• J Surg Oncol · Mar 2021

    Multicenter Study

    Tumor characteristics and clinical outcome of peritoneal metastasis of gastric origin treated with a hyperthermic intraperitoneal chemotherapy procedure in the PERISCOPE I trial.

    • Willem J Koemans, Rosa T van der Kaaij, Emma C E Wassenaar, Djamila Boerma, Henk Boot, Karolina Sikorska, Maartje Los, Cecile Grootscholten, Koen J Hartemink, Veenhof Alexander A F A AAFA Department of Surgical Oncology, the Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands., Liudmila Kodach, Petur Snaebjornsson, and Johanna W van Sandick.
    • Department of Surgical Oncology, the Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands.
    • J Surg Oncol. 2021 Mar 1; 123 (4): 904-910.

    IntroductionThe PERISCOPE I (Treatment of PERItoneal dissemination in Stomach Cancer patients with cytOreductive surgery and hyPErthermic intraperitoneal chemotherapy) study was conducted to investigate the safety and feasibility of hyperthermic intraperitoneal chemotherapy (HIPEC) in gastric cancer patients with limited peritoneal dissemination. In this study, tumor characteristics and clinical outcome of the patients treated in the PERISCOPE I trial were investigated.MethodsPatients who had undergone the full study protocol were selected; that is, preoperative systemic chemotherapy, followed by a surgical procedure consisting of a (sub)total gastrectomy, cytoreductive surgery, and HIPEC with oxaliplatin (460 mg/m2 ) and docetaxel (in escalating doses).ResultsTwenty-five PERISCOPE I patients underwent the full study protocol. Most patients had an ypT3-4 tumor (96%) and the diffuse-type histology was predominant (64%). Seven patients (28%) had a microscopically irradical (R1) resection. In all patients, a complete cytoreduction was achieved. Median follow-up was 37 (95% confidence interval [CI]: 34-39) months. Disease recurrence was detected in 17 patients (68%). Median disease-free and overall survival were 12 and 15 months, respectively.ConclusionIn this series of gastric cancer patients with limited peritoneal dissemination who underwent HIPEC surgery, unfavorable tumor characteristics were common. Survival might be encouraging but disease recurrence was frequent. The efficacy of an HIPEC procedure in improving prognosis is currently being investigated in the PERISCOPE II trial.© 2021 Wiley Periodicals LLC.

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