Barrett’s esophagus is a condition where the normal lining of the esophagus is replaced by abnormal cells, often due to long-term acid reflux. In cases with high-grade dysplasia (precancerous changes) or early cancer, Photodynamic Therapy (PDT) is one of the effective treatment options used to destroy abnormal cells.
What is Photodynamic Therapy?
Photodynamic therapy is a light-activated treatment designed to target and destroy abnormal or precancerous cells in the esophagus while minimizing damage to healthy tissue.
How Does Photodynamic Therapy Work?
- Medication Phase: Two days before the procedure, a light-sensitive medication is given (usually intravenously). This medication is absorbed by all cells in the body, but it accumulates in much higher amounts in cancerous or precancerous cells.
- Laser Activation: During the procedure, the doctor uses an endoscope (a thin, flexible tube with a camera) to guide a laser light to the area with abnormal cells. The laser light activates the medication, triggering a chemical reaction that destroys the targeted abnormal cells.
- Healing Process: After the abnormal cells are destroyed, healthy cells typically grow back in their place. The procedure may need to be repeated several times, with a few months between sessions.
Common Use in Barrett’s Esophagus
PDT is often used after Endoscopic Mucosal Resection (EMR) to treat high-grade dysplasia or early esophageal cancer. This combination has been one of the most studied and longest-used approaches for managing Barrett’s esophagus with high-grade dysplasia.
Important Precautions and Side Effects
The light-sensitive medication stays in your body for some time (up to several weeks). During this period:
- Your skin and eyes become extremely sensitive to sunlight and certain artificial lights.
- Exposure can cause severe sunburn, blistering, or eye damage.
- You must strictly avoid direct sunlight and bright indoor lights for up to 6 weeks after treatment.
- Your doctor will provide detailed instructions on how to protect your skin and eyes.
Other Treatment Options
While PDT is effective, other treatments are also available for high-grade dysplasia and esophageal cancer, including:
- Endoscopic therapies
- Surgery
- Radiation
- Chemotherapy
Always discuss the risks, benefits, and best option for your specific condition with your healthcare provider.
Why Choose Experienced Centers?
Institutions like Mayo Clinic have highly experienced teams specializing in reflux disease, Barrett’s esophagus, and esophageal cancer. Their gastroenterology and hepatology division is often ranked among the best. They may also offer access to clinical trials for new or improved treatments.
Important Note: This information is for educational purposes only. Treatment decisions should always be made in consultation with a qualified gastroenterologist or specialist. For personalized advice or to request an appointment, visit the official Mayo Clinic website.