Understanding why some breast cancer patients feel swelling without measurable lymphedema

The Enigma of Subjective Lymphedema: Who and Why do Patients Report Lymphedema After Breast Cancer Treatment Without an Objective Measurable Swelling? The Role of Lymphatic and Sensory Processing Problems

Not applicable Interventional Universitaire Ziekenhuizen KU Leuven · NCT06324721

This study is trying to understand why some breast cancer patients feel swelling in their arms or chest even when tests show they don't have lymphedema, to help improve their care.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment230 (estimated)
Ages18 Years and up
SexAll
SponsorUniversitaire Ziekenhuizen KU Leuven Academic / other
Locations1 site (Leuven, Vlaams-Brabant)
Trial IDNCT06324721 on ClinicalTrials.gov

What this trial studies

This study investigates the phenomenon of subjective breast cancer-related lymphedema (BCRL), where patients report sensations of swelling despite no objective evidence of lymphedema. It aims to explore the prevalence and transitions between different states of BCRL over time, as well as the underlying mechanisms contributing to these sensations. Various measurement techniques will be employed, including volumetric measurements, bioimpedance spectroscopy, and sensory processing assessments. The goal is to better understand the factors influencing subjective BCRL to improve patient care.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older diagnosed with unilateral non-metastatic or oligometastatic breast cancer who are scheduled for surgery.

Not a fit: Patients with distant metastases, planned bilateral lymph node surgery, or edema from other causes may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved management strategies for patients experiencing subjective sensations of swelling after breast cancer treatment.

How similar studies have performed: While the specific focus on subjective BCRL is novel, related studies on lymphedema have shown varying degrees of success in understanding and managing the condition.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion criteria:

1. adults (men and women) who are ≥ 18 years of age
2. diagnosed with primary unilateral non-metastatic or oligometastatic breast cancer
3. scheduled for surgery (mastectomy or breast conserving surgery; in combination with axillary lymph node dissection or sentinel node biopsy)
4. able to read, understand, and speak Dutch
5. have voluntary written informed consent of the patient

Exclusion Criteria:

1. distant metastases
2. planned bilateral lymph node surgery
3. oedema of the arm from another cause
4. an allergy to iodine or Indocyanine Green (ICG), or
5. physically or mentally unable to participate throughout the entire duration of the study

Where this trial is running

Leuven, Vlaams-Brabant

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Breast CancerLymphedemaSensory Processing Disorderlymphedemasubclinical edemanociceptive problemsneuropathic problemscentral sensory problems
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.