| abstract |
The present invention discloses a method of treating a head and neck cancer or preventing the development of pre-malignant lesions to this cancer, by administering locally to the oral cavity, a sustained release drug delivery system comprising a drug for the treatment of this cancer or for the prevention of said lesions, and at least one polymer, such that said system is attached to a surface in the oral cavity and remains attached thereto for at least 1 hour, accompanied by release of the drug and maintaining an effective therapeutic concentration thereof in the cavity, for at least 1 hour. Further are disclosed a sustained release drug delivery system and a liquid precursor varnish composition to this system. |