This sounds promising. I wonder if a natural "drug" could work just as well?
"Photodynamic therapy uses tumour-killing drugs that are activated by light.
With skin cancer, first a cream is rubbed onto the affected area, then a light shone onto the cancer for 20 minutes. This creates a form of oxygen which destroys the tumour. The same technique can be used to treat cancers inside the body, if the area can be accessed with an endoscope (a flexible tube) containing a light.
The patient needs just one treatment - unlike the repeated doses required for radiotherapy or chemotherapy, and the side-effects (pain, swelling and nausea) are far milder."
http://www.lef.org/news/LefDailyNews...ection=DISEASE
Photodynamic Therapy
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