A process in which peripheral blood is exposed in an extracorporeal flow system to photoactivated 8-methoxypsoralen (METHOXSALEN) and ultraviolet light - a procedure known as PUVA THERAPY. Photopheresis is at present a standard therapy for advanced cutaneous T-cell lymphoma; it shows promise in the treatment of autoimmune diseases.

Synonyms: Photochemotherapies, Extracorporeal, Photochemotherapy, Extracorporeal, Extracorporeal Photochemotherapy, Photopheresis, Extracorporeal, Photopheresis, Extracorporeal Photopheresis, Extracorporeal Photochemotherapies