Retroperitoneal Nephrometry Scoring System (RETRO) for Minimal-Invasive Partial Nephrectomy

Area of Science:

• Urology
• Surgical Oncology

Background:

• Partial nephrectomy is a standard treatment for renal tumors.
• Minimally invasive approaches, including the retroperitoneal approach, are increasingly utilized.
• Standardized risk assessment tools are needed to optimize surgical planning and patient outcomes.

Purpose of the Study:

• To propose a standardized scoring system for renal tumors undergoing partial nephrectomy.
• To focus on mini-invasiveness and the retroperitoneal approach.
• To develop a tool for risk evaluation and surgical approach selection.

Main Methods:

• Prospective enrollment of 105 patients undergoing retroperitoneal partial nephrectomy.
• Collection of perioperative characteristics including demographics, blood tests, imaging, operation time, blood loss, clamping time, complications, and American Society of Anesthesiologists (ASA) score.
• Development of an algorithm (RETRO score) to predict postoperative complications.

Main Results:

• Symptoms, ASA score, and the developed RETRO score were significantly correlated with postoperative complications.
• Tumor size, ischemia time, and operation time were not significant predictors.
• The adjusted RETRO score was an independent factor in predicting complication rates (p = 0.006).

Conclusions:

• The RETRO score simplifies risk evaluation for partial nephrectomy.
• It is particularly beneficial for robot-assisted laparoscopic surgeries via the retroperitoneal approach.
• The RETRO score serves as a criterion for selecting surgical approaches and evaluating surgical complexity.