PHOTODYNAMIC THERAPY
Using light-activated treatment to target abnormal cells.
Photodynamic therapy (PDT) uses photosensitizing agents together with a specific light source to treat certain precancerous and early skin cancer lesions.
What is photodynamic therapy?
Photodynamic therapy (PDT) uses a light-activated medication to target abnormal cells. After the photosensitizing agent is applied, a specific light source is used to activate it, allowing the treatment to work on the affected area. PDT is primarily used for precancerous lesions and certain localized skin cancers.
Some patients also notice improvements in the appearance of sun-damaged skin as a secondary effect of treatment.
Photodynamic therapy is a potential treatment for:
- Actinic keratosis
- Superficial and some nodular basal cell carcinomas
- Squamous cell carcinoma in situ (Bowen’s disease)
How photodynamic therapy works.
A photosensitizing agent is first applied to the area being treated. Over a set period, the medication is absorbed by abnormal cells. Once ready, a blue or red light is directed at the area to activate the medication. This light triggers a reaction that damages the targeted cells.
The waiting period between applying the medication and using the light is called the drug-to-light interval. Depending on the product used, this interval can range from immediate activation to a few hours.
The benefits of photodynamic therapy.
Photodynamic therapy is a non-invasive option for certain precancerous and superficial skin cancers. Potential benefits include:
- No known long-term side effects when used appropriately
- Less invasive than surgical procedures
- Performed in an outpatient setting
- Can be directed precisely to the treatment area
- May be repeated on the same site if needed
- Usually results in minimal scarring once healed
Watch our videos about photodynamic therapy.
Comparing Two Approaches for Treating Precancerous Skin Lesions
How photodynamic therapy works
What to expect during photodynamic therapy treatment
Photodynamic therapy gallery
Explore more treatment options.
At the Kelowna Skin Cancer Clinic, we offer a range of treatment approaches. The right option depends on the type of lesion and your overall clinical needs. Our team can walk you through the available choices and help you understand what may be recommended for your situation.