Controversies in abdominoperineal excision.

Area of Science:

• Surgical Oncology
• Colorectal Surgery
• Pelvic Floor Anatomy

Background:

• Abdominoperineal excision (APE) is a critical surgery for low rectal cancer.
• Outcomes following traditional APE are frequently suboptimal and inconsistent.
• Recent advancements propose new APE classifications based on pelvic anatomy.

Purpose of the Study:

• To introduce and define a new conceptual framework for Abdominoperineal excision (APE).
• To categorize APE procedures based on pelvic and pelvic floor anatomy.
• To highlight the potential benefits and controversies surrounding extralevator APE (ELAPE).

Main Methods:

• Classification of APE into three distinct types: intersphincteric APE, extralevator APE (ELAPE), and ischioanal APE.
• Review of anatomical considerations for each APE variation.
• Analysis of reported outcomes and ongoing debates regarding ELAPE.

Main Results:

• Improved outcomes have been associated with the extralevator APE (ELAPE) technique.
• The new classification system provides a structured approach to understanding APE variations.
• Disagreements persist concerning the extent of pelvic floor removal and reconstruction methods in ELAPE.

Conclusions:

• The refined classification of Abdominoperineal excision (APE) offers a clearer understanding of surgical options.
• Extralevator APE (ELAPE) shows promise for better patient outcomes in low rectal cancer.
• Further research and consensus are needed to address the controversies surrounding ELAPE techniques.