Postgranulomatous anetoderma associated with Takayasu's arteritis in a child

Area of Science:

• Rheumatology and Dermatology

Background:

• Takayasu's arteritis (TA) is a rare inflammatory arteriopathy impacting the aorta and its branches.
• Skin manifestations are common in TA, with pyoderma gangrenosum and leg lesions being most frequent.

Observation:

• A case study of a boy with TA revealed a trunk papular rash appearing years before vascular symptoms.
• Histological examination showed superficial middermal noncaseating tuberculoid granulomas in the skin lesions.
• Granulomas were present in synovial tissue, but temporal artery biopsy showed only intimal hyperplasia.

Findings:

• The skin lesions progressed to atrophy and anetoderma due to elastic network disruption.
• The findings suggest a potential link between vascular and skin manifestations in TA.

Implications:

• This case suggests a common granulomatous hypersensitivity process may underlie both vascular and skin lesions in Takayasu's arteritis.
• Understanding this link could improve diagnosis and management of TA patients with diverse symptoms.