Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Lumpectomy
Medically reviewed by Min Clinic Staff | Updated: January 2026
Lumpectomy: The surgical removal of a small tumor, which may be benign or cancerous. In common use, lumpectomy refers especially to removal of a lump from the breast. Lumpectomy, often with chemotherapy or radiation therapy, can be an alternative to mastectomy in cases of nonmetastatic breast cancer.