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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.
Definition & Overview. Myectomy is the surgical procedure of treating hypertrophic cardiomyopathy. It involves removing a part of the septal wall that has thickened and resulted in limited blood flow coming from the left ventricle to the aorta.