Two-Stage Surgical Management of Accessory Breast Tissue With Pedicled Breast Tissue: A Case Report of Asymmetry Correction.

Accessory breast tissue is a relatively common variant of ectopic breast tissue. It defines a tissue that can be seen in conjunction with a nipple, areola, and underlying glandular tissues and can develop in addition to the normal breast tissue. While swelling may be accompanied by symptoms such as pain that worsens with the menstrual period, lactation, and limitation of shoulder joint movements, aesthetic concerns also constitute an important part of the surgical needs of patients. An 18-year-old patient without any known comorbidities attended because of a developmental disorder in her left breast that has existed since birth and an accessory breast tissue containing the nipple and areola in the upper-outer quadrant of the left breast. The surgical aim was to excise the patient's accessory breast tissue and ensure symmetry, and a two-stage surgical intervention was planned. In the first stage, the accessory breast tissue in the upper-outer quadrant of the breast was transposed preserving the 2nd and 3rd Internal Mammary Artery-based perforators by passing it through a subcutaneous tunnel and folding it in its ideal place. At second stage, the reduction mammoplasty surgery was performed on the right breast to ensure symmetry with the left breast, and resection was performed on the nipple in the middle lower quadrant of the left breast. At the end, acceptable symmetry and patient satisfaction were achieved.