ABSTRACT
TS-1, a novel oral anticancer agent, was administered to a 68-year-old male patient with a paraaortic lymph node metastasis, 42 x 28 mm in size, of gastric cancer. The patient received four courses of treatment. Each treatment course consisted of a four-week administration followed by two drug-free weeks. The daily dose was 120 mg for the first two courses and 100 mg for the last two. A partial response was obtained after completion of the first course and a complete response was observed after the second. As of February, 2000, eleven months after the first administration, no regrowth of the tumor was observed either radiographically or by tumor marker levels. Adverse effects included stomatitis (grade 1), neutropenia (grade 3) and anemia (grade 1), all of which were temporary and needed no treatment. The patient's QOL improved gradually after the treatment. He is now in a good health and undergoes regular check-ups.
