The BEACON Trial: Diagnostic Tools for Breast Lymphedema After Treatment for Breast Cancer

The goal of this observational study is to learn if participants agree to take part in the study, if the methods we are using for the study are feasible for the participants and the researchers, and to study how well two tools (tissue dielectric constant and ultrasound) measure breast edema after breast conserving surgery for breast cancer. Participants who agree to be in the study will be asked to come in for one appointment of approximately two hours. All data will be collected during this one visit. Participants will be asked to fill out two questionnaires regarding their symptoms, and one questionnaire regarding their surgical scar. The research staff will conduct a clinical examination, measure breast edema using ultrasound and tissue dielectric constant, measure arm volume with the perometer and fluid with the SOZO, and take photographs of both breasts.

NCT Number	NCT06900023
Lead Sponsor	Massachusetts General Hospital
Conditions	Breast Edema, Breast Lymphedema, Lymphedema, Breast Cancer, Lymphedema
Enrollment	30 participants
Start Date	2025-05-05
Primary Completion	2026-12 (estimated)
Study Completion	2027-12 (estimated)
Updated on ClinicalTrials.gov	2025-07-16