Factors Prognostic for Peritoneal Metastases from Colorectal Cancer Treated with Surgery

• Main Authors: Chen C, Wang J, Zhao Y, Ge X, Wang Z, Yu S, Song Y, Ding K, Zhang S, Zheng S, Sun L
• Format: Article
• Language: English
• Published: Dove Medical Press 2020-10-01
• Series: Cancer Management and Research
• Subjects: ovarian metastases. prognosis factors. cytoreductive surgery. hyperthermic intraperitoneal chemotherapy
• Online Access: https://www.dovepress.com/factors-prognostic-for-peritoneal-metastases-from-colorectal-cancer-tr-peer-reviewed-article-CMAR

Chao Chen,1,* Jian Wang,1,* Yamei Zhao,1 Xiaoxu Ge,1,2 Zhanhuai Wang,1 Shaojun Yu,1 Yongmao Song,1 Kefeng Ding,1 Suzhan Zhang,1,2 Shu Zheng,1,2 Lifeng Sun1 1Department of Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China; 2Department of Cancer Institute, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China*These authors contributed equally to this workCorrespondence: Lifeng SunThe Second Affiliated Hospital, Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, Zhejiang 310009, People’s Republic of ChinaTel [phone]Email [e-mail]: To analysis factors prognostic for peritoneal metastases (PM) from colorectal cancer (CRC) treated with surgery using data from two sources and investigate the origin and effective treatment of ovarian metastases (OM).Patients and Methods: Data from CRC patients with PM who had undergone surgery were collected from the Surveillance, Epidemiology, and End Results (SEER) database (n = 639) and a single Chinese institution (n = 60). Cumulative survival was evaluated by Kaplan–Meier analysis. Factors associated with overall survival (OS) and progression-free survival (PFS) prognosis were assessed using Cox’s proportional hazard regression models.Results: Median OS values for patients who underwent surgery were 19 and 32 months in the SEER database and Chinese center, respectively. Age was an independent predictor of OS in both datasets. Signet-ring cell cancer and perineural invasion were independent predictors of inferior OS only in the SEER dataset, while completeness of cytoreduction (CC) and peritoneal carcinomatosis index were independent predictors for OS and PFS only in the Chinese center. Median OS was 24 months in CRC patients with PM alone and 36 months in those with both PM and OM (p = 0.181). Further, median PSF in patients with PM alone was 10 months, while that in individuals with both PM and OM was 20 months (p = 0.181).Conclusion: Surgical treatment of the primary and metastatic sites is effective and safe for CRC patients with PM. CC-0 is recommended for improved prognosis. Moreover, OM should be recognized as a feature of PM, and cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy is beneficial for CRC patients with OM.Keywords: ovarian metastases, prognosis factors, cytoreductive surgery, hyperthermic intraperitoneal chemotherapy