Regimens of Intraperitoneal Chemotherapy for Peritoneal Carcinomatosis from Colorectal Cancer

Although systemic chemotherapy has been improved, peritoneal carcinomatosis remains a factor of poor prognosis in patients with colorectal cancer. In order to achieve a higher drug concentration in the peritoneal cavity, intraperitoneal chemotherapy has been performed. However, the optimal regimen for intraperitoneal chemotherapy has not been determined. In this review of intraperitoneal chemotherapy for colorectal cancer, we summarize regimens of hyperthermic intraperitoneal chemotherapy (HIPEC) and other intraperitoneal chemotherapy modalities, such as early postoperative intraperitoneal chemotherapy (EPIC) and sequential postoperative intraperitoneal chemotherapy (SPIC). Mitomycin C and oxaliplatin are the most common chemotherapeutic agents used for HIPEC. Some combination therapies such as those involving bevacizumab, H₂O₂, and amifostine have potential to increase HIPEC efficacy. 5-Fluorouracil is used mainly for EPIC and SPIC. Some new agents such as paclitaxel, melphalan, and various nanoparticles have been developed. These novel chemotherapeutic agents may achieve clinical implementation in the future.

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