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ABSTRACT.
A single case of carcinoma in situ (actinic keratosis) was treated topically with a patch consisting of an aqueous paste of a commercially available mixture (50:1) of green tea concentrate plus Capsicum (Capsol-T®) for approximately 14 days. The carcinoma responded by the formation of apoptotic blisters whereas surrounding normal tissue showed no response. A second untreated carcinoma 17 cm distant from the treated area also responded indicative of a systemic action of the substance.