[Re-thinking of "pelvirectal space"].

Area of Science:

• Anatomical studies
• Surgical anatomy
• Pelvic anatomy

Context:

• Traditional anatomy defined the "pelvirectal space" as separate from the rectum, containing fatty tissue.
• Recent advancements in membrane anatomy theory and understanding of the "rectal mesentery" have prompted a re-evaluation.
• Clinical experience supports a revised interpretation of pelvic anatomical spaces.

Purpose:

• To challenge the existence of the traditional "pelvirectal space".
• To propose the "superior levator ani space" as the accurate anatomical designation.
• To refine understanding of the rectal mesentery and associated structures.

Summary:

• The fat previously attributed to the "pelvirectal space" is identified as mesorectal fat and lateral lymph nodes (LLN), including internal iliac and obturator nodes.
• The study posits that the "pelvirectal space" is anatomically inaccurate.
• The area is redefined as the "superior levator ani space" consistent with membrane anatomy principles.

Impact:

• This anatomical clarification enhances the understanding of pelvic structures.
• It provides a more accurate framework for surgical planning and interpretation of imaging in the pelvic region.
• The findings contribute to the evolving knowledge of rectal mesentery anatomy.