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.
Quick GuideBreast Cancer Diagnosis and Treatment
Subscribe to MedicineNet's Cancer Report Newsletter
Last Editorial Review: 6/9/2016