Localized reactive angioendotheliomatosis

Area of Science:

• Dermatology
• Vascular Medicine
• Rheumatology

Background:

• Antiphospholipid syndrome and reactive angioendotheliomatosis (RAE) are characterized by specific clinical and histological findings.
• Understanding the pathogenesis of these conditions is crucial for diagnosis and management.

Observation:

• A patient presented with multiple painful dermal lesions on the left upper quadrant.
• Histological examination showed microvascular thrombosis with capillary-wall proliferation.

Findings:

• High anticardiolipin IgG antibodies and left subclavian stenosis were identified.
• These factors likely contributed to reduced blood flow, hypoxia, and microthromboses in a thrombophilic state.

Implications:

• This case represents a unique variant of reactive angioendotheliomatosis.
• It highlights the complex interplay between vascular stenosis, thrombophilia, and dermatological manifestations.