Publications by authors named "Brigid Killelea"

Article Synopsis
  • The study analyzed data on patients who underwent lumpectomy for breast cancer between 2016 and 2020 to examine disparities in oncoplastic surgery, which involves various forms of breast reconstruction.
  • Out of 18,748 patients, a significant number received oncoplastic surgery, but the frequency varied widely by county, and patients with public insurance were less likely to have access to these procedures.
  • The findings suggest that disparities in oncoplastic surgery are influenced by local healthcare practices and insurance types, indicating a need for service expansion and potential billing reforms to improve access.
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Background: Black cohosh (BC) () may prevent and treat breast cancer through anti-proliferative, pro-apoptotic, anti-estrogenic, and anti-inflammatory effects. This study sought to evaluate the effect of BC on tumor cellular proliferation, measured by Ki67 expression, in a pre-operative window trial of ductal carcinoma in situ (DCIS) patients.

Methods: Patients were treated pre-operatively for 2 to 6 weeks with BC extract.

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The survival for breast cancer (BC) is improving but remains lower in Black women than White women. A number of factors potentially drive the racial differences in BC outcomes. The aim of our study was to determine if insulin resistance (defined as homeostatic model assessment for insulin resistance (HOMA-IR)), mediated part of the relationship between race and BC prognosis (defined by the improved Nottingham prognostic index (iNPI)).

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Background: Despite no proven benefit in clinical outcomes, perioperative magnetic resonance imaging (MRI) was rapidly adopted into breast cancer care in the 2000's, offering a prime opportunity for assessing factors influencing overutilization of unproven technology.

Objectives: To examine variation among physician patient-sharing networks in their trajectory of adopting perioperative MRI for breast cancer surgery and compare the characteristics of patients, providers, and mastectomy use in physician networks that had different adoption trajectories.

Methods And Findings: Using the Surveillance, Epidemiology, and End Results-Medicare database in 2004-2009, we identified 147 physician patient-sharing networks (caring for 26,886 patients with stage I-III breast cancer).

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Background: Numerous studies have evaluated the effect of post-mastectomy radiotherapy (PMRT) on autologous breast reconstruction, but the variability of PMRT regimens and inadequate controls have made results difficult to interpret. Therefore, in this study, irradiated free-flaps are compared to non-irradiated internal controls in patients who underwent immediate bilateral reconstruction followed by unilateral PMRT to better delineate the effect of PMRT. The role of regional nodal irradiation (RNI) is also specifically assessed.

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Background: Angiosarcoma of the breast is rare and aggressive. It can occur as a de novo tumor or secondary to breast cancer treatment. The purpose of this study is to analyze differences between patients with primary and secondary angiosarcoma of the breast and investigate potential risk factors for its development.

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Objectives: Although demand for price transparency in healthcare is growing, variation in private payors' payments to surgeons for oncologic resection has not been well characterised. Our aim was to assess variation of private payors' payments to surgeons for cancer resection using data based on fee-for-service allowed amounts, billed by a large mix of commercial payors and third-party administrators.

Setting: Fair Health (FH), an independent, not-for-profit organisation that collects and compiles claims data from payors nationwide.

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Introduction: Timing of autologous reconstruction relative to postmastectomy radiation therapy (PMRT) is debated. Benefits of immediate reconstruction must be weighed against a possibly heightened risk of complications from flap irradiation. We reviewed flap outcomes after single operation plus PMRT in a large institutional cohort.

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Objective: Healthcare hackathons are fast-paced, mentored events that bring together individuals with diverse skillsets to identify clinical needs and propose solutions. Traditionally geared toward device development and workflow optimization, platforms that address women and minorities in surgery are rare. We aimed to expand the traditional healthcare hackathon model to include a novel workforce development (WD) track to address concerns faced by surgeons and trainees.

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Background: Racial disparities in breast cancer survival between Black and White women persist across all stages of breast cancer. The metabolic syndrome (MetS) of insulin resistance disproportionately affects more Black than White women. It has not been discerned if insulin resistance mediates the link between race and poor prognosis in breast cancer.

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The use of sentinel lymph node biopsy (SLNB) for ductal carcinoma in situ (DCIS) is controversial. Using population-cohort data, we examined whether SLNB improves long-term outcomes among patients with DCIS who underwent breast-conserving surgery. We identified 12 776 women aged 67-94 years diagnosed during 2001-2013 with DCIS who underwent breast-conserving surgery from the US Surveillance, Epidemiology, and End Results-Medicare dataset, 1992 (15.

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Objective: Among older adult women with early-stage breast cancer who undergo lumpectomy, the benefits of radiotherapy vary according to tumor characteristics and life expectancy. We aimed to develop a risk calculator to predict individualized probability of long-term survival and local recurrence, accounting for these factors.

Methods: We developed a simulation model to estimate an individual patient's risk of local recurrence and all-cause mortality according to age, comorbidities, functional status, tumor characteristics, and radiotherapy status.

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Objective: Evaluate income disparities in receipt of needle biopsy among Medicare beneficiaries and describe the magnitude of this variation across physician peer groups.

Methods: The Surveillance, Epidemiology and End Results (SEER)-Medicare database was queried from 2007-2009. Physician peer groups were constructed.

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While radiotherapy can be safely omitted in many older women with early-stage breast cancer after lumpectomy, approximately two-thirds of eligible women still undergo this treatment. We surveyed 63 older women with stage I (T1N0M0), estrogen-receptor-positive breast cancer who underwent lumpectomy, and were considering/receiving radiotherapy. Participants perceived that radiotherapy would reduce their 10-year risk of local recurrence by an average of 18.

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Purpose: To evaluate if real-world utilization of neoadjuvant endocrine therapy (NET) is associated with similar rates of response and breast conservation surgery (BCS) compared to neoadjuvant chemotherapy (NAC).

Methods: Our population-based assessment used the National Cancer Data Base to identify women diagnosed with stage II-III, hormone receptor (HR)-positive BC who underwent surgery and received endocrine therapy from 2004 to 2014. Women were categorized by receipt of NET, NAC or no neoadjuvant therapy.

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Introduction: Although breast cancer incidence is higher among white women, black women are more likely to have aggressive tumors with less favorable histology, and to have a worse prognosis. Obesity and alcohol consumption have been identified as two modifiable risk factors for breast cancer, while physical activity may offer protection. Little however is known about the association of these factors with race on the severity of breast cancer.

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Background: There is limited compensation data for breast surgery benchmarking. In 2018, the American Society of Breast Surgeons conducted its second membership survey to obtain updated compensation data as well as information on practice type and setting.

Methods: In October 2018, a survey was emailed to 2676 active members.

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Background: Communication between patients and health providers influences patient satisfaction, but it is unknown whether similarity in communication styles results in higher patient satisfaction.

Methods: This study was conducted in the Smilow Cancer Hospital Breast Center. During routine follow-up visits, patients completed a Communication Styles Assessment (CSA), health survey (SF-12), Princess Margaret Hospital Satisfaction with Doctor Questionnaire, and brief demographic form.

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