Breast augmentation is the most commonly performed plastic surgery among women worldwide. With time, implant selection shifted from arbitrary implantation to precise planning. Different methods address the dimensional planning process. Many of them are complex to put into practice, focusing mainly on the breast base. Constricted, short lower pole breasts are morphologically predisposed to complication such as double-bubble deformity. Yet, by focusing on the distance between the nipple on stretch and the inframammary fold, the D-SUN method guides the surgeon to find the most appropriate implant volume for anatomical form-stable silicon implants and IMF incision to avoid complications.Level of evidence IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
Keywords: Augmentation; Breast; D-SUN; Double bubble; Inframammary fold; Preoperative planning.