Source:http://linkedlifedata.com/resource/umls/id/C1709687
NCI: A role used to assert a relationship between a surgical procedure and its target anatomy, specifically that a particular procedure always involves partial excision of the specified anatomy. This role is applicable to procedures or techniques that involve excision of solid tissues or organs, and where partial excision is explicit or can be inferred (e.g. biopsy). The domain and range for this role are 'Clinical or Research Activity' and 'Anatomic Structure, System, or Substance', respectively.