A patient with gastric cancer complicated with multiple spinal bone metastases showing a complete remission to combination of S-1 and CDDP

The patient was a 66-year-old man. Total gastrectomy was performed due to Borrmann V type moderately differentiated adenocarcinoma of the middle part of the stomach. The final diagnosis was UM 7x6 cm, sT3, sN1, sH0, sP0, sM0, sCY0, sStage IIIA, PM (-), DM (-), D2+alpha, Cur B, ly2, v2. Because CEA had increased slowly from ten months after the operation, it was judged a possibly partial relapse. Twice-administered CDDP 80 mg/body and S-1 80 mg on the eighth day served to decrease CEA. He was hospitalized again due to fracture of the spine, though he left the hospital once. The patient was diagnosed by MRI inspection of the vertebrae thoracicae and the lumbar vertebra as multiple spinal bone metastases. After CDDP 60 mg/body of day 8 was administered twice at S-1 80 mg/day, CEA became normal. Osteolytic changes of the spinal bone disappeared. The 24 months from February 2004 to January 2006 passed without additional treatment. His CEA value tended to rise within the normal range in February 2006. After that, the CEA level increased with a 4-week cycle of 2 weeks of S-1 40-80 mg alternating with a two-week rest.