1. Risk Factors and Racial and Ethnic Disparities in Patients With Breast Cancer-Related Lymphedema
- Author
-
Giacomo Montagna, Jennifer Zhang, Varadan Sevilimedu, Jillian Charyn, Kelly Abbate, Ethan A. Gomez, Babak Mehrara, Monica Morrow, and Andrea V. Barrio
- Subjects
Adult ,Cancer Research ,Sentinel Lymph Node Biopsy ,Brief Report ,Breast Neoplasms ,Cohort Studies ,Oncology ,Risk Factors ,Axilla ,Ethnicity ,Humans ,Lymph Node Excision ,Female ,Lymphedema ,Prospective Studies - Abstract
IMPORTANCE: Risk factors for breast cancer–related lymphedema (BCRL) after axillary lymph node dissection (ALND) are poorly understood. OBJECTIVE: To evaluate rates of and risk factors associated with BCRL in a prospective cohort of women treated with ALND. DESIGN, SETTING, AND PARTICIPANTS: This prospective BCRL screening study performed at a tertiary cancer center enrolled women with breast cancer 18 years and older undergoing breast surgery and unilateral ALND in the primary setting or after sentinel lymph node biopsy. EXPOSURES: Risk of BCRL during the first 2 years after ALND and radiotherapy. MAIN OUTCOMES AND MEASURES: Patients were prospectively evaluated with arm volume (perometer) measurements, and BCRL was defined as a relative volume change of 10% or greater from baseline. Cumulative incidence of BCRL was assessed using competing risk analysis. Risk factors for BCRL were assessed on univariate and multivariable analyses. RESULTS: From November 2016 to March 2020, 304 patients were enrolled; 276 had at least 1 longitudinal measurement. Median (IQR) age was 48 (40-57) years; median (IQR) body mass index, calculated as weight in kilograms divided by height in meters squared, was 26.4 (22.5-31.2). Of the 276 patients included in the analysis, 29 (11%) self-identified as Asian, 55 (20%) as Black, 16 (6%) as Hispanic, 166 (60%) as White, and 10 (3%) as unknown race and ethnicity; 70% received neoadjuvant chemotherapy (NAC); 93% received nodal irradiation. The 24-month BCRL rate was 23.8% (95% CI, 17.9%-29.8%), with significant variation by race and ethnicity (24-month rate: 37.2% [Black], 27.7% [Hispanic], 22.5% [Asian], and 19.8% [White]; P = .004). The BCRL rates were also higher among patients receiving NAC vs up-front surgery (24-month rate: 29.3% vs 11.1%; P = .01). On multivariable analysis, Black race and Hispanic ethnicity (compared with White race) (odds ratio [OR], 3.88; 95% CI, 2.14-7.08 and OR, 3.01; 95% CI, 1.10-7.62, respectively; P
- Published
- 2023