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Dynamic lymph flow imaging in lymphedema. Normal and abnormal patterns.

K Nawaz, M M Hamad, S Sadek

    Clinical Nuclear Medicine
    |September 1, 1986
    PubMed
    Summary
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    This study reveals three distinct patterns of lymphatic flow in patients with lower extremity lymphedema using dynamic lymphoscintigraphy. These patterns aid in diagnosing and understanding lymphatic dysfunction.

    Area of Science:

    • Nuclear Medicine
    • Radiopharmacology
    • Vascular Imaging

    Background:

    • Lymphedema of the lower extremities significantly impacts patient quality of life.
    • Accurate assessment of lymphatic flow is crucial for effective lymphedema management.
    • Dynamic lymphoscintigraphy offers a non-invasive method to visualize lymphatic system function.

    Purpose of the Study:

    • To characterize dynamic lymphatic flow patterns in patients with lower extremity lymphedema.
    • To identify distinct scintigraphic patterns associated with lymphatic dysfunction.
    • To evaluate the utility of Tc-99m HSA lymphoscintigraphy in lymphedema assessment.

    Main Methods:

    • 23 patients with lower extremity lymphedema underwent dynamic lymphoscintigraphy.
    • Intradermal injection of Technetium-99m human serum albumin (Tc-99m HSA) in the feet.

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  • Image acquisition using a gamma camera and computer system over 40 minutes, with delayed imaging at 90 minutes.

    • Main Results:

    • Three distinct lymphatic flow patterns were identified: normal, enhanced, and a third pattern (details truncated).
    • Normal flow showed symmetric or slightly asymmetric patterns with early lymph node visualization.
    • Enhanced pattern indicated fast lymph flow through dilated lymphatics with potential pooling.

    Conclusions:

    • Dynamic lymphoscintigraphy with Tc-99m HSA effectively differentiates lymphatic flow patterns in lymphedema.
    • The identified patterns provide valuable insights into lymphatic system abnormalities.
    • This imaging technique aids in the diagnosis and management of lower extremity lymphedema.