Once the diagnosis of lymphoedema has been established, patients can be followed up at 6-monthly to yearly intervals, depending on the severity of disease and the frequency of cellulitis. Expert consensus is that patients with lymphoedema should have an objective quantification of swelling, both as a baseline and to monitor disease progression and treatment effectiveness over time.[1]Lurie F, Malgor RD, Carman T, et al. The American Venous Forum, American Vein and Lymphatic Society and the Society for Vascular Medicine expert opinion consensus on lymphedema diagnosis and treatment. Phlebology. 2022 May;37(4):252-66.
https://journals.sagepub.com/doi/10.1177/02683555211053532
http://www.ncbi.nlm.nih.gov/pubmed/35258350?tool=bestpractice.com
The AFTD-pitting test may be used and is recommended by the International Lymphoedema Framework as a physical sign to identify and categorise lymphoedema; it includes four factors: Anatomical location of oedema, Force required to pit, the amount of Time, and the Definition of oedema.[1]Lurie F, Malgor RD, Carman T, et al. The American Venous Forum, American Vein and Lymphatic Society and the Society for Vascular Medicine expert opinion consensus on lymphedema diagnosis and treatment. Phlebology. 2022 May;37(4):252-66.
https://journals.sagepub.com/doi/10.1177/02683555211053532
http://www.ncbi.nlm.nih.gov/pubmed/35258350?tool=bestpractice.com
[53]Moffatt C, Franks P, Keeley V, et al. The development and validation of the LIMPRINT methodology. Lymphat Res Biol. 2019 Apr;17(2):127-34.
https://www.liebertpub.com/doi/10.1089/lrb.2018.0081
http://www.ncbi.nlm.nih.gov/pubmed/30995185?tool=bestpractice.com
Circumferential tape measurements or water-displacement volumetry are used to monitor disease progression and treatment response.[129]Sagen A, Karesen R, Skaane P, et al. Validity for the simplified water displacement instrument to measure arm lymphedema as a result of breast cancer surgery. Arch Phys Med Rehabil. 2009 May;90(5):803-9.
http://www.ncbi.nlm.nih.gov/pubmed/19406300?tool=bestpractice.com
Water-displacement volumetry is achieved by placing the affected extremity into a cylinder, with the displaced water representing the volume of the extremity. Tape measurements of limb circumference at 5 to 10 cm intervals from routine anatomical landmarks are not as accurate. In addition, bioimpedance analysis, a technique used to compare the composition of fluid compartments within the body (achieved by using resistance to electrical current), can also be used to determine tissue alterations and fluid changes in patients with lymphoedema.[10]Manrique OJ, Bustos SS, Ciudad P, et al. Overview of lymphedema for physicians and other clinicians: a review of fundamental concepts. Mayo Clin Proc. 2020 Aug 20:S0025-6196(20)30033-1.
https://www.mayoclinicproceedings.org/article/S0025-6196(20)30033-1/fulltext
http://www.ncbi.nlm.nih.gov/pubmed/32829905?tool=bestpractice.com
[55]Buendia R, Essex T, Kilbreath SL, et al. Estimation of arm adipose tissue quotient using segmental bioimpedance spectroscopy. Lymphat Res Biol. 2018 Aug;16(4):377-84.
http://www.ncbi.nlm.nih.gov/pubmed/29252107?tool=bestpractice.com
[130]National Institute for Health and Care Excellence (NICE). L-Dex U400 for lymphoedema after breast cancer treatment: medtech innovation briefing 111. Jul 2017 [internet publication].
https://www.nice.org.uk/advice/mib111
Additional assessment using imaging techniques such as lymphoscintigraphy, ultrasound or magnetic resonance imaging may provide useful additional information regarding disease progression and treatment outcomes.[47]Executive Committee of the International Society of Lymphology. The diagnosis and treatment of peripheral lymphedema: 2020 consensus document of the International Society of Lymphology. Lymphology. 2020;53(1):3-19.
https://journals.uair.arizona.edu/index.php/lymph/article/download/23775/22411
http://www.ncbi.nlm.nih.gov/pubmed/32521126?tool=bestpractice.com
Ongoing assessment of health-related quality of life and patient’s perceptions of symptoms and functioning using validated disease-specific tools is recommended.[47]Executive Committee of the International Society of Lymphology. The diagnosis and treatment of peripheral lymphedema: 2020 consensus document of the International Society of Lymphology. Lymphology. 2020;53(1):3-19.
https://journals.uair.arizona.edu/index.php/lymph/article/download/23775/22411
http://www.ncbi.nlm.nih.gov/pubmed/32521126?tool=bestpractice.com
Examples include the Lymph-ICF-Lower Limb (Lymph-ICF-LL) and Lymphoedema Quality of Life Inventory (LyQLI).[123]Devoogdt N, De Groef A, Hendrickx A, et al. Lymphoedema functioning, disability and health questionnaire for lower limb lymphoedema (Lymph-ICF-LL): reliability and validity. Phys Ther. 2014 May;94(5):705-21.
https://academic.oup.com/ptj/article/94/5/705/2735628
http://www.ncbi.nlm.nih.gov/pubmed/24415775?tool=bestpractice.com
[124]Klernäs P, Johnsson A, Horstmann V, et al. Lymphedema quality of life inventory (LyQLI)-development and investigation of validity and reliability. Qual Life Res. 2015 Feb;24(2):427-39.
http://www.ncbi.nlm.nih.gov/pubmed/25633655?tool=bestpractice.com