[PHOTODYNAMIC THERAPY FOR INTRADERMAL METASTASES OF BREAST CANCER USING THE MATRIX LIGHT-EMITTING DIODES APPARATUS
Voprosy Onkologii
|August 6, 2015
Summary
Photodynamic therapy (PDT) using LED apparatus showed significant results for chemo- and radioresistant breast cancer skin metastases. Complete regression occurred in 50% of patients, with partial response in another 25%.
Area of Science:
- Oncology
- Dermatology
- Photomedicine
Context:
- Intradermal metastases of breast cancer present a therapeutic challenge, often exhibiting resistance to conventional chemotherapy and radiotherapy.
- Photodynamic therapy (PDT) offers a targeted treatment modality for localized cancer lesions.
Purpose:
- To evaluate the efficacy of photodynamic therapy (PDT) utilizing a matrix light-emitting diode (LED) apparatus for treating chemo- and radioresistant intradermal breast cancer metastases.
- To assess the role of fluorescence diagnostics in monitoring photosensitizer uptake and photobleaching during PDT.
Summary:
- The study involved 4 patients with intradermal breast cancer metastases treated with PDT. Fluorescence diagnostics were used to assess photosensitizer accumulation before irradiation.
- The treatment involved a 400 cm² irradiation area with a total dose of 250 J/cm². Mild pain was managed with non-narcotic analgesics.
- Results showed complete regression of intradermal lesions in 2 patients (50%), partial response in 1 patient (25%), and disease progression in 1 patient (25%).
Impact:
- PDT demonstrates potential as an effective treatment option for challenging intradermal breast cancer metastases.
- The findings suggest PDT can achieve significant tumor regression in a subset of patients with resistant disease.
- Further research with larger cohorts is warranted to optimize PDT protocols and expand its clinical application in breast cancer management.
