Accurate prediction of the amount of in situ tumor in palpable breast cancers by core needle biopsy: Implications for neoadjuvant therapy
Neoplasm Recurrence, Local
Paget's Disease, Mammary
Core needle biopsy can identify palpable breast tumors that are predominantly or completely in situ, and, thus, avoid unnecessary neoadjuvant chemotherapy. It also can demonstrate that a tumor is predominantly invasive, but cannot rule out small invasive foci. For that purpose, complete surgical excision of the tumor is required.