Nipple-areolar complex (NAC) reconstruction greatly improves satisfaction with overall breast reconstruction in patients with NAC loss due to breast cancer excision [1]. Recreating the NAC is generally the last step of breast reconstruction because it cannot be performed until the breast configuration is stabilized after breast mound reconstruction. NAC reconstruction methods include one or more of the following techniques: the local flap technique, free nipple grafting, the use of autogenous implants, and filler injection [1-3].

In the local flap technique, the epidermis, dermis, and subcutaneous tissue are used in a variety of patterns, such as the C-V flap, arrow flap, and boomerang flap [4-6]. Although local flaps provide less donor site morbidity than free nipple grafting, their use leaves an additional scar. Therefore, if a previous mastectomy scar is located near the nipple, a flap that includes the scar is elevated in order to minimize the scar. However, mastectomy scars are usually located on only one side of the nipple, so an additional scar on the opposite side is inevitable when utilizing current techniques that require flaps on both sides of the nipple. Herein, we present a novel method for nipple reconstruction without leaving an additional scar by using a teardrop-shaped flap located on only one side of the nipple.

NAC reconstruction was performed using a vertical scar on a 61-year-old patient who had undergone an inverted-T reduction mammoplasty. The patient had lost her NAC prior to reduction mammoplasty in previous breast-conserving surgery (BCS) with nipple resection.

The new technique proposed in this paper utilizes a modified boomerang flap that has a reverse teardrop shape with two wings folded to one side (Fig. 1). First, the patient takes a sitting position, and a circle is drawn on the site where the new nipple is to be located. The radius of this circle will be the height of the new nipple, and taking into account the expected postoperative decrease in nipple size, the radius of the circle should be 1.5 times larger than the height of the opposite nipple. Then, the clinician marks the wing’s tip, which is located at four times the radial distance from the center of the circle along the direction of the scar, and two tangential lines are drawn from that point to the circle’s border. The location of the tip can be determined based on the projection of the contralateral nipple.

An incision is made using a No. 15 blade, leaving out one-third of the circle opposite the wing, and the designed flap is elevated. Then, the wing is rolled cylindrically. The remaining distal part of the wing is excised or de-epithelialized for use in filling the dead space inside the nipple to provide greater volume. The opposite wing forms a lid, and the distal portion of the wing is also de-epithelialized and used similarly. Although it was not utilized in this case, acellular dermal matrix can be used for the maintenance of nipple projection if the subcutaneous tissue is thin. The nipple and donor sites are closed using a simple suture technique, and a silastic drain is placed inside the donor site and removed the next day (Fig. 2).

The immediate postoperative projection of the nipple was 10 mm, whereas it was 9 mm and 7.5 mm at 1 and 7 months after surgery, respectively. In addition, the patient underwent a tattooing procedure for areolar reconstruction 4 months after nipple reconstruction (Fig. 3).

Nipple reconstruction improves patients’ satisfaction with the aesthetic results of reconstruction, and it can be easily performed under local anesthesia. Various methods have been developed for nipple reconstruction and are performed according to the patient’s condition and the surgeon’s preference. Nevertheless, there is no magic-bullet nipple reconstruction method that is ideal for all cases. Free nipple grafting has the advantage of providing a new nipple with a similar texture and pigmentation as the other nipple [1]. However, this technique may not be feasible, as it depends on the size of the opposite nipple and on the morbidity at the donor site [7]. Conversely, although it is possible to perform nipple reconstruction with a local flap regardless of the size of the contralateral nipple, an additional scar cannot be avoided when such a local flap technique is used. For patients who have previously undergone operations such as mastectomy or reduction mammoplasty, nipple reconstruction using a local flap designed along the previous scar can be a desirable method.

However, most mastectomy scars and reduction mammoplasty scars are located on one side of the nipple. Since existing methods such as the C-V flap, arrow flap, and boomerang flap require flaps on both sides of the nipple, an additional scar is inevitable [4-6]. Our method involves the elevation of a flap from only one side of the nipple, so the formation of an additional scar can be avoided. In the present case, the patient had previously undergone BCS with NAC excision, and nipple reconstruction could have been performed using the existing BCS scar. However, as nipple construction should be the last step of breast configuration, it was performed after the patient’s reduction mammoplasty using the vertical scar. The method described herein is also applicable to patients who have undergone mastectomy with an existing linear incisional scar in any direction adjacent to the nipple position.

This technique has two main limitations. The first limitation is the decrease in the volume of the breast mound at the donor site. Therefore, this technique should be performed when the tissues around the donor site have sufficient redundancy. Another limitation is that the smaller third of the circle on the opposite side may bulge in some cases. This complication can be resolved with an intraoperative pinch suture, although that technique was not performed in this study.

According to the literature, the size of the nipple decreases over the first 6 postoperative months after nipple reconstruction due to retraction forces from the surrounding tissues and tissue contraction of the flap [2]. The average reduction in nipple size observed when using a skate flap or star flap is 43%, while our patient showed a reduction of only 25% [8]. This is because teardrop flaps are subdermal pedicled flaps that have a lower retraction force than centrally based flaps. Their design is simple, which causes less scarring and contracture [2]. Further case studies are required to clarify the reduction of nipple size using our reconstruction method. However, the teardrop flap is an easy method of nipple reconstruction that achieves a proper degree of projection and width without additional scar formation.