Brustableitungen
Brustableitungen is not a standard term in German scientific vocabulary. The word appears to be a compound of Brust (breast or chest) and Ableitung (derivation, conduit, or duct), but it is not recognized as a formal anatomical label in major medical references.
In anatomy and physiology, the structures associated with the breast are typically described with established terms
Possible interpretations in non-specialist texts include a casual or metaphorical reference to branches or ducts connected
See also: Brustdrüse, Milchgänge, Brustkorb, Anatomie der Brust.
Note: Given the lack of a widely recognized definition, Brustableitungen should be treated as a nonstandard