An Ideal Female Breast Shape in Balance with the Body Proportions of Asians

Defining the Ideal Reduction Mammaplasty: A Crowdsourcing Study

BACKGROUND

Reduction mammaplasty relieves macromastia symptoms while improving breast aesthetics, although the ideal breast aesthetically has been shown to differ culturally in previous crowdsourcing studies. Better understanding these differences can aid in setting postoperative expectations.

OBJECTIVES

The aim of this study was to characterize the ideal reduction mammaplasty according to demographics such as gender, ethnicity, socioeconomic status, and education.

METHODS

A crowdsourcing platform was utilized to collect 10,169 deidentified responses. Users completed 1 of 3 surveys, either a preoperative, postoperative, or preoperative and postoperative paired survey. The preoperative and postoperative surveys addressed 10 breast measurements, including upper breast slope, projection proportion, nipple position, breast width, and breast fullness. The paired preoperative and postoperative survey assessed the nipple-areola complex (NAC), chest fit, symmetry improvement, and scarring.

RESULTS

Preoperative images were rated more aesthetic than postoperative images. This was consistent across all demographics evaluated. Females, African Americans, Asians, participants ages 55+, and participants with no high school degree or a graduate degree found the most improvement in breast symmetry (P = .001, P = .002, P = .027, P < .001, P = .01). Male and Hispanic participants were most likely to see no change in symmetry (P = .008, P = .04), and South Asian participants found breasts less symmetric postoperatively (P < .001). There were significant demographic differences in aesthetic ratings of the NAC, scarring, and breast fit.

CONCLUSIONS

Perceived breast aesthetics after reduction mammaplasty vary significantly across demographics, including gender, ethnicity, age, socioeconomic status, and educational achievement. Surgeons should consider demographics when planning each patient's reduction mammaplasty.

LEVEL OF EVIDENCE: 5

Aesthetically Ideal Breasts Created With Artificial Intelligence: Validating the Literature, Racial Differences, and Deep Fakes

Background

A female's breasts are integrally tied to her identity and sense of femininity. Despite extensive study of breast aesthetics, there is no discrete formula for the "ideal breast" to guide the aesthetic surgeon. Racial and cultural differences heavily influence preferences in breast morphology. Artificial intelligence (AI) is ubiquitous in modern culture and may aid in further understanding ideal breast aesthetics.

Objectives

This study analyzed AI-generated images of aesthetically ideal breasts, evaluated for morphologic differences based on race, and compared findings to the literature.

Methods

An openly accessible AI image-generator platform was used to generate images of aesthetically ideal Caucasian, African American, and Asian breasts in 3-quarter profile and frontal views using simple text prompts. Breast measurements were obtained and compared between each racial cohort and to that of previously described ideal breast parameters.

Results

Twenty-five images were analyzed per racial cohort, per pose (150 total). Caucasian breasts were observed to fit nicely into previously described ideal breast templates. However, upper-to-lower pole ratios, nipple angles, upper pole slope contours, nipple-areolar complex positions, and areolar size were observed to have statistically significant differences between racial cohorts.

Conclusions

Defining the aesthetically ideal breast remains a complex and multifaceted challenge, requiring consideration of racial and cultural differences. The AI-generated breasts in this study were found to have significant differences between racial groups, support several previously described breast ideals, and provide insight into current and future ethical issues related to AI in aesthetic surgery.

Level of Evidence 5

Definitions of Abnormal Breast Size and Asymmetry: A Cohort Study of 400 Women

BACKGROUND

Macromastia, micromastia and breast asymmetry have an impact on health and quality of life. However, there is scarce information addressing breast size and asymmetry frequency distribution in reference populations.

OBJECTIVE

The current study aims to identify factors that influence breast size and symmetry and classifies abnormal breast sizes and breast asymmetries in an adult German population.

METHODS

Breast base dimensions, breast volume, symmetry, and other breast anthropometric parameters of 400 German female patients were determined in a retrospective review of the MRI archives at our institution. Professional medical MRI-segmentation software was used for volume measurement.

RESULTS

A total of 400 Patients were retrospectively enrolled. The patients had a mean age of 50 ± 12 years (min: 24; max: 82), mean BMI of 25.0 ± 5.0 (min: 14.7, max: 45.6), and a mean total breast volume of 976 ml (right: 973 ml, min: 64, max: 4777; left: 979 ml, min: 55, max: 4670). The strongest correlation of breast volume was observed with BMI (r = 0.834, p < 0.001), followed by breast base width (r = 0.799, p < 0.001). Smaller breasts have higher breast volume asymmetry ratios (r = - 0.124, p < 0.014). For a BMI between 18.5 and 24.9 kg/m2, micromastia is defined by breast volumes below 250 ml (5th percentile) and macromastia by volumes above 1250 ml (95th percentile). Abnormal breast volume asymmetry (< 5th and > 95th percentile) is equivalent to an absolute difference of approximately 25% relative to the smallest side (bidirectional asymmetry ratio 5th percentile - 19%; 95th percentile 26%).

CONCLUSION

This study provides normative data of German women, as well as selected size-for-BMI percentiles and asymmetry ratio percentiles. The normative data may help to establish transparent and objective coverage criteria for health insurances.

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 .

Cosmetic Surgery and the Diversity of Cultural and Ethnic Perceptions of Facial, Breast, and Gluteal Aesthetics in Women: A Comprehensive Review

An increasing number of people are opting for cosmetic surgeries. For many years, the physical and aesthetic appearance of Caucasians has been considered to be ideal. However, it is now commonly acknowledged that attractiveness and aesthetic standards vary among cultural backgrounds and ethnic groups and that Western attractiveness criteria no longer apply to all. Herein, we conducted a comprehensive review of studies that examined cultural and ethnic variations in preferences for facial, breast, and gluteal aesthetics, as well as reviewed studies that investigated ethnic disparities in attitudes and motivations for cosmetic surgery. A total of 4532 references were identified, 66 of which met the inclusion criteria. Several studies have reported that facial golden ratios are invalid for representing perceived attractiveness standards among different ethnicities. The majority of studies also indicated that facial aesthetic interventions should not aim to Westernize but to optimize ethnic traits. Significant ethnic differences in preferences for upper- and lower-pole breast proportions have been reported. The size of the buttocks and waist-to-hip ratio were identified as the main factors of buttock aesthetics, with buttock size preferences having a high ethnic diversity. Interest in cosmetic surgical procedures while maintaining ethnic identity continues to grow among young women worldwide. This comprehensive review strongly suggests that accommodating cultural and ethnic differences in aesthetic standards in cosmetic surgery planning can lead to more acceptable cosmetic outcomes.

A Simple Preoperative Marking of Implant Augmentation Mammoplasty: The Semicircle Method

BACKGROUND

The location of the inframammary fold is the most critical step in the preoperative marking of implant augmentation mammoplasty. At present, most of the calculation formulas for new inframammary fold location determination are complicated.

OBJECTIVE

Based on the aesthetic standards of the breast, we proposed a simple and effective method, the Semicircle method, to determine the location of the new inframammary fold.

METHODS

In this prospective study, 21 patients were enrolled to record the distance from the nipple to the new inframammary fold calculated by the Semicircle method, Tebbetts method, Randquist method, Mallucci's ICE method and compare the Semicircle method to the other three methods by using the intraclass correlation coefficient.

RESULTS

According to the statistical results of the intraclass correlation coefficient, the Semicircle method had poor consistency with the Tebbetts and ICE methods, but good consistency with the Randquist method.

CONCLUSION

The Semicircle method is a simple and aesthetically acceptable design method for breast augmentation mammoplasty, which can quickly and efficiently determine the position of the new inframammary fold. At the same time, this method has good consistency with the Randquist method and can obtain satisfactory breast morphology.

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 .

Beyond the 21-cm Notch-to-nipple Myth: Golden Proportions in Breast Aesthetics

Background

The 21-cm notch-to-nipple distance has been accepted without academic scrutiny as a key measure in breast aesthetics. The Fibonacci sequence and phi ratio occur frequently in nature. They have previously been used to assess aesthetics of the face, but not the breast. This study aims to assess if the static 21-cm measure or the proportional phi ratio is associated with ideal breast aesthetics.

Method

Subclavicular-breast height and breast width were used to calculate the aesthetic ratio. Subjects were subsequently aesthetically rated. A one-sample t-test was used to determine if the ratio for each breast differed from phi. Breast scores with one, both, or no breasts were compared with an optimal phi ratio. Analysis of variance was performed. Tukey-Kramer adjustment for multiple comparisons was used when pairwise comparisons were conducted.

Results

Five subjects (14%) had bilateral optimal phi ratio breasts. Four subjects (11%) had one breast with an optimal phi ratio. Subjects with bilateral optimal phi ratios had significantly higher overall breast scores than those with only one optimal breast (Δ = 0.86, P = 0.025) or no optimal breast (Δ = 0.73, P = 0.008). Distance from optimal Fibonacci nipple position was moderately to strongly correlated with aesthetic score (-0.630, P = 0.016). No correlation was found between 21-cm notch-to-nipple distance and aesthetic score.

Conclusion

The bilateral optimal phi ratio is correlated with high overall aesthetic scores, as is the optimal Fibonacci nipple position. No correlation was found between 21-cm notch-to-nipple distance and overall aesthetic score.

Bigger Bust No Longer on Trend: Malaysians Prefer Moderation in Ideal Female Breast Augmentation

Background It is important to correctly determine the ideal female breast anatomy and aesthetic proportions in order to prepare for surgery and establish its goals. Leaving the preference to the operating surgeons alone might leave unsatisfactory results, which especially leads to reoperation, quite often in the aspect of breast dimension.

Methods This study was conducted using an online graphic questionnaire. We attempted to seek male and female perspectives toward their preferred ideal female breast size for breast augmentation, in order to provide up-to-date data to assist breast surgeons in attaining satisfactory surgical results.

Results Sixty males and 67 females participated in the study comprising Asian major ethnicities of Malay, Chinese, and Indian. Universally, 46.6% of men and 53.5% of women preferred 30 mm diameter for the most ideal nipple-areola complex (NAC) size. For the perfect bust, they generally favored size C and D cup (37.8% and 38.5%, respectively).

Conclusion The majority of women seek natural breast beauty and the longing for an oversized look appears to have infiltrated practice but these assumptions have finally been challenged by these findings.