total mesorectal excision
Also written as: TME — Total Mesorectal Excision
Complete surgical removal of the rectum and surrounding mesorectal tissue envelope.
Full Definition
Total mesorectal excision (TME) is a surgical technique for rectal cancer that involves complete removal of the rectum along with its surrounding mesorectal fat and lymphatics within the intact mesorectal fascia. This precise anatomical dissection follows embryological tissue planes to achieve clear circumferential resection margins and optimal oncological outcomes. TME has become the gold standard for mid and low rectal cancers, significantly reducing local recurrence rates compared to conventional resection techniques. The procedure requires meticulous dissection to preserve pelvic autonomic nerves and maintain genitourinary function.
Usage
Usage note: Commonly abbreviated as TME in surgical literature.
In Context
- "Total mesorectal excision was performed with negative circumferential resection margins." — Pathology report
- "The TME specimen showed excellent mesorectal fascia integrity." — Operative note