Abstract
PURPOSE: Breast cancer-related lymphedema (BCRL) disproportionately impacts patients facing socioeconomic challenges. The influence of socioeconomic disparities on preventive procedures such as immediate lymphatic reconstruction (ILR) is unclear. We sought to determine the impact of area deprivation index (ADI) on BCRL incidence and patient-reported outcomes (PROs) following ILR. METHODS: We retrospectively studied consecutive patients who underwent ILR following ALND between 2017 and 2024 across multiple hospitals within a hospital network. Patients were stratified into quartiles based on ADI (Q1 = least deprived, Q4 = most deprived). BCRL prevalence and condition-specific (LYMPH-Q) quality-of-life performance was compared and correlated across quartiles via multivariable regression, including subgroup analysis by ethnicity. RESULTS: We identified 172 patients with follow-up time of 23.1 ± 15.2 months. Patients residing in the most deprived neighborhoods (ADI Q4) demonstrated significantly higher BCRL rates compared to those from less deprived neighborhoods (Q1-3) (16.3% vs. 3.9%; p = 0.006). In multivariable regression, residence in the most deprived neighborhoods remained independently associated with a significantly higher risk of BCRL (OR 5.10, 95% CI 1.30-20.30; p = 0.021). Subgroup analysis revealed that Black patients in the highest ADI quartile reported significantly worse LYMPH-Q function scores (median 62.0 vs 100.0; p = 0.020), compared to Black patients residing in less deprived areas. ADI was not significantly associated with surgical complications or unplanned reoperations. CONCLUSIONS: Neighborhood socioeconomic disadvantage significantly increases BCRL risk following ILR and is associated with significantly worse patient-reported functional outcomes among Black patients. Targeted interventions addressing neighborhood-level factors are critical to mitigate these disparities and ensure equitable outcomes.