Abstract
Peritoneal surface malignancy (PSM) refers to the spread of cancer on the parietal peritoneum, the omentum, and the serosal surface of intraabdominal viscera. It is not considered a form of systemic distant metastasis. It is formerly known as peritoneal carcinomatosis. Lesions most commonly associated with PSM include: epithelial lesions of the appendix, colorectal cancer, ovarian cancer, gastric cancer, and diffuse malignant peritoneal mesothelioma. Quantitative assessment for tumor distribution throughout the peritoneal cavity is performed using the peritoneal carcinomatosis index (PCI), as described by Sugarbaker. Operative treatment of PSM is comprised of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC).
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