ABSTRACT

Objective:

This study aimed to investigate whether there was an increase in the number of postoperative complications in patients undergoing reduction mammoplasty depending on the technique used (i.e., pedicle type, skin incision pattern), existence of concomitant diseases, and presence of other risk factors.

Materials and Methods:

A total of 186 patients who underwent breast reduction between 2013 and 2018 (bilateral, n = 170; unilateral, n = 16) were included in the study. A retrospective review of the data of patients who underwent reduction mammoplasty, which was performed by the same surgical team in a single institution over a 6-year period, was carried out. Superomedial, superior, and inferior pedicles were used in 99, 55, and 32 patients, respectively. The median follow-up period was 4 years.

Results:

The median patient age was 45 (range: 16–75) years. The median total reduction weight was 2,194 (range: 80–4,800) grams. The median distance between the sternal notch and nipple was 31 cm (range: 24–45 cm) for the right breast and 30 cm (range: 22–45 cm) for the left breast. The overall complication rate was 6.9%. The complication rates in patients with and without any concomitant diseases were 10.2% and 4.6%, respectively. The overall complication rate was significantly higher in patients with smoking habit, accessory breasts, progesterone use, cerebrovascular disease, morbid obesity (Body Mass Index ≥40 kg/m²), and thalassemia.

Conclusion:

Our analysis shows that the presence of concomitant diseases increases the risk for postoperative complications in patients who underwent reduction mammoplasty. Our findings do not suggest that any of the techniques have significant superiority to each other in terms of pedicle safety and overall complication rate.

Keywords:

Breast reduction, superomedial pedicle, superior pedicle; inferior pedicle

Introduction

Although the main purpose of breast reduction is to reduce weight and volume of the breast, the aesthetic result is equally important. Excellent methods have been identified, and interest has shifted toward technical advancements that provide improved as well as reliable aesthetic results. At the same time, great importance is devoted to the protection of sensory and physiological functions.

Women want to reduce their breasts for both physical and psychological reasons. Heavy, saggy breasts; neck, back, waist, shoulder, and arm pain; and scars on the shoulders due to the compression of bra straps are among their complaints. As pain may become chronic, it may be at risk to maceration and dermatoses in subcutaneous areas. From a psychological aspect, very large breasts could be a focus of serious distress for young women as well as young girls. In unilateral asymmetric hypertrophy, this distress increases further (1).

Various studies have demonstrated the role of reduction mammoplasty in reducing physical symptoms and increasing quality of life (2, 3, 4, 5, 6, 7, 8, 9). Reduction mammoplasty has not only been shown to help resolve these physical symptoms and functional limitations in women, but has also been shown to significantly improve self-confidence and reduce emotional anxiety and depression (10, 11, 12, 13). Recent research has shown an improvement in weight loss, exercise/physical activity levels, and even eating behaviors of patients (14). Given these benefits, many women choose to undergo reduction mammoplasty. According to the American Society of Plastic Surgeons, 129,937 breast reductions were performed in 2017. This was done with a number of techniques, involving various pedicles, and skin resection designs.

Studies have shown that the inferior pedicle is the technique preferred by most American plastic surgeons (69%) because it provides vascular reliability (15). However, the superomedial pedicle (SMP) technique is a reliable vascular pedicle method and an important alternative approach for reduction mammoplasty. Studies have also shown that SMP reduction mammoplasty technique is a safe and effective reduction method in cases of mild and moderate hypertrophy.

The superior pedicle technique was first described by Arie in 1957, who found it unreliable because nipple viability is compromised for long pedicle reconstructions (16). This technique was further refined by the inclusion of the medial parenchyma in 1975 by Orlando and Guthrie. They included a medical pedicle that would better provide nipple-areola complex (NAC) vascularity (17). Subsequent studies using this approach have demonstrated its safety in larger breast reductions, and its complication rate was equivalent to that of the inferior pedicle technique. Comparative studies have also demonstrated reduced operative time, better cosmetic durability (less sagging or pseudoptosis over time), and fuller superior and medial appearance (beautiful décolleté) with the SMP technique (18, 19).

In this study, we aimed to present the long-term results of our patients who underwent breast reduction and investigate whether there was an increase in the number of complications in patients undergoing reduction mammoplasty based on the technique used (i.e., pedicle type, skin incision pattern), existence of concomitant diseases, and presence of other risk factors.

Materials and Methods

A total of 186 reduction mammoplasties performed between 2013 and 2018, which were carried out by the same surgical team in a single institution for a 6-year period, were included in this retrospective study. Patient demographic characteristics, preoperative breast measurements, and perioperative data were analyzed. A literature review regarding the complication rates of breast reduction surgery was also performed.

Of the 186 patients with symptomatic breast enlargement, 170 had undergone bilateral and 16 had unilateral reduction mammoplasties. Patients were assessed visually and by the measurement of nipple midclavicular point before surgery, and the procedures were performed by the same team. The superomedial, superior, and inferior pedicles were used in 99, 55, and 32 patients, respectively. The median patient age was 45 (range: 16–75) years. Data were analyzed retrospectively over a 6-year period. The study population was composed of all women aged 16–75 years who had undergone bilateral and unilateral reduction mammoplasty for symptomatic macromastia. The average follow-up duration of the patients was 4 years (range: 2–7 years).

Surgical technique

Markings were made while the patient was standing. The midsternal point, inframammary fold, and meridians of the breasts were marked as a line extending from the nipple to the midclavicular point. A line tangent to the most inferior point of the fold is drawn. The projection of the line was carried to the front of the breast, and the new nipple position was marked on the front of the breast at the level of the inframammary fold. For patients planned to have an inverted t scar pattern, a Wise pattern was drawn with arms of 5–6 cm in length. These lines are further extended medially and laterally until they intersect with the inframammary fold. For patients planned to have a vertical scar, a keyhole pattern is drawn to accommodate the vertical scar.

The pedicle was designed to have an average width of 8–10 cm at the base. The skin over the pedicle except the nipple and areola was de-epithelialized. A dermoglandular excision was performed, and the NAC was transposed into its new location. A thin breast tissue on the muscular structures was preserved in favor of the sensory innervation of the NAC. Medial and lateral pillar sutures were placed, and layered closure of skin incisions was performed. Drains were placed at the end of the surgery.

The three reduction techniques used in breast reduction have not been approached with any bias, and we have successfully applied all of them. Following the measurement of the distance between the sternal notch (Sn) and the NAC (Sn-NAC), we also considered patient’s age, height, and comorbidities to decide on the pedicle type. An Sn-NAC distance of >38 cm was usually considered for the inferior pedicle rather than for the SMP. We were inclined to prefer the inferior pedicle and SMP in certain age group (such as >60 years old) instead of the superior pedicle. Although there were no sharp boundaries, we usually chose those who are over 1.65 m in height to be taller than the average population and preferred superomedial and superior pedicle in this group. Comorbidities such as diabetes, smoking, wound healing problems, and other systemic diseases were considered for the pedicle selection.

The SMP technique was the most preferred method because of its versatility and speed, both with the inverted t and vertical scar pattern. In this technique, the most high-risk area of surgery is the circulation of the lateral skin flap. This flap was not left too thin or traumatized during dissection. The technique was easy to teach and apply. This pedicle can be combined with the vertical scar technique. The dissection of the pedicle is almost the same with the vertical technique; the only difference is that at the end of the operation, the skin is made suitable for the breast and excess skin is removed by combining it with vertical technique or a short t scar (1).

Statistical analysis

Chi-square test and descriptive analysis were performed using the GraphPad Prism 7.0 software (GraphPad Software, Inc., La Jolla, CA, USA). Difference with a p-value of <0.05 was considered significant.

Results

The inverted t/Wise pattern incision was used in 171 patients, followed by the vertical pattern incision in 15 patients. The median age was 45 (range: 16–75) years, and the median Body Mass Index (BMI) was 29 (range: 22–41) kg/m². Eight patients had a history of breast cancer. Patient morbidities included high blood pressure (n = 21), diabetes (n = 11), psychiatric problems (n = 6), asthma (n = 3), tobacco use (n = 8), and drug use (n = 2) (Tables 1,2 Figures 1, 2, 3, 4).

SMP

The median total reduction weight, median right breast reduction weight, and median left breast reduction weight were 2,195 (range: 640–4,050) grams, 1,100 (range: 400–2,100) grams, and 1,090 (range: 400–2,000) grams, respectively. The median preoperative SN-nipple distance was 31 cm (25–40 cm) for the right breast and 31 cm (range: 22–38 cm) for the left breast. The median postoperative SN-nipple distance was 20 cm (range: 18–30 cm) for both breasts (Table 1).

Superior pedicle

The median total reduction weight, median right breast reduction weight, and median left breast reduction weight were 2,000 (range: 80-4,800) grams, 1,000 (range: 80–2,350) grams, and 1,000 (range: 200–2,450) grams, respectively. The median preoperative SN-nipple distance was 27 cm (range: 24–45 cm) for the right breast and 26 cm (range: 24–45 cm) for the left breast. The median postoperative SN-nipple distance was 20.5 cm (range: 18–23 cm) for both breasts (Table 1).

Inferior pedicle

The median total reduction weight, median right breast reduction weight, and median left breast reduction weight were 2,200 (range: 1,600–4,400) grams, 1,100 (range: 800–2,200) grams, and 1,100 (range: 800–2,200) grams, respectively. The median preoperative SN-nipple distance was 30 cm (range: 24–43 cm) for the right breast and 30 cm (range: 24–43 cm) for the left breast. The median postoperative SN-nipple distance was 20 cm (range: 18–22 cm) for both breasts (Table 1).

The overall complication rate was 6.9%. A free nipple graft was needed during surgery for hematoma in three patients, infection occurred in one patient, enlarged scar formation in one patient, wound healing problems in two patients, development of areolar partial necrosis in two patients, and areolar total necrosis in one patient. The complication rates in patients with and without concomitant diseases were 10.2% and 4.6%, respectively (Table 3). These results reveal 2.2 times increase in the risk of complication in patients with concomitant diseases. The overall complication rate was significantly higher in patients with smoking habit (25%, p = 0.04), accessory breast (50%, p = 0.01), progesterone use (50%, p = 0.01), cerebrovascular disease (100%, p = 0.00025), morbid obesity (BMI ≥40 kg/m²; 100%, p = 0.00025), and thalassemia (100%, p = 0.00025). The overall complication rate was higher in patients with diabetes mellitus (9%, p = 0.77), but this increase was not significant. In addition, no correlation was found between complications and high blood pressure, psychiatric conditions, asthma, hyperthyroidism, arrhythmia, gastritis, migraine, ileus, infertility, sleep apnea, ankylosing spondylitis, cyst hydatic, coronary artery disease, multiple sclerosis, scoliosis, and post bariatric surgery (p>0.05) (Table 2, Figure 5). The median total reduction amount in 13 patients with postoperative complications was 2,600 (range: 462–4,800) grams; compared with the total reduction amount in patients without any complications, the difference was not significant (p = 0.07). The median SN-nipple distance in 13 patients with postoperative complications was 35 cm (range: 24–45 cm); compared with the SN-nipple distance in patients without any complications, the difference was not significant (p = 0.06). The complication rates were 6.06%, 7.2%, and 9.3% for the superomedial, superior, and inferior pedicles, respectively, and the difference was not significant (p>0.05). The risk for partial areolar necrosis was significantly increased in patients with superior pedicled breast reduction (p = 0.02) compared with other pedicle techniques. The risk for nipple contraction/nipple sensory loss was significantly increased in patients with inferior pedicled breast reduction (p = 0.02) compared with other pedicle techniques. No other significant correlation was found between a specific complication and pedicle type.

Complications were properly treated in the clinic by hematoma evacuation, antibiotic therapy, scar revision, necrosis debridement, secondary suturing, and dressing. All patients were followed up for an average of 4 years in terms of wound separation, scar pigmentation, areola and fat necrosis, sensory quality, hypertrophic scar, and keloid. As a result, satisfactory results were achieved in terms of aesthetic appearance over a long-term period. None of the patients had complaints regarding the shape of the breasts. All patients were doing well at the 6^th postoperative month, and all of them had gained symptomatic relief after surgery.

Discussion and Conclusion

Prior to breast reduction, surgeons would have chosen a skin incision pattern and a pedicle technique appropriate for the patient’s needs. In our clinic, we use both vertical technique and inverted t skin pattern technique depending on the size of the breast, degree of sagging, and patient’s wishes. Even in cases where we chose the inverted t technique, we were able to shorten the horizontal scar component, owing to our increasing experience of the vertical technique. That is, when a short transverse scar is added to the vertical technique, or when the traverse scar component in the inverted t technique is shortened, the difference between the vertical and inverted t techniques becomes less obvious (1).

Most American plastic surgeons still use the inferior pedicle and inverted t scar pattern. This technique has many important advantages, as it is primarily reproducible, simple, and easy to teach. Skin incisions are largely compatible with glandular incisions in the breast parenchyma. In this way, after the preoperative drawings were made, all surgical progressive planning such as cutting of tissues and closing of the wound can be completed by following the line markings. This provides a great advantage in terms of predictability and reliability. In contrast, in vertical scar techniques, there is a marked discrepancy between skin incisions and glandular incisions under the skin. To obtain an acceptable result, the amount of tissue to be removed must be well adjusted and tissues must be reshaped during surgery. Finally, it may be necessary to adjust the excess skin remaining in the caudal part of the vertical incision when closing the skin (1).

Orlando and Guthrie were the first to describe and present the reliability of SMP techniques. As advantages, the SMP technique maintains the dermoglandular integrity of the NAC. The pedicle can be kept in full thickness and rotated without thinning. This reduces the risk of nipple necrosis, a frightening complication, not only due to the predominant perforator vessels of the internal thoracic artery, but also due to the microvascular connection of the dermal plexus. Other researchers argue that this helps improve the venous drainage of the NAC. Although not evaluated, the duration of surgery tends to be shorter with this technique because much less time is spent during surgery and breast shaping closure can be performed more easily and quickly than other techniques.

The complication rates in our study were lower than those in other published complication rates associated with SMP use (20). Four previous studies have compared the two techniques and provided individual complication rates (20, 21, 22, 23). In 17 cases selected from 1987 to 2019, complications related to the superomedial technique were discussed. The mean complication rate ranged from 16.9% to 43% (20). Twenty publications have discussed complications associated with the use of the inferior pedicle technique. The average complication rate ranged from 29.7% to 71% (20).

Our analysis shows that the adoption of less common techniques, such as superomedial reduction mammoplasties, is potentially safe as with the inferior pedicle technique, while providing additional benefits. Numerous studies have drawn attention to maintaining long superomedial fullness, lower tendency to pseudoptosis, and rapid surgery time in long-term breast shape studies (19, 20, 21, 24, 25, 26, 27, 28).

In previous studies, higher complication risks were found patients with high BMI, excessive tissue resection weight, and long SN-nipple distance (20, 22, 24, 29). In other studies, the complication rate related to the patient’s age and tobacco use did not increase (25, 30). Gulcelik et al. (31) reported no difference in the rate of complications in patients with and without breast cancer who underwent breast reduction surgery. They have also found that BMI was the only factor associated with the complication rate. In our study, the overall complication rate was significantly higher in patients with smoking habit, accessory breast, progesterone use, cerebrovascular disease, morbid obesity (BMI ≥40 kg/m²), and thalassemia. In addition, no correlation was found between complication rates and high blood pressure, excessive breast reduction weights, long SN-NAC distance, and presence of other concomitant diseases (32).

This study has some limitations. The overall complication rate was low, so results might be different in studies with higher number of patients and complications. Since this was a retrospective study, no specific evaluation of the aesthetic appearance was performed. A prospective randomized study could potentially produce more reliable and comparable results in this regard.

In conclusion, our analysis does not suggest that these three techniques have superiority to each other in terms of pedicle safety. Moreover, no significant correlation was found between the overall complication rate and other risk factors. In most cases, we preferred superomedial and superior pedicle reductions. However, some points need to be examined in more detail in future studies. It will be valuable to compare superomedial fullness and aesthetic breast shape obtained in the early period with that in the late period of using other reduction techniques. In addition, nipple sensitivity and lactation should be demonstrated with objective calculations instead of subjective and theoretical criteria.

Key Points

• Our analysis shows that the presence of concomitant diseases increases the risk for postoperative complications in patients who underwent reduction mammoplasty.

• Our findings do not suggest that any of the techniques are superior to each other in terms of pedicle safety and risk of overall complications.

• No correlation was found between complications and high blood pressure, excessive breast reduction weights, and long sternal notch-nipple-areola complex distance.

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Evaluation of Factors Related to Postoperative Complications in Patients Who Underwent Reduction Mammoplasty