Background: Upper arm lymphedema is a common complication one year after breast cancer surgery, which profoundly impacts patients' quality of life.
Case summary: We reported a case of lymphedema induced by prolonged sun exposure 11 years after breast cancer surgery.
Conclusion: Breast screening, patient education and follow-up after hospital discharge could help to prevent upper-arm lymphedema.
Keywords: Breast cancer lymphedema; Breast neoplasms; Case report; Sun-burn.
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