Successful treatment of an extensive verrucous carcinoma with topical 5-aminolevulinic acid-mediated photodynamic therapy

J Oral Pathol Med. 2005 Apr;34(4):253-6. doi: 10.1111/j.1600-0714.2004.00267.x.

Abstract

Our recent study found that a new topical 5-aminolevulinic acid-mediated photodynamic therapy (ALA-PDT) protocol composed of multiple 3-min fractionated irradiations with a light emitting diode (LED) red light at 635 +/- 5 nm for a total of 1000 s (fluence rate: 100 mW/cm(2); light exposure dose: 100 J/cm(2)) after topical application of 20% ALA for 1.5 or 2 h can be used successfully for the treatment of oral verrucous hyperplasia. In this case report, we tested the efficacy of this new treatment protocol of ALA-PDT for an extraoral verrucous carcinoma (VC) lesion at the right mouth angle and an intraoral VC lesion at the right buccal mucosa of a 56-year-old male areca quid chewer and smoker. The extraoral tumor was cleared after six treatments of topical ALA-PDT and the intraoral tumor showed complete regression after 22 treatments of topical ALA-PDT. No recurrence of the VC lesion was found after a follow-up period of 6 months. We suggest that PDT using a topical application of 20% ALA followed by multiple 3-min fractionated irradiations with an LED red light is also an effective and successful treatment modality for VC.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Topical
  • Aminolevulinic Acid / therapeutic use*
  • Carcinoma, Verrucous / drug therapy*
  • Dose Fractionation, Radiation
  • Follow-Up Studies
  • Humans
  • Lip Neoplasms / drug therapy*
  • Male
  • Middle Aged
  • Mouth Neoplasms / drug therapy*
  • Photochemotherapy / instrumentation
  • Photochemotherapy / methods*
  • Photosensitizing Agents / therapeutic use*
  • Remission Induction
  • Treatment Outcome

Substances

  • Photosensitizing Agents
  • Aminolevulinic Acid