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Granulomatous vasculitis.

A V Marzano1, Y Balice, S Tavecchio

  • 1Operative Unit of Dermatology, Department of Transplantation, Medico-Surgical Physiopathology,University of Milan, Ca' Granda IRCCS Foundation, Ospedale Maggiore Policlinico, Milan, Italy - angelovalerio.marzano@policlinico.mi.it.

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Summary
This summary is machine-generated.

Granulomatosis with polyangiitis (GPA) and eosinophilic granulomatosis with polyangiitis (EGPA) are ANCA-associated vasculitides. Dermatologists play a key role in diagnosing these conditions, as skin manifestations are common and can be the initial sign.

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Area of Science:

  • Rheumatology
  • Dermatology
  • Immunology

Background:

  • Granulomatosis with polyangiitis (GPA) and eosinophilic granulomatosis with polyangiitis (EGPA) are systemic autoimmune diseases.
  • These conditions are classified as antineutrophilic cytoplasmic antibodies (ANCA)-associated vasculitides.
  • GPA presents in localized or diffuse forms, while EGPA follows a prodromic, eosinophilic, and vasculitic phase.

Purpose of the Study:

  • To highlight the clinical manifestations of GPA and EGPA.
  • To emphasize the significance of cutaneous involvement in these vasculitides.
  • To underscore the crucial role of dermatologists in early diagnosis.

Main Methods:

  • Review of clinical presentations of GPA and EGPA.
  • Analysis of common and specific dermatological findings.
  • Correlation of skin manifestations with disease diagnosis and progression.

Main Results:

  • Both GPA and EGPA exhibit diverse skin lesions, including purpura, livedo reticularis, papules, nodules, and ulcerative lesions.
  • Specific lesions like pyoderma gangrenosum-like ulcers (GPA) and erythema multiforme-like lesions (EGPA) are noted.
  • Oral involvement, such as strawberry gingivitis in GPA, can also occur.

Conclusions:

  • Cutaneous manifestations are frequent in GPA and EGPA and can be the presenting feature.
  • Early recognition of skin signs by dermatologists is vital for timely diagnosis of ANCA-associated vasculitides.
  • Multidisciplinary collaboration, particularly with dermatology, improves patient outcomes.