Peritonectomy procedures for peritoneal surface malignancies: PSOGI-ESGO-ISSPP Lyon consensus.

Area of Science:

• Surgical Oncology
• Peritoneal Surface Malignancies
• Cytoreductive Surgery

Background:

• Peritonectomy procedures for peritoneal surface malignancies lack uniform nomenclature and execution.
• Variability exists between surgeons and institutions regarding peritonectomy techniques.

Purpose of the Study:

• To establish a uniform nomenclature for peritonectomy procedures.
• To define subregions and boundaries for each peritonectomy procedure.
• To improve standardization in surgical reporting for peritoneal malignancies.

Main Methods:

• Modified Delphi technique involving expert surgeons.
• Two rounds of voting by a panel of experts in cytoreductive surgery.
• Consensus defined as >75% agreement on nomenclature and procedural definitions.

Main Results:

• High consensus (98.1%) reached on 207 of 211 questions.
• Agreement achieved on peritonectomy subdivisions and procedural boundaries.
• A standardized reporting form was developed to document surgical extent.

Conclusions:

• A revised, standardized nomenclature for peritonectomy procedures was successfully developed.
• The new reporting format is crucial for advancing research on peritoneal resection extent.
• Standardization will enhance consistency in treating peritoneal surface malignancies.