Photodynamic therapy: An emerging treatment for GI neoplasia

Photodynamic therapy (PDT) is an emerging endoscopiC technique used to treat a variety of gastrointestinal neoplasms. PDT is a safe and effective way to ablate neoplastic tissue within the gastrointestinal tract and elsewhere in the body using a photosensitizing agent and exposure to laser light. The following is a review of PDT including basic concepts, its use in Barrett's esophagus, esophageal cancer, and cholangiocarcinoma.