Lumpectomy (aka: tylectomy) is a common surgical procedure designed to remove a discrete lump, usually a benign tumor or breast cancer, from an affected man or woman's breast. As the tissue removed is generally quite limited and the procedure relatively non-invasive, compared to a mastectomy, a lumpectomy is considered a viable means of "breast conservation" or "breast preservation" surgery with all the attendant physical and emotional advantages of such an approach.
Ductal carcinoma in situ
When a lumpectomy is performed for DCIS, lymph node biopsy and radiation therapy may be performed. For DCIS, chemotherapy is not recommended, but tamoxifen may be recommended for tumors which contain an abundance of estrogen receptors.
Invasive Ductal Carcinoma
For patients with invasive ductal carcinoma who have lumpectomies, lymph node biopsy and radiation therapy are usually recommended. Adjuvant chemotherapy is often recommended, but it may not be recommended if the tumor is small and benign-appearing under the microscope and there are no lymph node metastases. For larger tumors, neoadjuvant chemotherapy may be recommended.