Circumferential Resection Margin

**Semantic type:** Clinical Attribute

**Definition:** The non-peritonealised bare area of rectum, comprising anterior and posterior segments, when submitted as a surgical specimen resulting from excision of cancer of the rectum.

**Synonyms:** - CRM - Circumferential - Circumferential Margin - Circumferential Radial Margin - Lateral Resection Margin - Mesorectal Resection Margin - Radial Margin - Radial Resection Margin - circumferential resection margin - circumferential_resection_margin