Definition. 1  A lumpectomy is a type of surgery used to treat breast cancer. It is considered breast-conserving surgery because in a lumpectomy, only the malignant tumor and a surrounding margin of normal breast tissue are removed. 2  Lumpectomy is a surgical treatment for newly diagnosed breast cancer. It is estimated that at least 50% of women with breast cancer are good candidates for this procedure. The location, size, and type of tumor are of primary importance when considering breast cancer surgery options.
A triadic melody is a melody made up of triads. Triads are chordsconsisting of three tones. The triad consists of the root tone, amajor or minor.
A major triad can also be described as a major third interval with a minor third interval on top, or as a root note, a note 4 semitones (half steps) higher than the root, and a note 7 semitones higher than the root. Major and minor third in a major chord: major third on bottom, minor third on top Play (helpÂ·info) .