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Segmentectomy is the excision (removal) of a portion of any organ or gland. The procedure has several variations and many names, including segmental resection, wide excision, lumpectomy, tumorectomy, quadrantectomy, and partial mastectomy.
Mastectomy is the surgical removal of a breast. Surgery is presently the most common treatment for breast cancer. Following mastectomy, immediate or delayed breast reconstruction is possible in many instances. There are several different types of surgical procedures used to treat breast cancer.