Most cases of symmastia are "acquired," the result of an unfavorable result of breast augmentation. However symmastia also occurs and a "congenital" anomaly, and is quite rare. Most of my practice is breast surgery, and I have never seen a case. There are techniques for correction published. Direct incisions over the sternum (breast bone) are discouraged because of a high incidence of unfavorable scarring. Encouraged, instead, are incisions commonly used in aesthetic breast surgery, using incisions around the areola or in the breast fold. Call around in your community, though you may not find anyone who has treated one of these. Choose an experienced plastic surgeon who does a high volume of breast surgery, and you are likeliest to find someone who will have good judgement in dealing with this unusual anomaly. Thanks and best wishes.
