Elastographic and Ultrasonographic Evaluation of Patients With Breast Cancer Related Lymphedema

The aim of this study is to evaluate the feasibility of shear-wave elastography for the diagnosis and staging of breast cancer related lymphedema by assessing the skin and subcutaneous tissues of the arm and forearm, which could serve as a reference standard and be more easily applicable in daily life; and to investigate the relationship between the patients' symptoms and elastographic measurements.

Both upper extremities of 72 patients with lymphedema and 72 healthy upper extremities were included in the study. The patients' demographic and clinical data were recorded. The thickness and echogenicity of the skin and subcutaneous tissues of all extremities were evaluated with B-mode ultrasonography, and the stiffness of the skin and subcutaneous tissues was evaluated with shear-wave elastography. The lymphedema arm and the healthy arm of the patients were compared both with each other and with the data of the control group. Interobserver and intraobserver reliability analysis was performed for ultrasonography and elastography measurements. The patients' pain, tension, weight, and stiffness symptoms associated with lymphedema were questioned using a numerical scale. The patients' functionality and participation in daily life activities were evaluated with the Quick DASH and Life Impact Index questionnaires. The relationship between these findings and elastographic and ultrasonographic parameters was analyzed.