Photodynamic therapy (PDT) is a cancer treatment that utilizes a combination of a special drug and light to destroy cancer cells. The process is targeted and minimizes damage to surrounding healthy tissue.
How PDT Works
PDT involves a two-step process:
- Photosensitizer Administration: A drug, called a photosensitizer or photosensitizing agent, is administered to the patient. This drug makes cancer cells more sensitive to light.
- Light Activation: The doctor shines a specific type of light onto the treatment area. This light activates the photosensitizer, causing a chemical reaction that destroys the cancer cells.
Breakdown of PDT Components
| Component | Description |
|---|---|
| Photosensitizer | A drug that is selectively absorbed by cancer cells and becomes activated by light. |
| Light Source | A specific type of light is shone onto the treatment area to activate the photosensitizer. |
Benefits of PDT
- Targeted Treatment: PDT targets cancer cells specifically, reducing damage to nearby healthy tissue.
- Minimal Invasiveness: It's less invasive compared to surgery.
- Repeatable Treatment: PDT can be repeated if necessary.
Considerations for PDT
- PDT is most effective for cancers on the surface of the body or in areas where light can reach.
- Side effects can include skin sensitivity to light.
Conclusion
PDT is a sophisticated cancer treatment that combines light and a photosensitive drug to specifically target and destroy cancerous cells.
