Nicole L Stout1, Lucinda A Pfalzer2, Ellen Levy3, Charles McGarvey4, Barbara Springer5, Lynn H Gerber6, Peter Soballe7. 1. National Naval Medical Center, 8901 Wisconsin Avenue, Breast Care Center Bldg. 19, 3rd floor, Bethesda, MD 20889-5600(†). 2. University of Michigan-Flint, Flint, MI(‡). 3. National Institutes of Health, Bethesda, MD(§). 4. National Institutes of Health, Bethesda, MD, and CLM Consulting Rockville, MD(∥). 5. Office of the Surgeon General, Falls Church, VA(¶). 6. National Institutes of Health, Bethesda, MD, and George Mason University, Fairfax, VA(⁎⁎). 7. National Naval Medical Center, Breast Care Center, Bethesda, MD, and Naval Medical Center San Diego, CA(††).
Abstract
OBJECTIVE: To demonstrate that segmental changes along the upper extremity occur before the onset of breast cancer-related lymphedema (BCRL). These changes may be subclinical in nature and may be predictive of the onset of chronic lymphedema. DESIGN: A retrospective subset analysis of a larger prospective cohort trial. PATIENT COHORT: A total of 196 patients provided consent and were enrolled in the prospective study. Subclinical lymphedema developed in 46 of these patients. Limb volume data were available for 45 of these 46 patients from visits before the onset of lymphedema and were used in this analysis. We compared this group with an age-matched control group without BCRL from the same cohort (n = 45). SETTING: Military hospital outpatient breast care center. METHODS: Women were enrolled and assessed preoperatively. Baseline measures of limb volume were obtained with the use of optoelectronic perometry, and reassessment was conducted at 1, 3, 6, 9, and 12 months postoperatively. BCRL was identified in 46 of 196 women at an average of 6.9 months postoperatively. A retrospective analysis was conducted in which we examined volume changes over four 10-cm segments of the limb at the visits before the onset of BCRL. By using repeated-measures multivariate analysis of variance, we compared segmental volumes between groups at preoperative baseline, time of diagnosis of BCRL, and time of follow-up after early intervention. Linear regression analysis was performed to determine the strength of the relationship between total limb volume change with segmental volumes at the time of diagnosis of BCRL. MAIN OUTCOME MEASUREMENTS: We hypothesized that segmental volume changes occur and can be measured in the limb before the onset of lymphedema. RESULTS: At arm segments 10-20 cm (P = .044) and 20-30 cm (P <.001), a significant volume increase was noted before the diagnosis of subclinical BCRL. Segmental volume changes correlated to the total limb volume (TLV) change. At segments 20-30 cm, the coefficient of determination was r(2) = 0.952, and at 10-20 cm it was r(2) = 0.845, suggesting that these segments predicted TLV changes. CONCLUSION: Serial interval assessment of limb volume segments may be an important clinical tool to detect early-onset lymphedema before TLV changes.
OBJECTIVE: To demonstrate that segmental changes along the upper extremity occur before the onset of breast cancer-related lymphedema (BCRL). These changes may be subclinical in nature and may be predictive of the onset of chronic lymphedema. DESIGN: A retrospective subset analysis of a larger prospective cohort trial. PATIENT COHORT: A total of 196 patients provided consent and were enrolled in the prospective study. Subclinical lymphedema developed in 46 of these patients. Limb volume data were available for 45 of these 46 patients from visits before the onset of lymphedema and were used in this analysis. We compared this group with an age-matched control group without BCRL from the same cohort (n = 45). SETTING: Military hospital outpatient breast care center. METHODS:Women were enrolled and assessed preoperatively. Baseline measures of limb volume were obtained with the use of optoelectronic perometry, and reassessment was conducted at 1, 3, 6, 9, and 12 months postoperatively. BCRL was identified in 46 of 196 women at an average of 6.9 months postoperatively. A retrospective analysis was conducted in which we examined volume changes over four 10-cm segments of the limb at the visits before the onset of BCRL. By using repeated-measures multivariate analysis of variance, we compared segmental volumes between groups at preoperative baseline, time of diagnosis of BCRL, and time of follow-up after early intervention. Linear regression analysis was performed to determine the strength of the relationship between total limb volume change with segmental volumes at the time of diagnosis of BCRL. MAIN OUTCOME MEASUREMENTS: We hypothesized that segmental volume changes occur and can be measured in the limb before the onset of lymphedema. RESULTS: At arm segments 10-20 cm (P = .044) and 20-30 cm (P <.001), a significant volume increase was noted before the diagnosis of subclinical BCRL. Segmental volume changes correlated to the total limb volume (TLV) change. At segments 20-30 cm, the coefficient of determination was r(2) = 0.952, and at 10-20 cm it was r(2) = 0.845, suggesting that these segments predicted TLV changes. CONCLUSION: Serial interval assessment of limb volume segments may be an important clinical tool to detect early-onset lymphedema before TLV changes.
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