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Related Experiment Videos

Disorders of lymph flow

C L Witte1, M H Witte

  • 1Department of Surgery, University of Arizona, College of Medicine, Tucson, AZ, USA.

Academic Radiology
|April 1, 1995
PubMed
Summary

Lymphedema, a condition of tissue swelling due to lymphatic system failure, can lead to severe limb deformity and complications. Advanced imaging techniques offer new hope for understanding and managing these complex swelling disorders.

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Area of Science:

  • Vascular Biology
  • Immunology
  • Pathophysiology

Background:

  • Disturbances in blood capillary fluid exchange and lymphatic transport are key to tissue swelling disorders.
  • Lymphedema, characterized by lymphatic insufficiency, often presents insidiously before persistent swelling and potential infection (lymphangitis) lead to deformity (elephantiasis).
  • Chronic lymphedema involves fluid and protein accumulation, impaired immune cell function, infection susceptibility, and tissue changes like overgrowth and scarring.

Purpose of the Study:

  • To elucidate the complex pathophysiology of lymphedema and related swelling disorders.
  • To highlight the role of lymphatic stasis in various visceral conditions and neoplastic disorders.
  • To emphasize the diagnostic and monitoring potential of advanced, noninvasive imaging techniques.

Main Methods:

  • Review of existing literature on lymphatic circulation, fluid exchange, and immune cell trafficking.
  • Analysis of the pathological characteristics of long-standing lymphedema.
  • Discussion of emerging imaging modalities like lymphoscintigraphy and MR imaging.

Main Results:

  • Lymphatic transport failure leads to macromolecular trapping, immune dysfunction, and increased infection risk in lymphedema.
  • Lymph stasis is implicated in visceral diseases (e.g., pulmonary fibrosis, enteritis) and vascular tumors (e.g., angiosarcoma).
  • Lymphoscintigraphy and MR imaging are crucial for diagnosing peripheral lymphedema and understanding edematous states.

Conclusions:

  • Defective lymphatic function is central to lymphedema and contributes to diverse visceral and neoplastic conditions.
  • New imaging technologies are vital for improving the understanding, diagnosis, and management of lymphatic and edematous disorders.
  • Noninvasive imaging can monitor treatment efficacy for lymphatic transport and function defects.

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