Precancerous Gastric Lesions
Precancerous Gastric Lesions - Related Videos
10:31
Intraoperative Gastroscopy for Tumor Localization in Laparoscopic Surgery for Gastric Adenocarcinoma
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Cited by 12 •
2016
In early gastric cancer, the aim of surgery is to precisely remove the distal stomach including the primary tumor. To do this, accurate localization of the tumor is crucial, especially in totally laparoscopic surgery. This protocol describes a procedure for intraoperative gastroscopy in totally laparoscopic subtotal gastrectomy.
05:18
Roux-en-Y Gastric Bypass Procedure: A Bariatric Surgical Procedure for Gastric Resectioning in Murine Model
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2025
This video describes a bariatric surgery-Roux-en-Y procedure. This involves the cutting of the jejunum- the middle portion of the intestine- to generate two intestinal limbs. The biliary limb is attached to the existing intestinal loop and the alimentary limb is attached to the stomach, creating a gastric bypass. The gastric bypass created here helps to decrease the nutrient uptake and efficiently reduces body weight.
07:37
Roux-en-Y Gastric Bypass Operation in Rats
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Cited by 45 •
2012
Numerous studies using gastric bypass rat models have been recently conducted to uncover the underlying physiological mechanisms of Roux-en-Y gastric bypass operations. This article aims to demonstrate and discuss the technical and experimental details of our published gastric bypass rat model to understand advantages and limitations of this experimental tool.
05:30
Laparoscopic Radical Gastrectomy for Remnant Gastric Cancer
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2025
Laparoscopic radical gastrectomy for remnant gastric cancer has been increasingly adopted as a minimally invasive surgical approach in recent years. This article proposes a detailed operating procedure, aiming to provide practical technical guidance for surgeons and promote the broader adoption of laparoscopic surgery in managing remnant gastric cancer.
03:30
Establishing an Infection Model Through Microinjection of Gastric Organoids with Pathogenic Bacteria
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2025
This video demonstrates a method to establish a gastric organoid infection model by microinjecting gastric pathogen Helicobacter pylori into the lumen of the organoids. This model helps in studying infection-induced changes in gastric cells.
FAQs
Progression can involve a sequence of tissue changes, including atrophy, intestinal metaplasia, and dysplasia. Atrophy reflects loss of normal tissue features, while intestinal metaplasia indicates altered epithelial identity. Dysplasia represents increasingly disorganized growth and differentiation. Together, these changes help biologists examine how persistent tissue injury may move toward malignancy.
Persistent inflammation can disrupt the normal cycle of epithelial renewal in the stomach. When injury continues, cells must repeatedly respond while maintaining tissue organization, increasing the likelihood of abnormal growth and differentiation. This mechanism connects long-term tissue damage with the development of atrophy, metaplasia, and dysplasia, making inflammation an important focus of biological investigation.
These findings represent different aspects of altered tissue organization and cell behavior. Atrophy indicates loss of normal gastric tissue features, intestinal metaplasia reflects a change in epithelial characteristics, and dysplasia shows disorganized growth and differentiation. Examining them together helps researchers characterize the biological state of the stomach lining and evaluate how far normal epithelial behavior has changed.
Endoscopy allows clinicians and researchers to examine the stomach lining directly and identify areas requiring closer assessment. Histopathology then evaluates tissue structure and cellular organization, helping characterize changes such as atrophy, intestinal metaplasia, or dysplasia. Combining visual examination with microscopic assessment improves classification of abnormal tissue and supports decisions about risk evaluation and follow-up.
Classification organizes abnormal gastric findings according to the nature and extent of tissue change. Because atrophy, intestinal metaplasia, and dysplasia reflect different disruptions of epithelial biology, their identification can help determine which individuals require continued surveillance. This approach supports earlier recognition of concerning progression and provides a structured basis for monitoring changes over time.
Helicobacter pylori infection is identified as an underlying cause that may contribute to the persistent injury and inflammation associated with these lesions. Investigating this factor adds biological context to the tissue findings and can guide attention toward treatment of the underlying cause. Addressing such causes supports prevention-oriented strategies alongside endoscopic and histopathological evaluation.