Abstract
Abstract Background: We evaluated the impact of structured surveillance using bioimpedance spectroscopy (BIS) to prevent clinical BCRL in a group of high-risk (axillary lymph node dissection) patients. Methods: From April 2010 through November 2016, 93 patients who were treated with axillary lymph node dissection (ALND) were prospectively monitored with BIS using L-Dex (Impedimed). Patients received a pre-operative baseline L-Dex measurement followed by post-operative assessments at regular intervals. An elevated L-Dex score was defined as an increase of ≥10 points above baseline (considered subclinical BCRL). Intervention consisted of applying an over the counter (OTC) sleeve for 4 weeks followed by re-evaluation. The need for complete decongestive physiotherapy (CDP) represented a surrogate for the development of clinically significant, chronic BCRL. Results: Median follow-up was 24 months (range: 0.3-206.4 months). The median number of nodes removed was 19 (range: 5-41) and the median number of positive nodes was 3. Median age was 53 years old. Eighty five percent of patients underwent mastectomy and the remainder breast conserving therapy. 55% of patients received taxane based chemotherapy, 24% received some form of axillary RT (15% high tangents and 9% comprehensive regional nodal RT) and 74% had an elevated body mass index (BMI, > 25). Overall, 75% of these patients had at least one additional high-risk feature, 48% had at least two, and 6% had 3 (either taxane chemotherapy, axillary RT or elevated BMI). Thirty-three patients (35.4%) developed an elevated L-Dex score at some point during follow up. Overall, 10 patients (11%) required CDP at any point after treatment. Conclusions: The results of this analysis support previously published data on the efficacy of prospective BCRL surveillance and early intervention using BIS. Of the 93 high-risk patients prospectively followed and managed in this structured BCRL protocol, 11% required CDP. These results compare favorably to all contemporary studies reporting BCRL rates in high-risk patients. Citation Format: Whitworth P, Cooper A, Shah C, Vicini F. The impact of a structured surveillance protocol using bioimpedance spectroscopy (BIS) on preventing breast cancer related lymphedema (BCRL) in high-Risk patients [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P3-14-08.
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