Cytoreductive surgery with HIPEC is a specialized surgical technique used in the treatment of advanced abdominal cancers, such as pseudomyxoma peritonei and peritoneal mesothelioma. It is also done for other cancers with peritoneal metastasis. The procedure involves the removal of cancerous tissue and the administration of heated chemotherapy directly into the abdominal cavity, which can improve survival rates and quality of life for some patients.