Backgrounds: Assessing quality of life (QoL) using a well-developed and validated questionnaire is an essential part of a breast cancer-related lymphedema (BCRL) treatment. However, a QoL questionnaire with the best psychometric properties is so far unknown. The aim of this systematic review is to evaluate the psychometric properties of the questionnaires measuring the QoL of patients with BCRL. Methods: A thorough search was performed to identify published studies in electronic databases such as Medline (via Ovid), EBSCOhost, PubMed, Scopus, and Web of Science, on 8 February 2022, by using search terms as follows: ‘quality of life’; ‘breast cancer’; ‘upper limb’; ‘lymphedema’; ‘questionnaire’; and ‘measurement properties.’ Two reviewers conducted article selection, data extraction, and quality assessment independently. The third reviewer helped solve any possible disagreements between the two reviewers. The COSMIN checklist and manual were used to assess the quality of included studies. Results: A total of nineteen articles with nine questionnaires were included and assessed using the COSMIN Risk of Bias checklist. Most studies only assessed content validity, structural validity, internal consistency, reliability, and construct validity. Lymph-ICF-UL showed the most ‘sufficient’ and ‘high’ quality of evidence ratings for its measurement properties. Conclusion: The most appropriate questionnaire for use based on our assessment is Lymph-ICF-UL.

Background: Breast-cancer related lymphedema (BCRL) is a common condition among breast cancer survivors that could impact the quality of life (QoL) of patients. Exploring the QoL of the patients with BCRL using valid and reliable QoL is crucial to capture the status of this important aspect hence appropriate intervention could be implement to patient. However, so far no scientific review is available, which reports the psychometric properties of the QoL questionnaires used in BCRL. The purpose of this systematic review is to comprehensively assess the psychometric properties of QoL questionnaires in patients with BCRL. Methods: We will perform comprehensive searches of published studies in electronic databases such as Medline (via Ovid), EBSCOhost, PubMed, Scopus, and Web of Science by using the following search terms: “quality of life”; “breast cancer”; “upper limb”; “lymphedema”; “questionnaire”; and “measurement properties.” Only full-text articles in English language are included. Two reviewers will independently conduct the article selection, data extraction, and quality assessment. Any possible conflict between the 2 reviewers is going to be solved with the help of a third reviewer. The Consensus-based Standards for the Selection of Health Measurement Instrument (COSMIN) checklist and manual will be used to assess the selected study quality. Results: This review will provide an updated overview of available lymphedema-specific questionnaires used in BCRL population and then recommend the most valid and reliable QoL questionnaire for clinical and research use in patients with BCRL. Conclusion: This review may help the clinician and researcher to find an updated overview of various questionnaires used to assess BCRL patients’ QoL. Ethics and dissemination: This review will use data from published studies. Therefore, ethical approval is not required prior to this review. The results of this review will be published in a peer-reviewed journal or presented at conferences. Study Registration: OSF osf.io/8xwym.