Abstract
Purpose
Breast cancer-related lymphedema (BCRL) is an incurable complication occurring after breast cancer treatment. The influence of obesity/overweight on the development of BCRL at different points after surgery was seldom verified. We aimed to determine the cut-off BMI/weight value associated with an increased risk of BCRL at different postoperative time in Chinese breast cancer survivors.
Methods
Patients who underwent breast surgery plus axillary lymph node dissection (ALND) were retrospectively evaluated. Disease and treatment characteristics of participants were collected. BCRL was diagnosed by circumference measurements. Univariate and multivariable logistic regression was used to assess the relationship of lymphedema risk with BMI/weight and other disease- and treatment-related factors.
Results
518 patients were included. Lymphedema occurred more frequently among breast cancer patients with preoperative BMI ≥ 25 kg/m2 (37.88%) than among those with preoperative BMI < 25 kg/m2(23.32%), with significant differences at 6–12 and 12–18 months after surgery (χ2 = 23.183, P = 0.000; χ2 = 5.279, P = 0.022). By multivariable logistics analysis, preoperative BMI ≥ 30 kg/m2 presented a significantly greater risk of lymphedema than a preoperative BMI < 25 kg/m2 (OR [95% CI] = 2.928 [1.565, 5.480]). Other factors, including radiation (breast/chest wall + axilla vs. none: OR [95% CI] = 3.723[2.271–6.104]), was an independent risk factor for lymphedema.
Conclusions
Preoperative obesity was an independent risk factor for BCRL in Chinese breast cancer survivors, and a preoperative BMI ≥ 25 kg/m2 indicated greater likelihood of lymphedema development within 6–18 months postoperatively.
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Data availability
Data are not available.
Abbreviations
- BMI:
-
Body mass index
- CI:
-
Confidence interval
- BCRL:
-
Breast cancer-related lymphedema
- ALND:
-
Axillary lymph-node dissection
- SD:
-
Standard deviation
- WHO:
-
World Health Organization
- RLND:
-
Regional lymph node irradiation
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Shaomei Shang and Ling Wang were responsible for the study design. Ning Liu and Miao Yu performed data collection. Hongbo Chen and Yuanzhen Li performed data analysis. Ling Wang, Hongbo Chen, Yuanzhen Li, and Huixue Wang were responsible for the drafting of the manuscript. Shaomei Shang made critical revision of the manuscript. All authors read and approved the final manuscript.
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Wang, L., Chen, H., Li, Y. et al. Body mass index increases the risk of breast cancer-related lymphedema at 6–18 months after surgery: a retrospective study. Support Care Cancer 31, 278 (2023). https://doi.org/10.1007/s00520-023-07721-7
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DOI: https://doi.org/10.1007/s00520-023-07721-7