[Cytoreductive surgery for malignant peritoneal tumors].

Cytoreductive surgery is an essential part of a multimodality treatment concept for peritoneal metastases. Indications are primary peritoneal tumors like peritoneal mesothelioma or secondaries from colorectal cancer or pseudomyxoma peritonei. Patients with gastric or ovarian carcinoma or abdominal sarcoma with peritoneal seedings can be treated within studies. Tumor entity, tumor load, and tumor distribution are the most critical issues for patient selection. Complete macroscopic cytoreduction is the strongest prognostic factor and can be achieved by parietal and visceral peritonectomy. The operation should be performed in a standardized manner. Due to possible tumor manifestation in all four quadrants of the abdomen and extensive extraperitoneal dissection, extensive surgical and oncological expertise is prerequisite. Treatment in specialized surgical oncology centers is recommended to minimize morbidity and mortality. The German Society for General and Visceral Surgery is certifying centers of competence for surgical treatment of peritoneal malignancies. Data of all patients are documented in the HIPEC register. The inclusion of patients in studies is recommended.