Introduction To show extensive peritonectomy of ovarian cancer by region partitioning algorithm under the guidance of membrane anatomy.

Description The theory of membrane anatomy is based on the premise that cell lineages of different organs do not mix at the boundary during embryonic development, the surface of each organ is covered by an envelope like structure. The key to success is to correctly identify the envelope of organs, find the white filaments (also called angel hair) in the membrane space and enter the right anatomical interface between organs. The scope of extensive peritonectomy includes the resection of all parietal peritoneum, part of visceral peritoneum, some mesentery and ligaments. The region partitioning algorithm was used to divide the whole abdominopelvic cavity into three parts by taking two lines, one was the upper edge of true pelvis, the other was the lowest margin of costal arch on both sides. Peeling the peritoneum by antagonistic drawing from the median abdominal incision to both sides of the lateral peritoneum by the way of envelopment from the periphery to the center.

Conclusion/Implications The implementation of extensive peritonectomy by region partitioning algorithm under the guidance of membrane anatomy marked R0 cytoreductive surgery for ovarian cancer changed from the removal of scattered lesions or organs to a set of orderly and complete narrative surgical march, which can not only improved the thoroughness and safety of the operation, but also avoided omitting the invisible peritoneal metastasis to the naked eye, helped surgeons to clarify technique routes, and reached the realm of nature.