# OnCo record circumferential-resection-margin (term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/terms/circumferential-resection-margin/>
  a schema:DefinedTerm ;
  onco:kind "term" ;
  schema:identifier "circumferential-resection-margin" ;
  schema:name "Circumferential resection margin (rectal cancer)"@en ;
  schema:alternateName "CRM"@en, "circumferential margin"@en, "radial resection margin"@en, "lateral resection margin"@en, "mesorectal fascia"@en, "threatened margin"@en ;
  schema:description "The circumferential resection margin is the side surface of the removed rectum, the plane the surgeon cut along. If cancer cells lie within a millimetre of it, the cancer is much more likely to come back in the pelvis. It is measured on the scan before surgery and on the specimen afterwards, and it is the single reading that most shapes rectal cancer treatment."@en ;
  schema:url <https://onco.cc/terms/circumferential-resection-margin/> ;
  schema:dateModified "2026-09-24"^^xsd:date ;
  schema:sameAs <https://en.wikipedia.org/wiki/Total_mesorectal_excision> ;
  schema:citation <https://doi.org/10.1016/s0140-6736(86)92612-7>, <https://doi.org/10.1002/bjs.1800691019>, <https://doi.org/10.1200/jco.2007.12.7027>, <https://doi.org/10.1136/bmj.38937.646400.55>, <https://doi.org/10.1097/sla.0000000000001193>, <https://www.nice.org.uk/guidance/ng151/chapter/Recommendations> ;
  onco:tag "gi", "colorectal" ;
  onco:cancers <https://onco.cc/cancers/colorectal/>, <https://onco.cc/cancers/rectal-cancer/>, <https://onco.cc/cancers/colon-cancer/>, <https://onco.cc/cancers/colorectal-micropapillary-carcinoma/> ;
  onco:technologies <https://onco.cc/technologies/mri/>, <https://onco.cc/technologies/histopathology-ihc/>, <https://onco.cc/technologies/imrt-igrt/> ;
  onco:terms <https://onco.cc/terms/total-mesorectal-excision/>, <https://onco.cc/terms/resection-margins/>, <https://onco.cc/terms/watch-and-wait-rectal-cancer/>, <https://onco.cc/terms/total-neoadjuvant-therapy/>, <https://onco.cc/terms/tnm-staging/> .