[A case of stage IV gastric cancer responding to combined chemotherapy by intravenous, intraarterial and intraperitoneal injection].

We treated a case of unresectable gastric cancer in which peritoneal lavage cytology and the primary tumor responded to combined chemotherapy by intravenous, intraarterial and intraperitoneal injection. The patient was a 61-year-old male with loss of appetite. He underwent laparotomy for gastric cancer in November, 1997. An intraperitoneal catheter was set without gastrectomy because of the unresectability due to extensive peritoneal dissemination and local invasion to pancreas. The patient was given combined chemotherapy using 5-FU 6,000 mg i.v., CDDP 360 mg i.p. and 5-FU 10,500 mg ia by the catheters in the supra vena cava, right gastroepiploic artery and peritoneal cavity. One month after laparotomy, peritoneal lavage cytology had changed to class I from class V, and the primary tumor had been reduced to 10 mm in size from a diffusely infiltrating tumor. His quality of life in appetite and activity was improved for 13 months.