mesorectum

During rectal surgery and mesorectum excision, dissection along the avascular aveolar plane between these two fascias, facilitates a straightforward dissection and preserves the sacral vessels and hypogastric nerves.

Thereafter all rectal excisions have included the mesorectum, care being taken at the pelvic brim to identify and preserve the pelvic nerves and not to enter Dennonvilliers fascia during the anterior rectal dissection.