RT Journal Article SR Electronic T1 Prognostic Factors for Gastric Cancer with Cancer Cells in the Peritoneal Cavity JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 2481 OP 2485 VO 36 IS 5 A1 MINORU FUKUCHI A1 ERITO MOCHIKI A1 TORU ISHIGURO A1 TOSHIRO OGURA A1 JUN SOBAJIMA A1 YOUICHI KUMAGAI A1 KEIICHIRO ISHIBASHI A1 HIDEYUKI ISHIDA YR 2016 UL http://ar.iiarjournals.org/content/36/5/2481.abstract AB Aim: To identify the prognostic factors for gastric cancer with positive peritoneal cytology (CY1) or peritoneal metastasis (P1). Patients and Methods: We retrospectively analyzed clinicopathological and survival data of 78 patients who had undergone gastrectomy and/or S-1 based chemotherapy for CY1 or P1 gastric cancer. Results: The median overall survival (OS) did not differ significantly between patients with CY1P0, CY0P1 and CY1P1 disease (24, 17 vs. 14 months, respectively). Among 12 clinicopathological factors, clinical N3 (odds ratio [OR]=2.18; 95% confidence interval [CI]=1.22-4.00; p=0.01) and gastrectomy not performed (OR=1.80; 95% CI=1.29-2.51; p<0.01) were significant independent prognostic factors. The median OS significantly differed between patients who had undergone gastrectomy plus chemotherapy versus chemotherapy alone (22 vs. 10 months, respectively; p<0.01). Conclusion: Gastrectomy and perioperative chemotherapy may both be indicated in CY1 or P1 gastric cancer patients with clinical N0-2.