Assertion: melanoma's stage | /r/DefinedAs | local spread
Facets:
value: in staging melanoma
type: OTHER
value: through lymphatic drainage
type: MANNER
Source sentences:
text: In staging melanoma, stage 3 is defined as local spread through lymphatic drainage (sentinel node biopsy helps with staging here), and stage 4 is defined as distant spread (metastasis) to other organs, presumably by spread through the bloodstream.