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Cutaneous polyarteritis nodosa.

A Bauzá1, Agustin España, M Idoate

  • 1Department of Dermatology, University Clinic of Navarra, School of Medicine, Pamplona, Spain.

The British Journal of Dermatology
|April 23, 2002
PubMed
Summary
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Cutaneous polyarteritis nodosa (PAN) presents with nodules and livedo reticularis, often favoring the lower limbs. While typically having a good prognosis, systemic evaluation is crucial due to potential arteritis in other organs.

Area of Science:

  • Dermatology
  • Rheumatology
  • Pathology

Background:

  • Classic polyarteritis nodosa (PAN) is a vasculitis affecting small- and medium-sized arteries.
  • A cutaneous variant of PAN, with a more favorable prognosis and no visceral involvement, was described in 1931.
  • This study reviews four cases of cutaneous PAN diagnosed between 1987 and 1998.

Observation:

  • The study group included three women and one child, aged 11 to 70 years.
  • Nodules were the most frequent cutaneous lesions, primarily on the lower limbs.
  • The erythrocyte sedimentation rate was the sole consistently altered laboratory parameter.

Findings:

  • Histological analysis revealed segmentary leucocytoclastic vasculitis in the deep dermis and/or hypodermis.
  • Direct immunofluorescence was positive in only one patient.

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  • No evidence of visceral involvement was detected in any of the four patients.

    • Implications:

    • There is diagnostic ambiguity surrounding cutaneous PAN.
    • Clinical signs like nodules and livedo reticularis suggest a good prognosis.
    • Despite cutaneous presentation, thorough evaluation for systemic involvement is recommended due to the 'polyarteritis' nature of the condition.