# OnCo record intraoperative-margin-assessment-breast (technology). 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/technologies/intraoperative-margin-assessment-breast/>
  a schema:MedicalTherapy ;
  onco:kind "technology" ;
  schema:identifier "intraoperative-margin-assessment-breast" ;
  schema:name "Intraoperative margin assessment in breast-conserving surgery"@en ;
  schema:alternateName "intraoperative margin assessment"@en, "frozen section of lumpectomy margins"@en, "specimen radiography"@en, "MarginProbe"@en, "radiofrequency spectroscopy margin probe"@en, "cavity shave margins"@en ;
  schema:description "Ways of checking, before the operation ends, whether cancer reaches the edge of the breast tissue removed, so the surgeon can take more there and then instead of operating again days later. In randomised trials a radiofrequency probe cut second operations from 25.8 to 19.8 per cent, and routinely shaving an extra layer from the cavity cut them from 21 to 10 per cent."@en ;
  schema:url <https://onco.cc/technologies/intraoperative-margin-assessment-breast/> ;
  schema:dateModified "2026-10-20"^^xsd:date ;
  schema:citation <https://doi.org/10.1097/sla.0000000000001897>, <https://doi.org/10.1371/journal.pone.0248768>, <https://doi.org/10.1245/s10434-014-3602-0>, <https://doi.org/10.1056/NEJMoa1504473>, <https://doi.org/10.1136/bmj.e4505>, <https://doi.org/10.1245/s10434-014-3480-5> ;
  onco:status "established" ;
  onco:tag "precision", "evidence:moderate" ;
  onco:related <https://onco.cc/ideas/idea-fund-intraoperative-imaging-trials/>, <https://onco.cc/ideas/idea-moon-image-guided-surgery-everywhere/>, <https://onco.cc/terms/breast-conserving-surgery-versus-mastectomy/> ;
  onco:cancers <https://onco.cc/cancers/breast-cancer/>, <https://onco.cc/cancers/breast-hr-positive/>, <https://onco.cc/cancers/breast-her2-positive/>, <https://onco.cc/cancers/tnbc/>, <https://onco.cc/cancers/ductal-carcinoma-in-situ/> ;
  onco:sections <https://onco.cc/fronts/surgery/>, <https://onco.cc/fronts/imaging/>, <https://onco.cc/fronts/diagnostics/> ;
  onco:technologies <https://onco.cc/technologies/fluorescence-guided-surgery/>, <https://onco.cc/technologies/intraoperative-fluorescence-imaging-systems/>, <https://onco.cc/technologies/mammography/>, <https://onco.cc/technologies/ultrasound/> ;
  onco:drugs <https://onco.cc/drugs/pegulicianine/> ;
  onco:terms <https://onco.cc/terms/breast-margins-and-re-excision/>, <https://onco.cc/terms/lumpectomy/>, <https://onco.cc/terms/resection-margins/>, <https://onco.cc/terms/wide-local-excision/>, <https://onco.cc/terms/dcis/> ;
  onco:trials <https://onco.cc/trials/insite/> .