Continence-preserving procedures for benign and malignant disease

Area of Science:

• Colorectal Surgery
• Gastroenterology
• Surgical Oncology

Background:

• Ulcerative colitis and rectal carcinoma rarely involve the anal sphincter musculature.
• The anal sphincter plays a vital role in maintaining fecal continence.
• Sphincter preservation is often feasible even after extensive rectal or colorectal resection.

Purpose of the Study:

• To review the optimal surgical management of the anal sphincter during rectal excision.
• To evaluate the benefits of retaining distal rectal segments above the high-pressure zone.
• To discuss the use of enteric substitutes and reconstructive techniques like pouch-anal anastomosis.

Main Methods:

• Literature review focusing on anal sphincter function, rectal excision techniques, and reconstructive options.
• Analysis of clinical outcomes based on sphincter preservation, neorectum characteristics, and surgical skill.

Main Results:

• The anal sphincter should be preserved in most patients undergoing surgery for ulcerative colitis or rectal carcinoma.
• Retention of a distal rectal segment may be beneficial in select rectal carcinoma cases.
• The choice of enteric substitute and reconstruction method impacts functional results.

Conclusions:

• Sphincter preservation is key to achieving good continence after rectal surgery.
• Careful consideration of surgical technique, neorectum physiology, and surgeon expertise is essential for optimal patient outcomes.