Evidence for the clinical effectiveness of decongestive lymphoedema treatment for breast cancer-related arm lymphoedema, a systematic review

Purpose Early treatment is advised for breast cancer-related arm lymphoedema (BCRL), a common sequelae of breast cancer treatment. Expert guidance recommends two-phase decongestive lymphoedema treatment (DLT), although evidence is lacking for current treatment protocols and UK women are routinely offered self-treatment with hosiery. This systematic review considered evidence regarding treatment of early BCRL, that is, within 12 months of developing BCRL. Methods A systematic review of evidence for clinical effectiveness of DLT for women with less than 12-month BCRL duration (early BCRL) was undertaken using the Joanna Briggs Institute (JBI) method. Studies included women with < 12-month or mean < 9-month BCRL duration; some studies reported only one eligible group. The original search was conducted in 2016 and updated in 2018 and 2022. Methodological quality of identified studies was assessed using JBI critical appraisal instruments. Outcomes of interest were extracted with eligible results displayed in narrative and tabular format. Strength of evidence was rated using the GRADE system. Results Seven trials and three descriptive studies provided weak evidence (grade B) for effectiveness of DLT for early BCRL. Heterogeneous protocols limited comparison of findings. There was no evidence for the most effective treatment or treatment combination or optimal frequency or duration of treatment. Conclusion There is no evidence to justify change in current lymphoedema treatment, whether self-treatment with hosiery (UK) or two-phase DLT (other countries). Further research for the early BCRL population is required. Implications for cancer survivors Women with early BCRL require early and effective treatment although this updated review shows there is still no evidence for what that treatment should be.