Annual surveillance mammography after early-stage breast cancer and breast cancer mortality

Opportunities for personalised follow-up in breast cancer: the gap between daily practice and recurrence risk

PURPOSE

Follow-up guidelines barely diverge from a one-size-fits-all approach, even though the risk of recurrence differs per patient. However, the personalization of breast cancer care improves outcomes for patients. This study explores the variation in follow-up pathways in the Netherlands using real-world data to determine guideline adherence and the gap between daily practice and risk-based surveillance, to demonstrate the benefits of personalized risk-based surveillance compared with usual care.

METHODS

Patients with stage I-III invasive breast cancer who received surgical treatment in a general hospital between 2005 and 2020 were selected from the Netherlands Cancer Registry and included all imaging activities during follow-up from hospital-based electronic health records. Process analysis techniques were used to map patients and activities to investigate the real-world utilisation of resources and identify the opportunities for improvement. The INFLUENCE 2.0 nomogram was used for risk prediction of recurrence.

RESULTS

In the period between 2005 and 2020, 3478 patients were included with a mean follow-up of 4.9 years. In the first 12 months following treatment, patients visited the hospital between 1 and 5 times (mean 1.3, IQR 1-1) and received between 1 and 9 imaging activities (mean 1.7, IQR 1-2). Mammogram was the prevailing imaging modality, accounting for 70% of imaging activities. Patients with a low predicted risk of recurrence visited the hospital more often.

CONCLUSIONS

Deviations from the guideline were not in line with the risk of recurrence and revealed a large gap, indicating that it is hard for clinicians to accurately estimate this risk and therefore objective risk predictions could bridge this gap.

Longitudinal adherence to surveillance for late effects of cancer treatment: a population-based study of adult survivors of childhood cancer

BACKGROUND

Adult survivors of childhood cancer are at elevated risk of morbidity and mortality compared to the general population, but their adherence to lifelong periodic surveillance is suboptimal. We aimed to examine adherence to surveillance guidelines for high-yield tests and identify risk factors for nonadherence in adult survivors of childhood cancer.

METHODS

In this retrospective, population-based cohort study, we used health care administrative data from Ontario, Canada, to identify adult survivors of childhood cancer diagnosed between 1986 and 2014 who were at elevated risk of therapy-related colorectal cancer, breast cancer, or cardiomyopathy. Using a Poisson regression framework, we assessed longitudinal adherence and predictors of adherence to the Children's Oncology Group surveillance guideline.

RESULTS

Among 3241 survivors, 327 (10%), 234 (7%), and 3205 (99%) were at elevated risk for colorectal cancer, breast cancer, and cardiomyopathy, respectively. Within these cohorts, only 13%, 6%, and 53% were adherent to recommended surveillance as of February 2020. During a median follow-up of 7.8 years, the proportion of time spent adherent was 14% among survivors at elevated risk for colorectal cancer, 10% for breast cancer, and 43% for cardiomyopathy. Significant predictors of adherence varied across the risk groups, but higher comorbidity was associated with adherence to recommended surveillance.

INTERPRETATION

Survivors of childhood cancer in Ontario are rarely up to date for recommended surveillance tests. Tailored interventions beyond specialized clinics are needed to improve surveillance adherence.

Imaging Surveillance Options for Individuals With a Personal History of Breast Cancer: AJR Expert Panel Narrative Review

Annual surveillance mammography is recommended for breast cancer survivors on the basis of observational studies and meta-analyses showing reduced breast cancer mortality and improved quality of life. However, breast cancer survivors are at higher risk of subsequent breast cancer and have a fourfold increased risk of interval breast cancers compared with individuals without a personal history of breast cancer. Supplemental surveillance modalities offer increased cancer detection compared with mammography alone, but utilization is variable, and benefits must be balanced with possible harms of false-positive findings. In this review, we describe the current state of mammographic surveillance, summarize evidence for supplemental surveillance in breast cancer survivors, and explore a risk-based approach to selecting surveillance imaging strategies. Further research identifying predictors associated with increased risk of interval second breast cancers and development of validated risk prediction tools may help physicians and patients weigh the benefits and harms of surveillance breast imaging and decide on a personalized approach to surveillance for improved breast cancer outcomes.

Adherence to the Dutch Breast Cancer Guidelines for Surveillance in Breast Cancer Survivors: Real-World Data from a Pooled Multicenter Analysis

Background

Regular follow-up after treatment for breast cancer is crucial to detect potential recurrences and second contralateral breast cancer in an early stage. However, information about follow-up patterns in the Netherlands is scarce.

Patients and Methods

Details concerning diagnostic procedures and policlinic visits in the first 5 years following a breast cancer diagnosis were gathered between 2009 and 2019 for 9916 patients from 4 large Dutch hospitals. This information was used to analyze the adherence of breast cancer surveillance to guidelines in the Netherlands. Multivariable logistic regression was used to relate the average number of a patient’s imaging procedures to their demographics, tumor–treatment characteristics, and individual locoregional recurrence risk (LRR), estimated by a risk-prediction tool, called INFLUENCE.

Results

The average number of policlinic contacts per patient decreased from 4.4 in the first to 2.0 in the fifth follow-up year. In each of the 5 follow-up years, the share of patients without imaging procedures was relatively high, ranging between 31.4% and 33.6%. Observed guidelines deviations were highly significant (P < .001). A higher age, lower UICC stage, and having undergone radio- or chemotherapy were significantly associated with a higher chance of receiving an imaging procedure. The estimated average LRR-risk was 3.5% in patients without any follow-up imaging compared with 2.3% in patients with the recommended number of 5 imagings.

Conclusion

Compared to guidelines, more policlinic visits were made, although at inadequate intervals, and fewer imaging procedures were performed. The frequency of imaging procedures did not correlate with the patients’ individual risk profiles for LRR.

Mammographic Surveillance in Older Women With Breast Cancer in Canada and the United States: Are We Choosing Wisely?

PURPOSE

Guidelines on mammographic surveillance after breast cancer treatment have been disseminated internationally and incorporated into Choosing Wisely recommendations to reduce low-value care. However, adherence within different countries before their publication is unknown.

METHODS AND MATERIALS

Low-value mammography, defined as "short-interval" (within 6 months of radiation) or "high-frequency" (>1 within 12 months of radiation), was compared in Medicare fee-for-service in the United States and Ontario, Canada. Women ≥65 years diagnosed with breast cancer who underwent breast-conserving therapy with a minimum of 24 months of follow-up were included (n = 19,715 United States; 6479 Ontario). Secondary outcomes were patient and physician characteristics associated with discordance.

RESULTS

Short-interval mammography was higher in the United States than in Ontario (55.9% vs 38.0%, P < .001), as was high-frequency (39.6% vs 7.9%, P < .001). In Ontario, younger age (42% ≥85 vs 58% <74 years, P < .001) and chemotherapy (69% vs 51%, P < .001) were associated with short-interval mammography; in the United States, age, earlier diagnosis year, stage, chemotherapy, rurality, and academic center treatment were associated with greater use. Chemotherapy was associated with high-frequency mammography in both countries (13% vs 7% in Ontario, P < .001; 69% vs 51% in United States, P = .02); younger age, earlier diagnosis year, stage, and nonacademic center treatment were associated in the United States. In both countries, radiation oncologists had the highest proportion of providers ordering low-value mammograms.

CONCLUSIONS

Despite significant evidence guiding surveillance mammography recommendations, there are high rates of short-interval mammography in both the United States and Ontario, and high rates of high-frequency mammography in the United States. Further international efforts, such as Choosing Wisely, are needed to reduce low-value mammography.

Mammography use in relation to comorbidities and functional limitations among older breast cancer survivors

PURPOSE

We sought to examine associations of mammography utilization with comorbidities and functional limitations in older breast cancer survivors.

METHODS

Female breast cancer survivors (N = 1064) identified in the 2016 and 2018 Behavioral Risk Factor Surveillance System (BRFSS) who were aged ≥ 65 years were included for this study. Mammography use, major comorbidities (diabetes mellitus, myocardial infarction, coronary heart disease, stroke, chronic obstructive pulmonary disease, arthritis, chronic kidney disease, depression, and malignancy other than breast cancer), functional limitations (impairment of vision, audition, cognition, and mobility), and other covariates were measured by self-report. We used multivariable logistic regression models to calculate adjusted odds ratios (aOR) of comorbidities and functional limitations. Subgroup analyses were conducted by age (65-74 vs. ≥ 75 years) and survival time (< 10 vs. ≥ 10 years), and interactions were examined by Wald tests.

RESULTS

Of the 1064 respondents, 841 (79.0%) had comorbidities, 418 (39.3%) had functional limitations, and 744 (69.9%) underwent mammography last year. Overall, the mean age was 73.8 years (SD = 5.1 years) and 91.4% were white. The multivariable model identified inverse associations with mammography use for functional limitations (≥ 2 vs. 0: aOR = 0.61, 95% CI = 0.39-0.95, p-trend = 0.09) but not comorbidities (≥ 2 vs. 0: aOR = 0.91, 95% CI = 0.61-1.35, p-trend = 0.62). The Wald test did not find any significant interaction.

CONCLUSIONS

A higher burden of functional limitations, not comorbidities, is associated with a lower rate of mammography use among older breast cancer survivors.

IMPLICATIONS FOR CANCER SURVIVORS

Interventions are needed to individualize surveillance mammography among older breast cancer survivors based on their health status.

A comparative study of pain experienced during successive mammography examinations in patients with a family history of breast cancer and those who have had breast cancer surgery

INTRODUCTION

To measure mammography-related pain in two groups of women undergoing regular surveillance as a baseline for future care.

METHODS

Following ethical approval, two hundred and forty two women aged 32-84 years (mean 54), were invited by written invitation to participate in the study. Two hundred women accepted the invitation, 100 women had a family history (FH) of breast cancer, 100 had undergone conservative surgery (FU) for breast cancer and were currently asymptomatic. A validated pain scale was used to score the participants' perceived pain before compression based on memory, immediately after compression and one week later. A series of baseline parameters were also captured including compression force, breast size/density, menstrual history and any adverse events following mammography to allow the investigation of relationships.

RESULTS

There was a strong correlation (r = 0.79, p < 0.001) between previous pain scores and current pain scores, no significant correlations were found between breast size, breast density or total compression force and pain. Pain scores reduced between previous and current examinations and there was consistency in overall pain scores, despite variations in the compression forces applied.

CONCLUSION

Physical side effects from mammography can develop and extend beyond the examination period. Patients' prior experience of pain was the only significant predictor of current pain in this study.

IMPLICATIONS FOR PRACTICE

Data on past mammography experiences are essential to improve future pain outcomes. Post-mammography aftercare should be a routine feature of the examination.