total mesorectal excision
Pronunciation: TOH-tuhl MEZ-oh-rek-tuhl ek-SIZH-uhn
A precise surgical technique for rectal cancer removal that completely excises the tumor within its surrounding fatty tissue envelope.
Full Definition
Total mesorectal excision (TME) represents the gold standard surgical approach for mid and low rectal cancers, involving sharp dissection along embryological planes to remove the rectum with its surrounding mesorectal fat and lymph nodes intact. This technique significantly improved local recurrence rates and survival outcomes compared to conventional resection methods. TME requires meticulous attention to preserving the mesorectal fascia integrity while avoiding perforation of the tumor-containing tissue. Quality indicators include circumferential resection margin status and completeness of the mesorectal excision specimen.
Usage
Usage note: Spell out on first use, then TME is acceptable; emphasize 'total' to distinguish from partial techniques.
In Context
- "The specimen demonstrated complete total mesorectal excision with negative circumferential margins." — Pathology report
- "Laparoscopic total mesorectal excision was performed with excellent tissue quality." — Operative note