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Low level laser therapy (Photobiomodulation therapy) for breast cancer-related lymphedema: a systematic review.

Low level laser therapy (Photobiomodulation therapy) for breast cancer-related lymphedema: a systematic review.
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Baxter GD, Liu L, Petrich S, Gisselman AS, Chapple C, Anders JJ, Tumilty S,


Baxter GD, Liu L, Petrich S, Gisselman AS, Chapple C, Anders JJ, Tumilty S, (click to view)

Baxter GD, Liu L, Petrich S, Gisselman AS, Chapple C, Anders JJ, Tumilty S,

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BMC cancer 2017 12 0717(1) 833 doi 10.1186/s12885-017-3852-x
Abstract
BACKGROUND
Breast cancer related lymphedema (BCRL) is a prevalent complication secondary to cancer treatments which significantly impacts the physical and psychological health of breast cancer survivors. Previous research shows increasing use of low level laser therapy (LLLT), now commonly referred to as photobiomodulation (PBM) therapy, for BCRL. This systematic review evaluated the effectiveness of LLLT (PBM) in the management of BCRL.

METHODS
Clinical trials were searched in PubMed, AMED, Web of Science, and China National Knowledge Infrastructure up to November 2016. Two reviewers independently assessed the methodological quality and adequacy of LLLT (PBM) in these clinical trials. Primary outcome measures were limb circumference/volume, and secondary outcomes included pain intensity and range of motion. Because data were clinically heterogeneous, best evidence synthesis was performed.

RESULTS
Eleven clinical trials were identified, of which seven randomized controlled trials (RCTs) were chosen for analysis. Overall, the methodological quality of included RCTs was high, whereas the reporting of treatment parameters was poor. Results indicated that there is strong evidence (three high quality trials) showing LLLT (PBM) was more effective than sham treatment for limb circumference/volume reduction at a short-term follow-up. There is moderate evidence (one high quality trial) indicating that LLLT (PBM) was more effective than sham laser for short-term pain relief, and limited evidence (one low quality trial) that LLLT (PBM) was more effective than no treatment for decreasing limb swelling at short-term follow-up.

CONCLUSIONS
Based upon the current systematic review, LLLT (PBM) may be considered an effective treatment approach for women with BCRL. Due to the limited numbers of published trials available, there is a clear need for well-designed high-quality trials in this area. The optimal treatment parameters for clinical application have yet to be elucidated.

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