Peritoneal PCI Score

The surgeon divides the abdomen and pelvis into regions, including areas of the small bowel. In each region, the size of the largest tumor deposit is scored on a small scale, from no visible disease up to large or merged tumors. Those region scores are added together to produce the total PCI. A low number means limited disease; a higher number means more widespread tumor. Because the score depends on direct viewing, it is usually given during a laparoscopy or open operation rather than from scans alone.

Surgeons use the PCI to judge whether they can remove all visible tumor, which is the goal of cytoreductive surgery. Lower scores generally make complete removal more achievable and are associated with better results after surgery combined with heated chemotherapy. Higher scores do not automatically rule out an operation, but they make the decision more complex. Location matters too: disease in certain spots, such as extensive involvement of the small bowel, can make complete removal difficult even when the total score is moderate.

Ask your surgeon for your PCI and how they interpret it. Some centers set their own thresholds for recommending surgery, so two teams may reach different conclusions from similar scores. If your score is high, ask whether systemic treatment first could make surgery possible later. If a laparoscopy has not been done, ask whether one is planned and what it will show. Keeping the operative note that records your PCI is useful for future opinions and trial applications. Your surgeon may also describe how complete the removal was using a separate completeness score, which is worth asking about after any operation.

1. 1

   Ask your surgeon to tell you your PCI score and which regions contributed most.

2. 2

   Request a copy of the operative note from your laparoscopy or surgery.

3. 3

   Ask whether treatment before surgery could make complete tumor removal more likely.

4. 4

   Seek a second opinion from another peritoneal surgery team if your score is borderline.