Figure 1: The peritoneal cancer index (PCI). This index combines size and distribution parameters to obtain a numerical score. The lesion size scores (0–3) in each of the abdominopelvic regions ( 𝑛 = 1 3 ) are summed to give the peritoneal cancer index (range 0–39) [13]. This graphic is published by permission from Dr. P. H. Sugarbaker.