Pathological complete response of synchronous multiple liver metastases associated with advanced gastric cancer to gastrectomy and prompt S-1 treatment in combination with fractional cisplatin: report of a case

Systemic chemotherapy is the treatment recommended for prolonged survival in cases of metastatic gastric cancer. There have been a number of clinical reports of surgical resection of liver metastasis in selected patients with gastric cancer. Here, we report on a case of treatment of far advanced gastric cancer with synchronous multiple liver metastases with prompt S-1 in combination with fractional cisplatin sandwiched between twostage surgery. Metastases including peritoneal dissemination and extensive lymph node involvement were absent so it was feasible to completely remove all of the macroscopic liver metastases. Each step of the chemotherapy progressed satisfactorily and histological examination after the hepatectomy yielded a pathologically complete response of liver metastases from the gastric cancer. This strategy provides a promising treatment for far advanced gastric cancer with a limited number of synchronous liver metastases. The referral to surgical oncology is a crucial step for the documentation of pathological complete response.