Photodynamic therapy of esophageal carcinoma.

Photodynamic therapy (PDT) utilizing either hematoporphyrin derivative or Photofrin II is proving to be an effective modality in the treatment of early superficial (ES) or advanced invasive (AI) carcinoma of the esophagus. An argon-pumped dye laser was used to deliver 630 nm light via quartz fibers passed through the biopsy channel of a gastroscope after intravenous injection of photosensitizer. Between 1982 and 1989, 20 patients (ES=6; AI=14) were treated in this manner. Complete remission was obtained in 4 of 6 ES cases, and the mean survival after PDT alone or in combination with other therapy was 27 months. Five patients remain alive to date. In the AI group, significant remissions were obtained in 6 cases while partial remissions were observed in another 8. The mean dysphagia grade improved from 4.0 to 2.8. We conclude that PDT is efficacious in the treatment of ES esophageal cancer, where complete remission may be achieved, and as palliative therapy in advanced cases to alleviate dysphagia.