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Related Concept Videos

Stomach Histology01:26

Stomach Histology

The stomach comprises several layers that work together to facilitate digestion and protect the organ. The outermost layer is called the serosa, which provides support and protection to the stomach. The muscularis externa layer is responsible for the mechanical breakdown of food by contracting and moving the stomach. The submucosa layer, located beneath the muscularis externa, contains connective tissue, blood vessels, nerves, and glands that secrete mucus and other substances essential for...
Hormones Secreted by the Stomach01:25

Hormones Secreted by the Stomach

Enteroendocrine cells, accounting for only 1% of stomach epithelial cells, play a significant role in digestion and are classified by their digestive hormone secretions.
Each of these hormones secreted by different enteroendocrine cells plays a unique role in digestion. Here are a few examples:
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-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...
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...

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Related Experiment Video

Updated: Jul 2, 2026

Intraoperative Gastroscopy for Tumor Localization in Laparoscopic Surgery for Gastric Adenocarcinoma
10:31

Intraoperative Gastroscopy for Tumor Localization in Laparoscopic Surgery for Gastric Adenocarcinoma

Published on: August 9, 2016

Gastrinoma.

M L Li1, J A Norton

  • 1Department of Surgery, University of California, San Francisco, USA.

Current Treatment Options in Oncology
|June 12, 2002
PubMed
Summary
This summary is machine-generated.

Gastrinoma treatment now focuses on tumor growth, not acid. Surgery offers the best cure, with advanced imaging improving tumor resection rates for better patient outcomes.

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Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer
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Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer

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Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Gastroenterology

Background:

  • Gastrinoma treatment has shifted from managing acid hypersecretion to controlling tumor progression due to effective acid-reducing medications.
  • The primary morbidity associated with gastrinoma has evolved from acid hypersecretion to tumor growth and spread.

Purpose of the Study:

  • To review the evolution of gastrinoma treatment over the past 20 years.
  • To discuss current surgical strategies and controversies in gastrinoma management, particularly in the context of Multiple Endocrine Neoplasia type 1 (MEN1).

Main Methods:

  • Review of recent advances in operative techniques and pre- and intra-operative imaging (duodenotomy, somatostatin-receptor scintigraphy, intraoperative ultrasound).
  • Analysis of surgical approaches for sporadic and MEN1-associated gastrinomas, including tumor debulking and criteria for intervention.

Main Results:

  • Advanced imaging and surgical techniques enable resection of over 95% of gastrinoma tumors.
  • Surgical excision is recommended for all sporadic localized gastrinomas; debulking may improve outcomes in metastatic disease.
  • Surgical intervention for MEN1-associated gastrinoma is advocated for tumors exceeding 2.5 cm due to increased risk of hepatic metastases.

Conclusions:

  • Surgical resection remains the only curative treatment for gastrinoma.
  • Management strategies for MEN1-associated gastrinoma require careful consideration of tumor size and potential benefits of intervention.
  • Adjuvant therapies for gastrinoma currently have a limited role.