Assessment of the effect of the American Society of Breast Surgery guidelines on contralateral prophylactic mastectomy rates for unilateral breast cancer.

BACKGROUND: In July 2016, the American Society of Breast Surgeons published guidelines discouraging contralateral prophylactic mastectomy for average-risk women with unilateral breast cancer. We incorporated these into practice with structured patient counseling and aimed to assess the effect of this initiative on contralateral prophylactic mastectomy rates. METHODS: We evaluated female patients with unilateral breast cancer undergoing mastectomy at our institution from January 2011 to November 2022. Variables associated with contralateral prophylactic mastectomy and trends over time were analyzed using the Wilcoxon rank sum test or χ2 analysis as appropriate. RESULTS: Among 3,208 patients, (median age 54 years) 1,366 (43%) had a unilateral mastectomy, and 1,842 (57%) also had a concomitant contralateral prophylactic mastectomy. Across all patients, contralateral prophylactic mastectomy rates significantly decreased post-implementation from 2017 to 2019 (55%) vs 2015 to 2016 (62%) (P = .01) but increased from 2020 to 2022 (61%). Immediate breast reconstruction rate was 70% overall (81% with contralateral prophylactic mastectomy and 56% without contralateral prophylactic mastectomy, P < .001). Younger age, White race, mutation status, and earlier stage were also associated with contralateral prophylactic mastectomy. Genetic testing increased from 27% pre-guideline to 74% 2020 to 2022, as did the proportion of patients with a pathogenic variant (4% pre-guideline vs 11% from 2020-2022, P < .001), of whom 91% had a contralateral prophylactic mastectomy. Among tested patients without a pathogenic variant and patients not tested, contralateral prophylactic mastectomy rates declined from 78% to 67% and 48% to 38% pre -and post-guidelines, respectively, P < .001. CONCLUSION: Implementation of specific patient counseling was effective in decreasing contralateral prophylactic mastectomy rates. While recognizing that patient choice plays a significant role in the decision for contralateral prophylactic mastectomy, further educational efforts are warranted to affect contralateral prophylactic mastectomy rates, particularly in the setting of negative genetic testing.

Impact of anticipated financial burden on patient decision to undergo contralateral prophylactic mastectomy.

BACKGROUND: We sought to determine whether patients undergoing contralateral, prophylactic mastectomy have greater anticipated and actual costs and financial burden than patients undergoing unilateral mastectomy, whether these financial considerations influence surgical decision making, and whether this affects satisfaction with surgical decision and overall quality of life. METHODS: Female patients with unilateral breast cancer who underwent mastectomy at a large academic institution were surveyed regarding their financial experience surrounding the decision whether to undergo contralateral, prophylactic mastectomy. RESULTS: Of 109 patients approached, 101 completed the survey (response rate: 93%); 55 patients (55%) had contralateral, prophylactic mastectomy. Of the respondents, 16% reported that their decision was at least somewhat affected by anticipated costs. More patients opting for contralateral, prophylactic mastectomy had a "very large" anticipated financial burden than unilateral mastectomy patients (26% vs 9%, P = .037), but actual out-of-pocket costs and financial burden were similar between the two groups. Contralateral, prophylactic mastectomy patients, however, did not differ from unilateral mastectomy patients in their satisfaction with their decision nor quality of life, regardless of out-of-pocket costs or financial burden (P > .05). CONCLUSION: Although contralateral, prophylactic mastectomy patients are more likely to anticipate a "very large" financial burden compared with unilateral mastectomy patients, this does not seem to deter them from the contralateral procedure.

The development of a template for psychological assessment of women considering risk-reducing or contralateral prophylactic mastectomy: A national Delphi consensus study.

OBJECTIVE: Risk-reducing mastectomies (RRM) and contralateral prophylactic mastectomies (CPM) are increasingly prevalent strategies to reduce breast cancer risk. Given the associated physical and emotional challenges, presurgical psychological assessment is frequently recommended for this population, yet limited research exists to guide this. This study aimed to reach a consensus on the most relevant content and format of a psychological consultation prior to RRM/CPM. METHODS: A modified two-round online Delphi study was conducted Australia-wide. Expert participants (n = 25), including psychologists, surgeons, nurses, oncologists, genetic specialists, and researchers completed a round-one survey, informed by a literature review, previous qualitative study and expert clinicians' input. This required participants to rate their agreement with 36 statements regarding potential content of a psychological consultation and provide feedback on format/structure. A round-two survey comprised items that had not reached consensus and six new items suggested by participants. Parameters for statement consensus were set a priori at >75% agreement. RESULTS: Expert participants indicated agreement with the majority of statements (39/42, 92.8%), endorsing that the assessment should include (1) patient understanding of the RRM/CPM procedure/cancer risk, (2) potential physical/emotional impact of surgery, (3) informed decision-making, and (4) past/current psychological issues (anxiety and body image). A provisional assessment template and user manual is provided. CONCLUSIONS: This research culminated in a consensus-based template to guide psychological assessment of women considering RRM/CPM. This enables health professionals to assess suitability for surgery and preempt challenges within a standardised framework. Future evaluation of the acceptability and effectiveness of the template in clinical settings is warranted.

The association between patient attitudes and values and the strength of consideration for contralateral prophylactic mastectomy in a population-based sample of breast cancer patients.

BACKGROUND: Little is known about how the individual decision styles and values of breast cancer patients at the time of treatment decision making are associated with the consideration of different treatment options and specifically with the consideration of contralateral prophylactic mastectomy (CPM). METHODS: Newly diagnosed patients with early-stage breast cancer who were treated in 2013-2014 were identified through the Surveillance, Epidemiology, and End Results registries of Los Angeles and Georgia and were surveyed approximately 7 months after surgery (n = 2578; response rate, 71%). The primary outcome was the consideration of CPM (strong vs less strong). The association between patients' values and decision styles and strong consideration was assessed with multivariate logistic regression. RESULTS: Approximately one-quarter of women (25%) reported strong/very strong consideration of CPM, and another 29% considered it moderately/weakly. Decision styles, including a rational-intuitive approach to decision making, varied. The factors most valued by women at the time of treatment decision making were as follows: avoiding worry about recurrence (82%) and reducing the need for more surgery (73%). In a multivariate analysis, patients who preferred to make their own decisions, those who valued avoiding worry about recurrence, and those who valued avoiding radiation significantly more often strongly considered CPM (P < .05), whereas those who reported being more logical and those who valued keeping their breast did so less often. CONCLUSIONS: Many patients considered CPM, and the consideration was associated with both decision styles and values. The variability in decision styles and values observed in this study suggests that formally evaluating these characteristics at or before the initial treatment encounter could provide an opportunity for improving patient clinician discussions. Cancer 2017;123:4547-4555. © 2017 American Cancer Society.

Motivations for contralateral prophylactic mastectomy as a function of socioeconomic status.

BACKGROUND: Despite no demonstrated survival advantage for women at average risk of breast cancer, rates of contralateral prophylactic mastectomy (CPM) continue to increase. Research reveals women with higher socioeconomic status (SES) are more likely to select CPM. This study examines how indicators of SES, age, and disease severity affect CPM motivations. METHODS: Patients (N = 113) who underwent CPM at four Indiana University affiliated hospitals completed telephone interviews in 2013. Participants answered questions about 11 CPM motivations and provided demographic information. Responses to motivation items were factor analyzed, resulting in 4 motivational factors: reducing long-term risk, symmetry, avoiding future medical visits, and avoiding treatments. RESULTS: Across demographic differences, reducing long-term risk was the strongest CPM motivation. Lower income predicted stronger motivation to reduce long-term risk and avoid treatment. Older participants were more motivated to avoid treatment; younger and more-educated patients were more concerned about symmetry. Greater severity of diagnosis predicted avoiding treatments. CONCLUSIONS: Reducing long-term risk is the primary motivation across groups, but there are also notable differences as a function of age, education, income, and disease severity. To stop the trend of increasing CPM, physicians must tailor patient counseling to address motivations that are consistent across patient populations and those that vary between populations.