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Dextran microsphere embolization: experimental and clinical experience with radiologic-pathologic correlation. Work

J E Dion, R N Rankin, F Viñuela

    Radiology
    |September 1, 1986
    PubMed
    Summary
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    Dextran microspheres effectively occlude blood vessels in canine kidneys, even with small amounts. Careful technique is crucial to prevent complications during embolization procedures.

    Area of Science:

    • Veterinary Radiology
    • Interventional Radiology
    • Pathology

    Background:

    • Dextran microspheres are utilized as embolic agents in various medical applications.
    • Understanding their radiologic and pathologic effects is essential for safe clinical use.

    Purpose of the Study:

    • To evaluate the radiologic and pathologic effects of canine renal embolization using dextran microspheres.
    • To assess the efficacy and safety of dextran microspheres as an embolic agent in different clinical scenarios.

    Main Methods:

    • Canine kidneys were embolized with dextran microspheres (40-150 and 100-300 microns).
    • Radiologic and pathologic assessments were performed at multiple time points post-embolization (30 minutes to 6 weeks).
    • Clinical application in ten patients for various conditions including epistaxis, tumors, and arteriovenous malformations.

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    Main Results:

    • Small quantities of dextran microspheres caused dramatic vascular occlusions.
    • Particles reached more distally and were easier to embolize than other agents.
    • The technique proved safe and effective in clinical cases, with no major adverse events reported.

    Conclusions:

    • Dextran microspheres are effective embolic agents, capable of achieving distal occlusion with ease.
    • Caution is advised due to their ease of embolization; proper dilution and gentle technique are critical.
    • The procedure is safe and effective for various embolization indications when performed with careful monitoring.