A lumpectomy is a surgical procedure used in the treatment of breast cancer. It is also known as breast-conserving surgery, partial mastectomy, or wide local excision. During a lumpectomy, the surgeon removes the tumor or lump along with a margin of normal surrounding tissue. The goal of the surgery is to remove the cancerous tissue while preserving as much of the healthy breast tissue as possible.

Lumpectomy is typically performed for early-stage breast cancer where the tumor is relatively small and hasn't spread extensively. After the lumpectomy, radiation therapy is often recommended to target any remaining cancer cells in the breast and reduce the risk of recurrence.

This approach differs from a mastectomy, where the entire breast is removed. The choice between a lumpectomy and a mastectomy depends on various factors, including the size and location of the tumor, the characteristics of the cancer, and the patient's preferences.

It's important for individuals diagnosed with breast cancer to discuss treatment options, including the potential benefits and risks of lumpectomy, with their healthcare team to make informed decisions based on their specific situation.