Abstract
A seventeen-year-old domestic cat with an oral and mandibular mass that appeared to be a squamous cell carcinoma was treated with a local injection of a new dosage formulation consisting of carboplatin bound to carbon particles. The therapeutic course was good, with a remarkable contraction of oral tumor size and progress in the suppression of the mandibular lesion. As a result, a local injection of the carboplatin bound to carbon particles appeared to be a useful therapy in targeted chemotherapy.