# Reliability and Clinical Feasibility of Three Assessment Methods for Head and Neck Lymphedema in Head and Neck Cancer Patients

## TL;DR

This study compares three methods for assessing head and neck lymphedema in cancer patients, finding that neck circumference measurement is the most reliable and efficient for clinical use.

## Contribution

The study evaluates and compares the reliability and clinical feasibility of three lymphedema assessment methods in head and neck cancer patients.

## Key findings

- Neck circumference measurement showed the highest reliability and was the fastest and most clinically feasible method.
- Local tissue water assessment was found to be the most reliable method for assessing the head region.
- Dermal thickness assessment had low reliability and limited clinical utility.

## Abstract

This study investigates methods for assessing external head and neck lymphedema, a common and often debilitating condition that can occur after treatment for head and neck cancer. This study aimed to evaluate the reliability and clinical feasibility of three methods: local tissue water assessment, neck circumference assessment, and dermal thickness assessment. By testing these methods on head and neck cancer patients, the study aimed to determine which method is most reliable, easy to use, and suitable for clinical practice. The methods evaluated different aspects of HNL, suggesting that combining them may improve overall assessment of lymphedema in head and neck cancer patients. These findings ultimately lead to better patient care and more effective monitoring of this condition in clinical settings.

Background/Objectives: Head and neck lymphedema (HNL) is a common complication after head and neck cancer (HNC) treatment. Reliable and feasible assessment methods are essential for monitoring and management. This study aimed to evaluate the reliability and clinical feasibility of three methods for assessing external HNL in HNC patients: local tissue water (%) using the MoistureMeterD Compact (MMDC), neck circumference using a tape measure, and dermal thickness using B-mode ultrasound. Methods: Thirty-three HNC patients with potential HNL were included. Measurements were performed on the same day, twice by the same rater and once by a different rater. Intraclass correlation coefficients (ICC2,1), (relative) standard error of measurement ((%)SEM), smallest real difference (SRD), systematic differences across measurement occasions, and Bland–Altman plots with 95% limits of agreement were analyzed. Time efficiency and clinical limitations were assessed. As an exploratory analysis, Spearman correlations among methods were examined. Results: All methods demonstrated moderate to very strong reliability (ICCs2,1 0.781–0.994), except dermal thickness (ICCs2,1 0.136–0.354). Differences between raters and within one rater were not clinically meaningful. Neck circumference showed the highest reliability (ICCs2,1 0.958–0.994) and was the fastest to perform with the fewest limitations. The methods showed weak correlations with each other. Conclusions: Neck circumference was the most reliable and time-efficient method assessing HNL in clinical practice but is limited to the neck region. For the head, local tissue water assessment seems the most reliable and feasible. The methods assess different aspects of HNL. Further research should confirm how these methods can complement each another.