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Oral lesions as the first clinical sign of microscopic polyangiitis: a case report
Caroline H Shiboski1, Joseph A Regezi, Henry C Sanchez
1Department of Stomatology, School of Dentistry, University Of California San Francisco, 94143-0422, USA. caro@itsa.ucsf.edu
Abstract:
Microscopic polyangiitis (MPA) is defined as a systemic necrotizing vasculitis that clinically and histologically affects small-sized vessels without granulomata. The main clinical feature of MPA is renal involvement characterized by rapidly progressing glomerulonephritis. We report a case of oral lesions, initially thought to be associated with Wegener's granulomatosis, as the first sign of MPA in an otherwise healthy man. To our knowledge, this is the first published case of MPA-associated oral lesions.
Insights
Microscopic polyangiitis (MPA), a small-vessel vasculitis, typically affects kidneys. This case highlights oral lesions as the initial presenting sign of MPA, a rare occurrence.
Area of Science:
- Rheumatology
- Nephrology
- Oral Medicine
Background:
- Microscopic polyangiitis (MPA) is a systemic necrotizing vasculitis affecting small blood vessels.
- MPA commonly presents with renal involvement, specifically rapidly progressing glomerulonephritis.
- Wegener's granulomatosis is a differential diagnosis for vasculitic conditions with oral manifestations.
Observation:
- A case study of an otherwise healthy male is presented.
- The patient exhibited oral lesions as the primary clinical manifestation.
- These oral lesions were initially misdiagnosed as potentially related to Wegener's granulomatosis.
Findings:
- The oral lesions were ultimately diagnosed as the initial presenting sign of microscopic polyangiitis (MPA).
- This represents the first reported instance of MPA presenting with oral lesions.
- The case underscores the diverse clinical spectrum of MPA beyond typical renal involvement.
Implications:
- Highlights the importance of considering MPA in patients with unexplained oral lesions.
- Suggests that oral manifestations may precede or occur in the absence of overt renal disease in MPA.
- Broadens the diagnostic considerations for vasculitis, emphasizing the need for a comprehensive evaluation.
