Case reports: Three patients—two with Wegener’s granulomatosis and one with an overlap syndrome of rheumatoid vasculitis, systemic lupus erythematosus, and antiphospholipid syndrome—are described. All patients experienced a sudden onset of Raynaud’s phenomenon or acrocyanosis when they had a flare of their disease.
Discussion: Ultrasonography (US) showed dark (hypoechoic) arteries without colour signals, resembling the US pattern of embolism. In contrast, US in patients with systemic sclerosis is entirely different, delineating a smaller artery lumen, reduced pulsation, and thickened, slightly hyperechoic artery walls.
- CCP, cyclic citrullinated peptide
- CRP, C reactive protein
- ESR, erythrocyte sedimentation rate
- MCP, metacarpophalangeal
- MTP, metatarsophalangeal
- PIP, proximal interphalangeal
- US, ultrasonography
- Wegener’s granulomatosis
- rheumatoid arthritis
- systemic sclerosis
- antiphospholipid syndrome
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Conflict of interest: None.
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