Cytoreductive surgery for synchronous and metachronous colorectal peritoneal dissemination: Japanese P classification and peritoneal cancer index

• DOI: 10.1002/ags3.12721
• Publication Date: 2023-07-20T06:48:25Z
• Authors: Akiyoshi Mizumoto; Nobuyuki Takao; Toru Imagami; Byonggu An; Yasumitsu Oe; Takeshi Togawa; Yutaka Yonemura
• Keywords: RD1-811; peritoneal carcinomatosis; colorectal cancer; PCI; RC799-869; Original Articles; Diseases of the digestive system. Gastroenterology; 03 medical and health sciences; 0302 clinical medicine; classification; cytoreductive surgery; Surgery

Abstract Aim The outcomes of cytoreductive surgery (CRS) for synchronous and metachronous colorectal peritoneal dissemination were investigated using the Japanese P classification cancer index (PCI). Methods CRS was performed in 111 cases 115 dissemination. PCI determined at time laparotomy. Results In group, 5‐year overall survival rates after P1/P2 P3 51% 13%, respectively. Even P3, patients achieved macroscopic complete resection (CC‐0), with a rate 40%. When classified into 0–9, 10–19, 20–29, 30–39, CC‐0 93%, 70%, 6%, 0% cases, respectively, 0–9 41%. 62% 22% 10–19; not observed ≥ 20. significantly associated postoperative prognosis both Conclusion dissemination, must be P1 P2 or those < 10, while detailed examination is required cases. should considered when score <20.