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Related Concept Videos

Barrett Esophagus-I: Introduction01:21

Barrett Esophagus-I: Introduction

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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...
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Esophageal Strictures-I: Introduction01:30

Esophageal Strictures-I: Introduction

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Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
235
Barrett Esophagus-II: Clinical Manifestations and Management01:21

Barrett Esophagus-II: Clinical Manifestations and Management

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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...
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Cancer Prevention02:59

Cancer Prevention

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Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
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Esophageal Varices-I: Introduction01:24

Esophageal Varices-I: Introduction

266
Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
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The Periodic Table and Organismal Elements01:27

The Periodic Table and Organismal Elements

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Elements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally occurring, and only a few of them are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.
Periodic Table Provides Information...
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Related Experiment Video

Updated: Aug 19, 2025

Development of Compendium for Esophageal Squamous Cell Carcinoma
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Development of Compendium for Esophageal Squamous Cell Carcinoma

Published on: April 12, 2024

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Esophagus cancer and essential trace elements.

Xin Yang1, Zhe Tang2, Jing Li1

  • 1Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Frontiers in Public Health
|December 5, 2022
PubMed
Summary
This summary is machine-generated.

Essential trace elements like zinc and selenium may reduce esophagus cancer risk. However, iron

Keywords:
copperesophagus canceressential trace elementsironmineralsseleniumzinc

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Area of Science:

  • Nutrition Science
  • Oncology
  • Epidemiology

Background:

  • Essential trace elements are investigated for their role in cancer prevention.
  • Studies on trace elements and esophagus cancer (EC) show inconsistent findings.
  • Some trace elements may protect against EC, while others pose risks.

Purpose of the Study:

  • To review the association between essential trace element intake/supplementation and esophagus cancer risk.
  • To analyze the specific roles of zinc, copper, iron, and selenium in EC.
  • To identify future research directions for trace elements and EC.

Main Methods:

  • Literature review of epidemiological and laboratory studies.
  • Analysis of data on zinc, copper, iron (total and heme), and selenium intake.
  • Synthesis of findings regarding their association with esophagus cancer risk.

Main Results:

  • Zinc intake may lower EC risk, particularly in high esophageal squamous cell carcinoma (ESCC) regions.
  • The link between copper supplementation and EC risk is unclear.
  • Total iron intake may be associated with lower EC risk, whereas heme iron intake might increase it.
  • Selenium intake demonstrates a protective effect, especially in individuals with low baseline selenium levels.

Conclusions:

  • Certain essential trace elements, notably zinc and selenium, show potential protective effects against esophagus cancer.
  • The roles of copper and different forms of iron in EC development require further investigation.
  • Understanding these associations is crucial for developing targeted nutritional strategies for EC prevention.