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Publication Record


Bilateral Changes in Deep Tissue Environment After Manual Lymphatic Drainage in Patients with Breast Cancer Treatment-Related Lymphedema.
Donahue PM, Crescenzi R, Scott AO, Braxton V, Desai A, Smith SA, Jordi J, Meszoely IM, Grau AM, Kauffmann RM, Sweeting RS, Spotanski K, Ridner SH, Donahue MJ
(2017) Lymphat Res Biol 15: 45-56
MeSH Terms: Adult, Axilla, Breast Cancer Lymphedema, Breast Neoplasms, Case-Control Studies, Female, Humans, Lymph Node Excision, Lymphatic Vessels, Magnetic Resonance Imaging, Massage, Middle Aged, Treatment Outcome
Show Abstract · Added April 6, 2017
BACKGROUND - Breast cancer treatment-related lymphedema (BCRL) arises from a mechanical insufficiency following cancer therapies. Early BCRL detection and personalized intervention require an improved understanding of the physiological processes that initiate lymphatic impairment. Here, internal magnetic resonance imaging (MRI) measures of the tissue microenvironment were paired with clinical measures of tissue structure to test fundamental hypotheses regarding structural tissue and muscle changes after the commonly used therapeutic intervention of manual lymphatic drainage (MLD).
METHODS AND RESULTS - Measurements to identify lymphatic dysfunction in healthy volunteers (n = 29) and patients with BCRL (n = 16) consisted of (1) limb volume, tissue dielectric constant, and bioelectrical impedance (i.e., non-MRI measures); (2) qualitative 3 Tesla diffusion-weighted, T-weighted and T-weighted MRI; and (3) quantitative multi-echo T MRI of the axilla. Measurements were repeated in patients immediately following MLD. Normative control and BCRL T values were quantified and a signed Wilcoxon Rank-Sum test was applied (significance: two-sided p < 0.05). Non-MRI measures yielded significant capacity for discriminating between arms with versus without clinical signs of BCRL, yet yielded no change in response to MLD. Alternatively, a significant increase in deep tissue T on the involved (pre T = 0.0371 ± 0.003 seconds; post T = 0.0389 ± 0.003; p = 0.029) and contralateral (pre T = 0.0365 ± 0.002; post T = 0.0395 ± 0.002; p < 0.01) arms was observed. Trends for larger T increases on the involved side after MLD in patients with stage 2 BCRL relative to earlier stages 0 and 1 BCRL were observed, consistent with tissue composition changes in later stages of BCRL manifesting as breakdown of fibrotic tissue after MLD in the involved arm. Contrast consistent with relocation of fluid to the contralateral quadrant was observed in all stages.
CONCLUSION - Quantitative deep tissue T MRI values yielded significant changes following MLD treatment, whereas non-MRI measurements did not vary. These findings highlight that internal imaging measures of tissue composition may be useful for evaluating how current and emerging therapies impact tissue function.
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