Breast sensorisexual function: a novel patient-reported outcome measure of sexual sensory functions of the breast.

BACKGROUND: A validated measure assessing sexual sensory functions of the breast is needed to optimize sexual and other health outcomes after breast procedures. AIM: To describe the development of a patient-reported outcome measure (PROM) to assess breast sensorisexual function (BSF). METHODS: We applied the PROMIS standards (Patient Reported Outcomes Measurement Information System) for measure development and evaluation of validity. An initial conceptual model of BSF was developed with patients and experts. A literature review yielded a pool of 117 candidate items that underwent cognitive testing and iteration. Forty-eight items were administered to an ethnically diverse, national panel-based sample of sexually active women with breast cancer (n = 350) or without (n = 300). Psychometric analyses were performed. OUTCOMES: The main outcome was BSF, a measure that assesses affective (satisfaction, pleasure, importance, pain, discomfort) and functional (touch, pressure, thermoreception, nipple erection) sensorisexual domains. RESULTS: A bifactor model fit to 6 domains-excluding 2 domains with only 2 items each and 2 pain-related domains-revealed a single general factor representing BSF that may be adequately measured by the average of the items. This factor, with higher values denoting better function and with the standard deviation set to 1, was highest among women without breast cancer (mean, 0.24), intermediate among women with breast cancer but not bilateral mastectomy and reconstruction (-0.01), and lowest among those with bilateral mastectomy and reconstruction (-0.56). Between women with and without breast cancer, the BSF general factor accounted for 40%, 49%, and 100% of the difference in arousal, ability to orgasm, and sexual satisfaction, respectively. Items in each of 8 domains demonstrated unidimensionality (ie, they measured 1 underlying BSF trait) and high Cronbach's alphas for the entire sample (0.77-0.93) and the cancer group (0.71-0.95). Correlations with sexual function, health, and quality of life were positive for the BSF general factor and mostly negative for the pain domains. CLINICAL IMPLICATIONS: The BSF PROM can be used to assess the impact of breast surgery or other procedures on the sexual sensory functions of the breast in women with and without breast cancer. STRENGTHS AND LIMITATIONS: The BSF PROM was developed by using evidence-based standards, and it applies to sexually active women with and without breast cancer. Generalizability to sexually inactive women and other women warrants further study. CONCLUSION: The BSF PROM is a measure of women's breast sensorisexual function with evidence of validity among women affected and unaffected by breast cancer.

Somatotopic mapping of the human breast using 7 T functional MRI.

How are tactile sensations in the breast represented in the female and male brain? Using ultra high-field 7 T MRI in ten females and ten males, we demonstrate that the representation of tactile breast information shows a somatotopic organization, with cortical magnification of the nipple. Furthermore, we show that the core representation of the breast is organized according to the specific nerve architecture that underlies breast sensation, where the medial and lateral sides of one breast are asymmetrically represented in bilateral primary somatosensory cortex. Finally, gradual selectivity signatures allude to a somatotopic organization of the breast area with overlapping, but distinctive, cortical representations of breast segments. Our univariate and multivariate analyses consistently showed similar somatosensory breast representations in males and females. The findings can guide future research on neuroplastic reorganization of the breast area, across reproductive life stages, and after breast surgery.

Sensory restoration of breast reconstruction - The search for the ideal approach continues.

Contemporary reconstructive modalities focus on breast anatomy and attempt to reconstruct breasts that are soft, of adequate shape, size, and symmetry. However, a functional component, i.e. sensation, has largely been ignored. Flap neurotization addresses this shortcoming. While we are still in search of the ideal surgical technique to achieve this goal, a novel approach that limits nerve harvest to the sensory branch only, thus, minimizing abdominal donor-site morbidity, is presented.

The assessment of sensory detection thresholds on the perineum and breast compared with control body sites.

INTRODUCTION: Few studies explored multiple sensory detection thresholds on the perineum and breast, but these normative data may provide standards for clinical conditions such as aging, genital and breast surgeries, pathological conditions affecting the genitals, and sexual function. AIMS: The aim of this study was to provide normative data on sensory detection thresholds of three sensory modalities on the perineum and breast. METHODS: Thirty healthy women aged between 18 and 35 years were assessed on the perineum (clitoris, labia minora, vaginal, and anal margin), breast (lateral, areola, nipple), and control body locations (neck, forearm, abdomen) for three sensory modalities (light touch, pressure, vibration). MAIN OUTCOME MEASURES: Average detection thresholds for each body location and sensory modality and statistical comparisons between the primary genital, secondary sexual, and neutral zones were the main outcome measures. RESULTS: Average detection thresholds for light touch suggest that the neck, forearm, and vaginal margin are most sensitive, and areola least sensitive. No statistical difference is found between the primary and secondary sexual zones, but the secondary sexual zone is significantly more sensitive than the neutral zone. Average detection thresholds for pressure suggest that the clitoris and nipple are most sensitive, and the lateral breast and abdomen least sensitive. No statistical difference is found between the primary and secondary sexual zone, but they are both significantly more sensitive than the neutral zone. Average detection thresholds for vibration suggest that the clitoris and nipple are most sensitive. The secondary sexual zone is significantly more sensitive than the primary and neutral zone, but the latter two show no difference. CONCLUSION: The current normative data from sensory detection threshold are discussed in terms of providing standard values for research and clinical conditions. Additional analysis from breast volume, body mass index, hormonal contraception, menstrual cycle, and sexual orientation do not seem to influence the results. Sexual abstinence and body piercing may have some impact.

Prevalence of phantom breast pain and sensation among postmastectomy patients suffering from breast cancer: a prospective study.

BACKGROUND: With the advent of newer treatment modalities, survival rate among breast cancer patients has improved substantially over the last few years. Hence, the concern has also shifted to the impact of treatment, side effects, and the morbidities arising from disease management. Among them is the development of phantom breast pain (PBP) and sensation (PBS) after mastectomy. METHODS: After obtaining ethical committee approval, 80 patients suffering from carcinoma breast undergoing modified radical mastectomy were enrolled into the study. They were assessed preoperatively for presence of breast pain, disease, and surgical concerns and followed up postoperatively at 6 weeks, 6 and 12 months, respectively, for development of PBP and PBS, and other associated effects. RESULTS: The prevalence of PBP and PBS was 5.4%, 9.5% at 6 weeks, 8.2%, 6.8% at 6 months, and 13.6% and 17% at 12 months, respectively. There was high prevalence of depression, sleep disturbance, and anxiolytic intake among the patients with PBP and PBS (P value < 0.05). CONCLUSION: The prevalence of PBP and PBS was very low and of minor clinical significance. There was higher prevalence of depression, sleep disturbances, and anxiolytic intake among the patients with PBP and PBS, but it did not result in any significant impact on the patients daily activities.

Flap neurotisation improves sensation outcomes in abdominally based autologous breast reconstruction: A systematic review and meta-analysis.

BACKGROUND: Flap neurotisation is a promising solution to restore the diminished or complete loss of sensation following mastectomy. This systematic review compared sensory outcomes in neurotised versus non-neurotised abdominal-based autologous breast reconstructions to establish its benefit in routine clinical practice. METHODS: A literature search was performed according to the PRISMA guidelines. Medline, PubMed, EMBASE, and Cochrane databases were queried for relevant studies. Pressure sensitivity, measured using Semmes-Weinstein monofilaments (SWM) or the pressure-specified sensory device (PSSD), was the primary outcome measure. RESULTS: A total of 12 studies comprising 367 neurotised and 295 non-neurotised flap reconstructions were included, with 8 studies included in the meta-analysis. Neurotised flaps demonstrated superior sensory outcomes over non-neurotised flaps, with significant differences in SWM scores (mean difference [MD], -1.552 95% CI, -2.351 to -0.7535; p = 0.0001) and PSSD (MD -13.36; 95% CI, -26.41 to -0.3117; p = 0.0448) at follow-up (range 8 to 77 months). The differences in total skin sensation (native and flap skin combined) were statistically significant in the SWM group (p = 0.0010) but not in the PSSD group (p = 0.0649). Investigation on the factors impacting sensation recovery in neurotised flaps yielded inconclusive outcomes. CONCLUSIONS: Neurotised flaps consistently demonstrated superior sensation outcomes compared with non-neurotised flaps, irrespective of flap type or neurotisation technique. However, further research is essential to elucidate the factors that impact sensory recovery and standardise neurotisation practices for more optimal post-mastectomy reconstruction outcomes.

Sensate immediate breast reconstruction.

As breast cancer therapies and associated oncologic outcomes continue to improve, greater attention has been placed on quality-of-life issues after breast cancer and breast cancer risk-reducing treatments. The loss of sensation that typically occurs after mastectomy can have significant negative psychological, sexual, and functional impact on patients after surgery. Further, injury of nerves not only leads to numbness, but can also cause chronic neuropathic pain, which can be very debilitating to affected patients. In order to minimize these impacts, there is expanding uptake of surgical approaches that preserve nerves at the time of mastectomy and reconstruct injured nerves either during mastectomy or during delayed reconstruction. These advances have been facilitated by anatomic studies investigating different variants of intercostal anatomy and better understanding the course of the nerves innervating the mastectomy skin and nipple-areolar complex (NAC). With improved knowledge of the intercostal nerve anatomy, surgeons are able to carefully preserve nerves at the time of mastectomy, thus improving sensory outcomes. Additionally, nerve reconstruction techniques have advanced, particularly with newer nerve allograft technologies, which allows for nerve reconstruction to be done both at the time of mastectomy, as well as in a delayed fashion. The focus of this article is to describe the current state of sensory preservation and immediate reinnervation at the time of mastectomy and the advances that have allowed for these new approaches.

The influence of a previous implant-based breast reconstruction on postoperative sensation of the deep inferior epigastric artery perforator flap.

BACKGROUND: Implants and DIEP flaps have different outcomes regarding postoperative breast sensation. When compared to the preoperative healthy breast, implant-based breast reconstruction (IBBR) negatively influences postoperative breast sensation. However, it is currently unknown whether a prior IBBR also influences postoperative sensation of a replacing DIEP flap. The goal of this cohort study is to evaluate the influence of an IBBR on the postoperative sensation of a replacing DIEP flap. METHODS: Women were included if they received a DIEP flap reconstruction after mastectomy, with or without prior tissue expander (TE) and/or definitive breast implant. Sensation was measured at four intervals in 9 areas of the breast with Semmes-Weinstein monofilaments: T0 (preoperative, implant/no reconstruction), T1 (2-7 months postoperative, DIEP), T2 (± 12 months postoperative, DIEP), Tmax (maximum follow-up, DIEP). Linear mixed-effects models were used to investigate the relationship between an implant/TE prior to the DIEP flap and recovery of breast sensation. RESULTS: 142 women comprising 206 breasts were included. 48 (23.3%) breasts did, and 158 (76.7%) breasts did not have a TE/IBBR prior to their DIEP. No statistically significant or clinically relevant relationships were found between a prior implant/TE and recovery of DIEP flap breast sensation for the flap skin, native skin, or total breast skin at T1, T2, or Tmax. There were also no relationships found after adjustment for the confounders radiation therapy, BMI, diabetes, age, flap weight, follow-up, and nerve coaptation. CONCLUSIONS: An implant/TE prior to a DIEP flap does not influence the recovery of postoperative breast sensation of the DIEP flap.

Modern Approaches to Breast Neurotization.

Absent or diminished breast sensation is a persistent problem for many postmastectomy patients. Breast neurotization is an opportunity to improve sensory outcomes, which are poor and unpredictable if left to chance. Several techniques for autologous and implant reconstruction have been described with successful clinical and patient-reported outcomes. Neurotization is a safe procedure with minimal risk for morbidity and it presents a fantastic avenue for future research.

Importance of Breast Sensation After Mastectomy: Evidence from Three Sources.

Background: Every year, more than 90,000 U.S. women undergo mastectomy. More than 40% have reconstruction. Following reconstruction, most women experience persistent partial or complete numbness of the reconstructed breasts, and many experience pain. Yet, breast reconstruction procedures focus largely on esthetic outcomes with mixed impact on sensory outcomes and little attention to pain. This study examines whether and how breast sensation is important to women. Materials and Methods: Conventional content analysis of extant qualitative data from a clinical registry (29 women with prior breast surgery for cancer, 2008-2022), a volunteer community sample (qualitative interviews with 6 women with and 5 without breast cancer, 2019), and from a Twitter social media survey (N = 32, 2022). Results: Functions of the breast identified by women with and without cancer include breastfeeding, sexual function, and femininity. Five interrelated themes on the importance of breast sensation emerged among women with breast cancer history: sexual function, experience of partnered sex or relationship with one's sexual partner, breast embodiment, effect of breast pain on sexual function, and importance to psychological wellbeing. Women, advocates, and clinicians described a lack of patient-physician communication in this domain that exacerbates the negative impact of breast sensation loss on health and wellbeing. Conclusions: Breast sensation is important to women following mastectomy, yet a gap exists in patient-physician communication about the impact of mastectomy and reconstruction on breast sensory function. Lessons for physicians, scientists, and skeptics are conveyed about why the basic integrity of women's bodies matters for practice and science.

Re-examining content validity of the BREAST-Q more than a decade later to determine relevance and comprehensiveness.

PURPOSE: The BREAST-Q is the most used patient-reported outcome measure (PROM) in breast cancer surgery. The purposes of this study were to re-examine the content validity of BREAST-Q cancer modules (mastectomy, lumpectomy and reconstruction) and to determine the need for new scales. METHODS: Interviews were conducted with women with breast cancer (Stage 0-4, any treatment), and were audio-recorded and transcribed verbatim. Deductive (based on original BREAST-Q conceptual framework) and inductive (new codes from the data) content analysis approaches were used to analyze the data. The number of codes that mapped to BREAST-Q were recorded. RESULTS: Dataset included 3948 codes from 58 participants. Most of the breast (n = 659, 96%) and all psychosocial (n = 127, 100%), sexual (n = 179, 100%) and radiation-related (n = 79, 100%) codes mapped to BREAST-Q Satisfaction with Breast, Psychosocial Wellbeing, Sexual Wellbeing and Adverse Effects of Radiation scales, respectively. For the physical wellbeing codes (n = 939) for breast/chest and arm, 34% (n = 321) mapped to the Physical Wellbeing-Chest scale. Most of the abdomen codes (n = 311) mapped to Satisfaction with Abdomen (n = 90, 76%) and Physical Wellbeing-Abdomen (n = 171, 89%) scales. Codes that did not map (n = 697, 30%) covered breast sensation and lymphedema. Concerns related to fatigue, cancer worry, and work impact were most reported and did not map to BREAST-Q. CONCLUSION: The BREAST-Q, which was developed using extensive patient input more than a decade ago, is still relevant. To ensure the BREAST-Q remains comprehensive, new scales for upper extremity lymphedema, breast sensation, fatigue, cancer worry, and work impact were developed.

Neurotization in Innervated Breast Reconstruction: A Systematic Review of Techniques and Outcomes.

BACKGROUND: Significant improvements in sensory recovery after innervated breast reconstruction have been reported. However, surgical approaches and sensory testing methods have been widely variable. This systematic review aimed to synthesize neurotization techniques and outcomes in breast reconstruction surgery. METHODS: A comprehensive literature search of the MEDLINE, Embase, Web of Science, and Cochrane databases was conducted to identify all studies reporting outcomes of neurotization in innervated breast reconstruction. Data extracted from each study included neurotization techniques, operative times, sensory methods and outcomes, and patient-reported outcomes. RESULTS: A total of 1,350 articles were identified, and 23 articles were included for analysis. Nerve coaptation was performed in 536 breasts and 419 patients, with techniques consisting of direct coaptation (65.1% of flaps), coaptation with nerve conduit (26.3%), and coaptation with nerve allograft (8.6%). The neural component of operating time ranged from 8 to 38 min, and the pooled neurotization success rate among nine studies that reported this outcome was 90.6% (95% CI: 83.6%-96.0%). Overall, innervated breasts achieved earlier and superior sensory recovery that was more uniformly distributed throughout the flap compared to non-innervated breasts. Despite high heterogeneity between studies, all included studies supported neurotized breast reconstruction to improve the rate, quality, and magnitude of sensory recovery. CONCLUSIONS: Neurotization during breast reconstruction may be worth the investment of additional operating time to increase the prospect of high-quality sensory recovery. Further investigation with standardized sensory testing methods and patient-reported outcome tools is needed to definitively support neurotization as a standard of care in breast reconstruction surgery.

Immediate targeted nipple-areolar complex re-innervation: Improving outcomes in immediate autologous breast reconstruction.

Breast reconstruction often renders the chest skin and nipple areolar complex (NAC) insensate. We propose a new technique of preserving the intercostal nerves during mastectomy and using them to reinnervate the NAC following mastectomy and immediate autologous tissue reconstruction. The technique involves preservation of the lateral intercostal nerves during mastectomy, dissection of the lateral intercostal nerves to length, coaptation of the intercostal nerves to a nerve graft which is then tunneled through the free flap and the distal nerve graft is then coapted to the nerve stumps at the base of the NAC. We performed a retrospective analysis of 14 breasts, which underwent nipple reinnervation during immediate autologous breast reconstruction. Mean age was 49 years (range: 32-61 years). Sensory outcomes, as tested with Semmes-Weinstein monofilaments, were compared to a cohort of breasts that underwent nipple sparing mastectomy without neurotization. Compared to control patients, there was no statistically significant difference (p = 0.0969) in sensation between pre-operative and post-operative nipple sensation at final follow-up. This proof-of-concept study suggests that immediate re-innervation of the NAC in the setting of immediate breast reconstruction enhances recovery of the NAC sensation.

Sensory recovery of the breast after innervated and non-innervated autologous breast reconstructions: A systematic review.

BACKGROUND: The sensory recovery of the reconstructed breast is an undervalued topic in the field of autologous breast reconstruction. This systematic review aimed to evaluate the available literature on the sensory recovery of the breast after innervated and non-innervated autologous breast reconstructions and to assess the possible benefits of sensory nerve coaptation compared to spontaneous reinnervation of the flap. METHODS: A comprehensive literature search was conducted in PubMed, Embase and the Cochrane Library to identify all eligible studies regarding the sensory recovery of all types of innervated and non-innervated autologous breast reconstructions. RESULTS: The search yielded 334 hits, of which 32 studies concerning 1177 breast reconstructions were included. The amount of heterogeneity between the studies was high, which made the pooling of data difficult. The studies indicated that spontaneous reinnervation of autologous breast reconstructions occurred to a variable extent, depending on how and when it was measured. Despite these variable results, the sensory recovery of innervated flaps, however, was superior, started earlier and gradually improved over time with a higher chance of approaching normal values than non-innervated flaps. There is a lack of studies that assess the return of erogenous sensation and quality of life. CONCLUSION: The current evidence shows that nerve coaptation results in superior sensory recovery of the reconstructed breast compared to spontaneous reinnervation of the flap. This review illustrates that more standardised, high-quality studies with adequate sample sizes are needed to objectively evaluate the sensory recovery of the breast after autologous breast reconstructions.