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Related Concept Videos

Barrett Esophagus-I: Introduction01:21

Barrett Esophagus-I: Introduction

Barrett's esophagus is a medical condition where the esophageal mucosa is significantly damaged by stomach acid or other digestive fluids, often due to long-term exposure associated with gastroesophageal reflux disease (GERD). In GERD, a weakened or abnormally relaxed lower esophageal sphincter allows stomach acid to flow persistently into the esophagus.
This constant acid exposure transforms the esophagus's pink mucosal lining (stratified squamous epithelium) into a type of lining more similar...
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...
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...
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...
Barrett Esophagus-II: Clinical Manifestations and Management01:21

Barrett Esophagus-II: Clinical Manifestations and Management

Individuals with Barrett's esophagus are often asymptomatic, but they may experience symptoms commonly associated with GERD, such as heartburn and acid regurgitation. Additional symptoms can include difficulty swallowing, chest pain, unintentional weight loss, blood in the stool (which may appear black, tarry, or bloody), and episodes of vomiting.
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure entails...
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,...

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Related Experiment Video

Updated: May 8, 2026

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
10:28

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

Published on: January 22, 2018

Gastric sarcomatoid carcinoma.

Fabio Carboni, Giovanni Battista Levi Sandri, Mario Valle

    Journal of Gastrointestinal Surgery : Official Journal of the Society for Surgery of the Alimentary Tract
    |August 21, 2013
    PubMed
    Summary
    This summary is machine-generated.

    Sarcomatoid carcinoma, a rare biphasic gastric tumor, presents diagnostic challenges. Immunohistochemistry is crucial for definitive diagnosis, aiding in selecting optimal therapies for this poor-prognosis cancer.

    Related Experiment Videos

    Last Updated: May 8, 2026

    Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
    10:28

    Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

    Published on: January 22, 2018

    Area of Science:

    • Gastroenterology
    • Oncology
    • Pathology

    Background:

    • Sarcomatoid carcinoma is a rare biphasic malignant tumor of the stomach with unknown histogenesis.
    • Accurate diagnosis is essential due to the poor prognosis associated with surgical treatment.
    • There is a need for improved diagnostic tools to guide therapeutic strategies.

    Observation:

    • A case report of an elderly female patient with an endophytic tumor in the gastric fundus is presented.
    • The patient underwent a partial gastrectomy for tumor removal.
    • Histological examination revealed a mixture of poorly differentiated adenocarcinoma and sarcomatoid components.

    Findings:

    • Immunohistochemical staining confirmed the biphasic nature of the tumor.
    • Carcinoma components showed positive reactions to pan-cytokeratin.
    • The sarcomatoid (fusiform) cells exhibited positive reactions to vimentin.

    Implications:

    • This case highlights the importance of immunohistochemistry in diagnosing gastric sarcomatoid carcinoma.
    • Effective diagnostic methods are crucial for determining the best treatment approach.
    • Further research into the histogenesis and optimal management of this rare tumor is warranted.