This drug is called PDT Photodynamic Therapy. It is a new cancer drug triggered by laser light. Princess Margaret Hospital is saying it is a success that kills cancer cells alone. PBT is a form of radiation treatment originally started in 1990. These are two different things we are talking about, is it not. Carol Ann.

Carol CG to Husband age 60 Stage IV SCC right tonsil T4AN2B tx rad x 35 chemo x 2 Currently after treatment no sign of cancer in throat. (all clear to date)