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Complement abnormalities in diffuse plane xanthomatosis with paraproteinaemia.

R R Jones, A S Baughan, J J Cream

    The British Journal of Dermatology
    |December 1, 1979
    PubMed
    Summary
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    Benign monoclonal gammopathy can cause xanthomatous skin deposits even without high lipid levels. These cases highlight associated immune system abnormalities, including complement consumption and C1 esterase inhibitor deficiency.

    Area of Science:

    • Immunodermatology
    • Dermatopathology
    • Clinical Immunology

    Background:

    • Paraproteinemia, a condition involving abnormal proteins in the blood, can manifest with cutaneous xanthomatous deposits.
    • These xanthomatous deposits may occur independently of hyperlipidemia, challenging typical diagnostic associations.
    • Understanding the link between paraproteinemia and skin manifestations is crucial for comprehensive patient care.

    Observation:

    • Two cases of benign monoclonal gammopathy presented with diffuse plane xanthomatosis.
    • Case 1 demonstrated hypolipidemia and a functional deficiency of C1 esterase inhibitor.
    • Case 2 exhibited a normal lipoprotein profile, abnormal platelet aggregation, and cutaneous vasculitis with complement consumption.

    Findings:

    • Benign monoclonal gammopathy is associated with xanthomatous skin deposits, irrespective of lipid levels.

    Related Experiment Videos

  • Associated immune dysregulation, including complement pathway activation and C1 esterase inhibitor deficiency, can be present.
  • Cutaneous vasculitis and altered platelet function may coexist with these conditions.

    • Implications:

    • These findings suggest a broader spectrum of immune-related complications associated with paraproteinemia and xanthomatosis.
    • Further research into the pathomechanisms linking paraproteins, lipid metabolism, and immune responses is warranted.
    • Recognition of these associations can improve diagnostic accuracy and therapeutic strategies for patients with unusual skin manifestations.