What Is Gastric Dysplasia?
Gastric dysplasia refers to abnormal changes in the cells lining the stomach, which are considered precancerous. These changes are not cancer, but they can progress to gastric (stomach) cancer if not monitored or treated appropriately. Dysplasia is usually found during endoscopy and confirmed by biopsy and histological examination.
It is classified based on severity:
- Low-grade dysplasia: Mild to moderate abnormality
- High-grade dysplasia: Severe abnormality with a higher risk of turning into cancer
What Causes Gastric Dysplasia?
Several factors may contribute to the development of gastric dysplasia:
- Chronic Helicobacter pylori infection
- Chronic atrophic gastritis
- Intestinal metaplasia (a condition where stomach cells transform into intestinal-type cells)
- Smoking and alcohol consumption
- Diet high in salt, smoked, or pickled foods
- Family history of gastric cancer
- Genetic mutations or hereditary cancer syndromes (in rare cases)
What Are the Symptoms of Gastric Dysplasia?
Gastric dysplasia itself often causes no symptoms and is usually found incidentally during evaluation for other stomach issues. However, some patients may have:
- Persistent indigestion or bloating
- Nausea or early fullness
- Unexplained weight loss
- Loss of appetite
- Occult (hidden) blood in the stool
What Are the Risks and Complications of Gastric Dysplasia?
- Progression to gastric cancer: Especially in cases of high-grade dysplasia
- Overlapping or coexisting gastric lesions such as ulcers or polyps
- Missed diagnosis: If the dysplasia is not properly monitored, it may progress silently
How Is Gastric Dysplasia Diagnosed?
Diagnosis typically involves:
- Upper endoscopy (EGD): To visualize the stomach lining
- Biopsy: Tissue samples are taken during endoscopy and examined under a microscope
- Histological grading: To determine whether the dysplasia is low-grade or high-grade
- Follow-up endoscopy: To monitor progression or confirm complete treatment
How Is Gastric Dysplasia Treated?
Treatment depends on the grade of dysplasia and patient-specific factors:
- Low-grade dysplasia:
- May be monitored with regular endoscopy and biopsies
- Eradication of H. pylori (if present) to reduce progression risk
- Lifestyle and dietary changes
- High-grade dysplasia:
- Often requires endoscopic resection (removal of the abnormal tissue)
- Endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD)
- Surgical removal of a portion of the stomach in more advanced or widespread cases
Can Gastric Dysplasia Be Prevented?
While not always preventable, risk can be reduced by:
- Treating H. pylori infection early
- Eating a diet rich in fruits and vegetables
- Avoiding smoked and salty foods
- Not smoking or drinking alcohol excessively
- Regular screening for high-risk individuals or those with a family history
How to Manage Gastric Dysplasia Long-Term?
- Regular surveillance endoscopy as advised by your doctor
- Comply with H. pylori treatment and follow-up testing
- Make healthy lifestyle choices, including a balanced diet and avoiding known risk factors
- Promptly report new symptoms such as weight loss, pain, or gastrointestinal bleeding