A retrospective study of cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy for treatment of gastric cancer with synchronous peritoneal metastasis.

Introduction Peritoneal metastasis secondary to gastric cancer is associated with poor prognosis. Recent studies have shown that cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) may be an efficacious treatment option for an otherwise palliative condition. Methods A retrospective single institutional study of patents diagnosed with gastric carcinoma and peritoneal metastasis and treated with CRS and HIPEC from February 2015 to December 2019. Results Sixteen patients with gastric cancer and peritoneal carcinomatosis were treated with CRS and HIPEC. Three patients underwent upfront surgery, and five patients underwent interval surgery. The mean peritoneal cancer index (PCI) was 3.5, and adequate complete cytoreduction (CC) score of 0/1 was achieved in all patients. All patients received HIPEC with mitomycin C. Major surgical complications were in 12.5% of patients. Grade I surgical site infection was present in one patient. Three patients had prolonged gastrointestinal (GI) recovery. The 30-day mortality was zero. Median follow-up time was 39 months. The median progression-free survival (PFS) was 12 months (95% conﬁdence interval [CI] 6.86–17.13). The median overall survival (OS) was 17 months (95% CI 6.36–27.64). Conclusion Multidisciplinary treatment of perioperative chemotherapy with CRS and HIPEC is a promising treatment option, which may prolong survival in selected patients, and large randomized clinical trials are warranted for it to become standard of care.

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Cytoreductive Surgery Combined with Hyperthermic Intraperitoneal Chemotherapy for Peritoneal Metastasis from Colorectal Cancer

Clinics in Colon and Rectal Surgery ◽

10.1055/s-0040-1714242 ◽

2020 ◽

Vol 33 (06) ◽

pp. 372-376

Author(s):

Hideaki Yano

Keyword(s):

Colorectal Cancer ◽

Intraperitoneal Chemotherapy ◽

Cytoreductive Surgery ◽

Peritoneal Metastasis ◽

Hyperthermic Intraperitoneal Chemotherapy ◽

Peritoneal Cancer Index ◽

Systemic Disease ◽

Good Reason ◽

Standard Of Care ◽

Peritoneal Cancer

AbstractPeritoneal metastasis from colorectal cancer (PM-CRC) is used to be considered a systemic and fatal condition; however, it has been growingly accepted that PM-CRC can still be local disease rather than systemic disease as analogous to liver or lung metastasis.Cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC) is now considered an optimal treatment for PM-CRC with accumulating evidence. There is a good reason that CRS + HIPEC, widely accepted as a standard of care for pseudomyxoma peritonei (PMP), could be a viable option for PM-CRC given a similarity between PM-CRC and PMP.Recent years have also seen that modern systemic chemotherapy with or without molecular targeted agents can be effective for PM-CRC. It is possible that neoadjuvant or adjuvant chemotherapy combined with CRS + HIPEC could further improve outcomes.Patient selection, utilizing modern images and increasingly laparoscopy, is crucial. Particularly, diagnostic laparoscopy is likely to play a significant role in predicting the likelihood of achieving complete cytoreduction and assessing the peritoneal cancer index score.

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