors to the stomach lining, such as exposure to corrosive agents, local irritants like aspirin and other NSAIDs, alcohol consumption, radiation therapy, physical trauma, severe burns, sepsis,...
Gastritis III: Clinical Manifestations and Management01:23

Gastritis III: Clinical Manifestations and Management

The clinical manifestations of gastritis can vary depending on the cause and type of gastritis, but some common symptoms may include the following.
Clinical manifestations of acute gastritis
The patient with acute gastritis may have a rapid onset of symptoms, such as epigastric pain or discomfort, dyspepsia, anorexia, hiccups, or nausea and vomiting, which can last from a few hours to a few days. Erosive or hemorrhagic gastritis may cause bleeding, which may manifest as blood in vomit or as...
Gastritis-II: Pathophysiology01:17

Gastritis-II: Pathophysiology

Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...

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Related Experiment Video

Updated: May 20, 2026

Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer
05:30

Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer

Published on: October 31, 2025

[Gastric malignant lymphoma].

Hiroki Yoshita1, Toshiro Sugiyama

  • 1Department of Gastroenterology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|August 1, 2012
PubMed
Summary

Primary gastric lymphoma, often MALT lymphoma, frequently responds to Helicobacter pylori eradication. However, specific chromosomal translocations may indicate poor response, necessitating alternative treatments like rituximab plus CHOP for diffuse large B-cell lymphoma.

Related Experiment Videos

Last Updated: May 20, 2026

Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer
05:30

Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer

Published on: October 31, 2025

Area of Science:

  • Gastroenterology
  • Oncology
  • Pathology

Context:

  • Primary gastric lymphoma is a rare malignancy, accounting for less than 5% of all gastric neoplasms.
  • The most common histological types are MALT lymphoma and diffuse large B-cell lymphoma.
  • MALT lymphoma pathogenesis is linked to Helicobacter pylori infection.

Purpose:

  • To review the diagnosis, treatment, and outcomes of primary gastric lymphoma.
  • To highlight the role of Helicobacter pylori eradication in MALT lymphoma treatment.
  • To discuss therapeutic strategies for refractory or advanced gastric lymphomas.

Summary:

  • MALT lymphoma, often induced by H. pylori, shows high regression rates (60-80%) with eradication therapy.
  • Chromosomal translocations, such as t(11;18), t(1;14), or t(14;18), are associated with poor response to eradication and activate NF-kappaB.
  • Diffuse large B-cell lymphoma, a heterogeneous entity, benefits from combination therapy with rituximab plus CHOP, preserving gastric function.

Impact:

  • Non-surgical treatment approaches are recommended for gastric lymphoma.
  • Understanding prognostic factors like chromosomal translocations guides therapeutic decisions.
  • Effective treatments can preserve stomach integrity and improve patient outcomes.