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Open research questions in Lymphatic System and Diseases

324 gap statements mined from Lymphatic System and Diseases papers in our 7.9M-paper local library, which holds 1,134 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The relationship between the morphology and dominance of the arteries in the palm is not well understood.

    The relationship between the morphology and dominance of the arteries in the palm · 2026 · DOI

  • The study is limited by the lack of protein-level validation and functional assays. The initiation of mitochondrial FAO depends on carnitine palmitoyltransferase 1A, which enables the transport of long-chain fatty acids into the mitochondrial matrix.

    Metabolic Syndrome-Driven Changes in Cardiac Lymphatic Endothelium: mRNA Expression and Emerging Questions · 2026 · DOI

  • The response of cardiac lymphatic vessels to metabolic syndrome remains poorly understood. There is a lack of protein-level validation and functional assays in the study of cardiac lymphatic endothelial cells.

    Metabolic Syndrome-Driven Changes in Cardiac Lymphatic Endothelium: mRNA Expression and Emerging Questions · 2026 · DOI

  • Although sustained self-management behaviors are important for improving or preventing the worsening of cancer-related lymphedema (CRL), the definition of self-regulation, a core element of self-management behavior, remains unclear.

    Self-regulation in patients with cancer-related lymphedema: A concept analysis · 2026 · DOI

  • Although previous studies have reported that complex decongestive therapy redistributes fluid from the affected leg to other body segments, whether fluid reduction after LVA results from systemic elimination or intersegmental redistribution remains unclear.

    Systemic Elimination Rather than Redistribution: Segmental Body Water Analysis after Leg Lymphovenous Anastomosis · 2026 · DOI

  • However, the optimal treatment modality for preventing cellulitis has not yet been established.

    Surgical Treatment for Extremity Lymphedema Reduces Frequency of Cellulitis Episodes: A Cohort Study and Meta-Analysis · 2026 · DOI

  • Despite its clinical significance, the pathophysiology underlying its onset and the factors regulating its severity remain poorly understood.

    Baseline subcutaneous adipose tissue volume as a potential determinant of lymphedema manifestation · 2026 · DOI

  • Despite major advancements in lymphatic care, there remains a lack of consensus across institutions regarding the evaluation and surgical management of lymphedema.

    Surgical Treatment of Lymphedema at LE&RN Comprehensive Centers of Excellence · 2025 · DOI

  • Fingolimod (FTY720), a clinically used immunomodulator, has been shown to ameliorate autism-like behaviors, but its underlying mechanism remains unclear.

    Fingolimod Exerts Therapeutic Effects on Autistic Mice via Improving the Structure and Function of Meningeal Lymphatics · 2025 · DOI

  • Current evidence surrounding lymphedema in the arthroplasty context is scarce, and historical barriers have hindered its diagnosis.

    Lymphedema Is Severely Underdiagnosed in the Arthroplasty Clinic Population: A Bioimpedance Investigation · 2025 · DOI

  • There is a need for further research on the effect of physical intervention on preventing BCRL. The current evidence on the efficacy of physical therapy for lymphedema management is limited.

    Efficacy of physical therapy for prevention and treatment of postoperative lymphedema in breast cancer: a systematic review and meta-analysis · 2026 · DOI

  • There is a lack of understanding of the biological processes underlying lipedema. The current evidence does not yet establish a unified mechanism for the condition.

    Comorbidities in lipedema: toward a systemic perspective – a narrative review · 2026 · DOI

  • This narrative review has several limitations. The available studies are heterogeneous in diagnostic criteria, study design, and cohort selection, which may influence the comparability of reported findings. Most cohorts derive from specialized referral centers and rely largely on observational data, and in some cases self-reported information, potentially introducing selection bias and confounding factors.

    Comorbidities in lipedema: toward a systemic perspective – a narrative review · 2026 · DOI

  • The varying lymphedema rates between measurement techniques is a concern. There is a need to compare lymphedema rates using different measurement techniques.

    Diagnosing Lymphedema After Axillary Surgery · 2026 · DOI

  • As the severity of prolongation differed among the LE+, LE− and sLE+ groups, it may suggest that in some cases remodeling processes are insufficient, which leads to LE progression.

    Prolongation of Postoperative Drainage Time in Indocyanine Green Lymphography as a Potential Marker for Lymphedema Development—A Prospective Pilot Study · 2026 · DOI

  • Although molecular docking suggested that multiple components may target PRKCB, which specific component plays a dominant role in vivo remains to be further isolated and identified. In addition, no in vivo animal experiments were conducted in this study; the therapeutic efficacy of LBT on SL and the in vivo regulatory role of PRKCB still need to be validated in animal models.

    Liubao tea as a functional fermented food: multi-omics insights into its modulation of lymphatic endothelial cell metabolism · 2026 · DOI

  • There is a need for further research to determine the most effective exercise modalities and optimal timing. The variability in intervention methodologies and outcome assessment presents a significant constraint. There is a lack of evidence-based guidelines for the use of exercise and physiotherapy in gynecological cancer survivors.

    Exercise and physiotherapy for enhancing muscle strength, managing lower-limb lymphedema, and improving sexual function in the treatment and survivorship of gynecological cancers · 2026 · DOI

  • The paper highlights the need for further research on the oncologic outcomes of ILR. The authors emphasize the importance of considering lymphatic drainage patterns in the evaluation of ILR outcomes.

    Commentary on “Investigating the oncological impact of immediate lymphatic reconstruction within patients with upper and lower limb malignancy: A PRISMA systematic review” by Zaidi, H., Zaidi, H. & Gokani, V. · 2026 · DOI

  • The limited availability of oncologic reporting in ILR literature is a significant gap. The lack of robust long-term evidence regarding recurrence, metastasis, and survival substantially limits the ability to counsel patients with confidence.

    Commentary on “Investigating the oncological impact of immediate lymphatic reconstruction within patients with upper and lower limb malignancy: A PRISMA systematic review” by Zaidi, H., Zaidi, H. & Gokani, V. · 2026 · DOI

  • Although vascularized lymph node transfer(VLNT) has emerged as a promising option for refractory cases, existing evidence is limited by small sample size and inconclusive results.

    Vascularized Lymph Node Transfer For Lower Extremity Lymphedema: A Systematic Review And Meta-analysis · 2026 · DOI

  • Lymphovenous bypass (LVB) is a well-established microsurgical treatment for secondary lymphedema, yet the optimal anatomical site for anastomosis remains unclear.

    Regional Effects Of Forearm Lymphovenous Bypass: A Prospective Analysis Of Distal And Proximal Volume Changes · 2026 · DOI

  • Lower extremity lymphedema (LEL) is a frequent, under-recognized, and chronic condition.

    Screening for Posttraumatic Lower Extremity Lymphedema: Patient Characteristics, Risk Factors, and Quality of Life Outcomes · 2026 · DOI

  • While LEL can negatively impact quality of life, the poorly documented prevalence and severity of lymphedema-related symptoms complicates the ability to identify high-risk patients and improve the selection of candidates for emerging microsurgical interventions.

    The Qaly study: Quality of life and lower extremity lymphedema in 174 patients after inguinal lymphadenectomy · 2025 · DOI

  • The majority of the included studies had a low or moderate risk of bias, but some studies lacked blinding of participants, personnel, and outcome assessors. The study's results may be limited by the heterogeneity among the included studies.

    Efficacy of physical therapy for prevention and treatment of postoperative lymphedema in breast cancer: a systematic review and meta-analysis · 2026 · DOI

  • The persistent healthcare burden presented by BCRL represents a source of significant concern. The current standards of care in the diagnosis and treatment of breast cancer continue to pose a risk of post-treatment lymphatic disruption.

    Comprehensive overview of management and risk assessment of breast cancer-related lymphedema: a multidisciplinary approach · 2026 · DOI

Most-cited papers in Lymphatic System and Diseases

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Open questions raised by papers listed on this page include: (1) The relationship between the morphology and dominance of the arteries in the palm is not well understood (“The relationship between the morphology and dominance of the arteries in the…”, 2026); (2) The study is limited by the lack of protein-level validation and functional assays (“Metabolic Syndrome-Driven Changes in Cardiac Lymphatic Endothelium: mRNA…”, 2026); (3) Although sustained self-management behaviors are important for improving or preventing the worsening of cancer-related lymphedema (CRL), the definition of self-regulation, a core element of self-management behavior, remains unclear (“Self-regulation in patients with cancer-related lymphedema: A concept analysis”, 2026); (4) The optimal treatment modality for preventing cellulitis has not yet been established (“Surgical Treatment for Extremity Lymphedema Reduces Frequency of Cellulitis…”, 2026); (5) Despite its clinical significance, the pathophysiology underlying its onset and the factors regulating its severity remain poorly understood (“Baseline subcutaneous adipose tissue volume as a potential determinant of…”, 2026). 324 gap statements have been mined from Lymphatic System and Diseases papers in our 7.9M-paper local library, which holds 1,134 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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