A case of remnant gastric cancer with multiple bone metastasis and peritoneal dissemination; efficacy of combination therapy of docetaxel and TS-1

A 69-year-old female underwent radical surgery for advanced gastric cancer (Stage IIIA) 7 years ago. She was diagnosed as remnant gastric cancer with multiple bone metastasis and peritoneal dissemination. Treatment with docetaxel and TS-1 was started with the following regimen: daily oral administration of 100 mg/body TS-1 for 14 days, followed by a 7 day rest and infusion of 40 mg/m2 docetaxel on day 1. Two months after the initial administration of docetaxel/TS-1, the sites of the remnant gastric cancer and bone metastasis were reduced in size, and the ALP returned to almost the normal level. The site of peritoneal dissemination had disappeared. Currently (nine months after diagnosis), she is undergoing therapy with TS-1. The combination of docetaxel and TS-1 can be a new tool for the management of gastric cancer with bone metastasis.