Pelvic anatomy as a factor in laparoscopic rectal surgery: a prospective study

Area of Science:

• Colorectal Surgery
• Surgical Oncology
• Pelvic Anatomy

Background:

• Laparoscopic total mesorectal excision (L-TME) is a standard procedure for rectal cancer.
• Pelvic anatomy can influence surgical difficulty and outcomes.
• Predicting L-TME difficulty is crucial for surgical planning.

Purpose of the Study:

• To evaluate factors influencing the difficulty of L-TME.
• To specifically assess the role of pelvic anatomical measurements in L-TME difficulty.
• To identify anatomical risk factors for prolonged operative time and intraoperative complications.

Main Methods:

• Prospective enrollment of 74 patients undergoing L-TME.
• Analysis of patient and tumor factors, including MRI-based pelvic measurements.
• Correlation of pelvic dissection time with anatomical variables to define risk factors.
• Categorization of patients into easy, moderate, and difficult groups based on risk factors.

Main Results:

• Long sacral length, shallow sacral angle, narrow intertuberous diameter, and large tumor size were associated with longer pelvic dissection time.
• Difficult L-TME cases were significantly linked to intraoperative complications.
• No significant association was found between pelvic anatomy and postoperative complications.

Conclusions:

• Pelvic anatomical factors and tumor size are critical considerations for L-TME planning.
• While not affecting postoperative outcomes, anatomical challenges increase intraoperative difficulty and complication risk.
• Preoperative assessment of pelvic dimensions and tumor size can aid in anticipating L-TME complexity.