Outcomes of Reduction Mammaplasty in Adolescents vs Average-Age Patients: A 3-Year Single-Center Retrospective Analysis

Background: The onset of macromastia symptomatology occurs most often at puberty, yet most females undergo breast reduction surgery during the fifth decade of life. Adolescent patients with macromastia may benefit from reduction mammaplasty, yet outcome data are limited to a small number of institutions. Methods: We conducted a retrospective medical records review of all patients who underwent reduction mammaplasty at our institution during the years 2016 to 2019. Patients were divided into 2 cohorts based on age: adolescent (10 to 24 years) and average age (≥44 years). Demographics and outcome measures were collected from follow-up evaluations at 1-week, 1-month, 3-month, 6-month, and 12-month intervals postoperatively. Results: A total of 141 patients met the inclusion criteria for the study. Mean age at surgery was 19 ± 3.2 years in the adolescent group and 53 ± 7.4 years in the average-age group. No significant differences in complications related to wound healing (42.9% vs 50.0%, P=0.418) or total postoperative complications (18.4% vs 19.6%, P=0.863) were found between adolescent and average-age patients, respectively. Conclusion: Complications related to wound healing are common in reduction mammaplasty, although rates of life-threatening complications are rare. In this 3-year review comparing the outcomes of adolescent vs average-age patients who underwent reduction mammaplasty at the same institution, no significant differences in postoperative complication rates were found. Our data suggest that adolescent patients with macromastia should not defer reduction mammaplasty out of concern for higher complication rates because of age alone.


INTRODUCTION
Reduction mammaplasty has been shown to improve dermatologic, musculoskeletal, and psychosocial symptoms of macromastia and may lead to an overall increase in quality of life. 1,2Although the precise etiology of macromastia is not entirely understood, most females report the onset of symptoms during initial breast development at puberty. 3,4n efforts to reduce the burden of excessive breast tissue, patients frequently attempt provider-recommended physical therapy and scheduled exercise, yet the outcomes data on nonoperative management of macromastia have been *Dr Hajebian is now affiliated with the Department of Surgery, Garnet Health Medical Center, Middletown, NY. disappointing. 5,6While the reasoning is unclear, the majority of females do not undergo reduction mammaplasty until the fifth decade of life. 7eduction mammaplasty is not considered a high-risk procedure, but complication rates have been reported as high as 50% to 53.9% in adult patients. 8,98][9] However, for adolescent patients, defined in 2018 as between 10 years and 24 years of age, 10 data on complications are lacking, with data predominantly limited to works from one institution. 2,11,12Furthermore, studies with robust sample sizes comparing complication rates between adolescents and average-age patients (those ࣙ44 years) within the same institution are deficient in the literature.As such, the recommendation for early breast reduction in young women and girls remains controversial.
In this study, we compared the outcomes between adolescent patients and average-age patients who underwent reduction mammaplasty at a single institution.

METHODS
After obtaining institutional review board approval (2021.128),we retrospectively reviewed our institution's database of female patients aged 10 to 24 years and 44 to 77 years who underwent bilateral reduction mammaplasty for macromastia from 2016 through 2019.Only patients who met the criteria for surgically necessary, noncosmetic breast reduction surgery for the treatment of macromastia (using an inferior pedicle technique for breast reduction and Wise pattern nipple-preserving technique) were included in the study (Figure 1). 13Patients who were active smokers and patients with a history of breast malignancy (including incidental malignancy found on reduction mammaplasty pathology specimens), previous breast surgery or biopsy, or diabetes mellitus types 1 or 2 were excluded from the study.Data extraction was from standardized providerentered consultation, perioperative, and follow-up clinic notes, containing patient symptomatology, clinical findings, photographs, and physical examination characteristics.All patients were evaluated in clinic during postoperative visits at the following intervals: 1 week, 1 month, 3 months, 6 months, and 12 months.The postoperative complications included for analysis in our sample are listed and defined in Figure 2. 14

Data Storage and Management
All patient data were collected from the Epic (Epic Systems Corporation) electronic medical record system.Deidentified patient data including demographic information, diagnosis of macromastia, complications related to wound healing, and postoperative complications were collected and stored in a secure computer database.

Statistical Analysis
Patient demographic characteristics are summarized using descriptive statistics (mean ± standard deviation for continuous variables and frequencies and percentages for categorical variables).Significance was calculated using Fisher exact test/Pearson chi-squared test or t test measured with 2 tails, and P value significance was defined as ࣘ0.05.

Patient Demographic Information
Between 2016 and 2019, 308 patients underwent reduction mammaplasty at our institution.Of those, 141 patients met our inclusion criteria: 49 patients in the adolescent group and 92 patients in the average-age group (Table 1).Ages of the patients in the adolescent group ranged from 13 to 24 years, with a mean age of 19 ± 3.2 years at the time of surgery.Ages of the patients in the average-age group ranged from 44 to 77 years, with a mean age of 53 ± 7.4 years at surgery.Both groups were composed principally of African American patients: 55.1% in the adolescent group and 67.4% in the average-age group.Patients in the adolescent group had a significantly higher mean preoperative body mass index compared to the average-age patients: 31.1 ± 4.2 kg/m 2 vs 29.4 ± 5.1 kg/m 2 (P=0.047).

Complications Occurring During the Immediate Postoperative Period
No patients in either group experienced severe immediate complications occurring during the same hospital stay, such as death, deep vein thrombosis, or pulmonary embolism.One patient in the adolescent group (2.0%) and 2 patients in the average-age group (2.2%) required same-day operative take-back because of the presence of an expanding hematoma (Table 2).None of those patients required hospital admission for inpatient monitoring, and all 3 patients were cleared for same-day discharge.No statistically significant difference in same-day operative take-back was found between the adolescent and average-age patients (P=1).

Early Complications Present From the Immediate Postoperative Period to the 1-Month Follow-Up
Early minor complications related to wound healing occurred in both groups, but no significant differences were seen between adolescent and average-age patients for any complications occurring from the immediate postoperative period to the 1-month follow-up (Table 2).
Wound dehiscence at the T junction occurred in 4.1% of the adolescent group vs 8.7% of the average-age group, and hematoma/seroma occurred in 6.1% of the adolescent group vs 5.4% of the average-age group.Early surgical site infection occurred in 1 patient in the averageage group and was successfully treated with oral antibiotic therapy.
Of the 2 adolescent patients with wound dehiscence at the T junction site, 1 patient (50%) failed to achieve wound closure by the 1-month follow-up and required debridement in clinic with excision of skin necrosis; the other patient was managed with dressing changes and careful at-home monitoring.Of the 8 patients in the average-age group with an open T junction, 3 (3.3%)required debridement in clinic, and 2 (2.2%) required repair of the T junction site in the operating room, 1 of whom required excision of skin necrosis.
No nipple necrosis was seen in the adolescent group vs in 3 patients (3.3%) in the average-age group who developed nipple necrosis by the 1-month follow-up; all 3 patients required operative excision of necrosis.Of the 3 patients in the adolescent group who developed a hematoma/seroma persisting to the 1-month follow-up visit, 1 patient underwent successful aspiration in the clinic, and another patient underwent successful evacuation in the operating room.Of the 5 average-age patients with hematoma formation persisting to the 1-month follow-up visit, 1 patient underwent successful drainage in the clinic, and 2 patients had successful evacuations in the operating room.

Late Complications Present at the 12-Month Follow-Up
Late postoperative complications present at the 12month follow-up visit in both groups were persisting nipple  hypersensitivity, persisting hypertrophic scarring/keloids, and breast asymmetry (Table 4).No significant differences occurred in long-term complications between the adolescent and average-age groups.

Total Complications Related to Wound Healing
Total complications related to wound healing are listed in Table 5. Complications related to wound healing occurred in 42.9% of adolescent patients vs 50.0% of average-age patients (P=0.418).

Total Postoperative Complications
Total postoperative complications excluding those related to wound healing (refer to Figure 2), are listed in Table 6.Postoperative complications occurred in 18.4% of adolescent patients vs 19.6% of average-age patients (P=0.863).

DISCUSSION
Reduction mammaplasty is an established method for treating the negative symptoms of macromastia. 1,2,5,6However, in young and adolescent females, the decision to operate is often influenced by factors such as complication risk and the effects on breastfeeding and regrowth of breast tissue. 11,15,16Our study only examined complications in patients after undergoing reduction mammaplasty; to our knowledge, this study is the first to directly compare the outcomes of adolescent vs average-age patients at the same institution.

Complication Rates
In our study population, minor complications were common in both age groups and mirror reports in the literature. 7,8,11,12To date, no standard definitions for complication classifications exist for reduction mammaplasty which results in a wide range of reported rates.For example, in the retrospective study by Winter et al, 17 postoperative complications were defined as "any deviation from the normal postoperative course," according to the Clavien-Dindo Grade I surgical complication criteria. 18,19onsequently, wound healing problems such as dehiscence, changes in sensation, and hypertrophic scarring were included in the calculation, resulting in an overall complication rate of 63%. 17Meanwhile, in their multicenter analysis, Gust et al only included major complications, thus reporting an overall complication rate of 4%. 20The systematic review by Fairchild et al included major complications

Optimal Timing and Breast Regrowth
In adolescent females, the optimal age for reduction mammaplasty remains unclear.Alleviating somatic and psychosocial symptoms should be weighed against the possibility of postoperative breast growth in young females. 15,16uzzi et al reported regrowth occurring in 6.1% of adolescents; approximately half was attributable to glandular growth and the other half to weight gain. 15While the role of postoperative weight gain and breast regrowth is not completely understood, the amount of initial breast tissue removed is strongly correlated to patient body mass index at surgery. 8,12In terms of female development, stabilization of breast growth is generally considered to occur 2 to 3 years after menarche; however, Nuzzi et al described obese patients reporting continued growth for an average of 9 years postmenarche. 15Xue et al showed that patients with a 1-year history of breast growth stabilization did not demonstrate any significant regrowth and recommended timing of surgery based on this principle, rather than waiting until adulthood. 16Although growing evidence suggests that progesterone-based contraception can cause glandular enlargement of breast tissue, a theorized cause of macromastia, 22 Nuzzi et al reported that use of progestinonly contraception following reduction mammaplasty was not associated with breast regrowth. 23rzozowski et al showed that the hormonal-driven breast enlargement via engorgement of ductal-lobular units remained intact in patients who become pregnant after reduction mammaplasty. 24However, no long-term studies have provided quantifiable data on the incidence rates of patients whose breast volumes return to post-reduction mammaplasty volumes after undergoing regrowth during breastfeeding.

Effect on Breastfeeding
The data on breastfeeding success after reduction mammaplasty appear to be reassuring.In the Kraut et al systematic review of 51 studies, no significant impairment of breastfeeding ability was found in females who underwent breast reduction with preservation of the subareolar parenchyma (eg, superior, medial, or inferior pedicle/vertical reduction mammaplasty) or techniques that do not result in complete transection of the lactiferous ducts or lobular units. 25[27][28][29][30]

Limitations
The results of our study are subject to the statistical limitations of a retrospective review with a moderate sample size of 141 patients, thus creating the possibility for bias.

CONCLUSION
Minor complications are common in reduction mammaplasty, although rates of life-threatening complications are rare.In this 3-year review comparing the outcomes of adolescent vs average-age patients who underwent reduction mammaplasty at the same institution, we found no significant differences in rates of postoperative complications.Our data suggest that adolescent patients with macromastia should not defer reduction mammaplasty out of concern for higher complication rates attributable to age alone.

Figure 1 .
Figure 1.American Society of Plastic Surgeons criteria for surgically necessary treatment of macromastia.13

Figure 2 .
Figure 2. American Society of Plastic Surgeons list and definitions of postoperative complications.14

Table 1 . Patient Demographic Information, n=141 Variable Adolescent Group, n=49 Average-Age Group, n=92 P Value
Notes: Data are presented as n (%) unless otherwise indicated.Patients in the adolescent group were ages 13 to 24 years, and patients in the averageage group were 44 to 77 years.P values were calculated using t test or Fisher exact test/Pearson chi-squared test.Significant values are in bold text.

Table 2 . Early Complications Present From the Immediate Postoperative Period to the 1-Month Follow-Up Complication Adolescent Group, n=49 Average-Age Group, n=92 P Value
Notes: Data are presented as n (%).Patients in the adolescent group were ages 13 to 24 years, and patients in the average-age group were 44 to 77 years.P values were calculated using Fisher exact test/Pearson chi-squared test.

Table 3 . Midterm Complications Present at the 3-Month to the 6-Month Follow-Up
Notes: Data are presented as n (%).Patients in the adolescent group were ages 13 to 24 years, and patients in the average-age group were 44 to 77 years.P values were calculated using Fisher exact test/Pearson chi-squared test.

Table 4 . Late Complications Present at the 12-Month Follow-Up Complication Adolescent Group, n=49 Average-Age Group, n=92 P Value
Notes: Data are presented as n (%).Patients in the adolescent group were ages 13 to 24 years, and patients in the average-age group were 44 to 77 years.P values were calculated using Fisher exact test/Pearson chi-squared test.

Table 5 . Total Complications Related to Wound Healing
Notes: Data are presented as n (%).Patients in the adolescent group were ages 13 to 24 years, and patients in the average-age group were 44 to 77 years.P values were calculated using Fisher exact test/Pearson chi-squared test.

Table 6 . Total Postoperative Complications
Notes: Data are presented as n (%).Patients in the adolescent group were ages 13 to 24 years, and patients in the average-age group were 44 to 77 years.P values were calculated using Fisher exact test/Pearson chi-squared test.