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Bronchocentric injury in Wegener's granulomatosis: a report of five cases
1Department of Pathology, Presbyterian-University Hospital University of Pittsburgh School of Medicine, PA 15213.
Abstract:
While Wegener's granulomatosis is recognized primarily for its vascular destruction, the extravascular granuloma is an integral part of the inflammatory process. We report five illustrative cases of this phenomenon in which the necrotizing process appeared to be centered primarily on the airways. This was associated with multisystem disease and cavitary lung nodules, which probably resulted from extensive airway necrosis. Prognosis with conventional cytoxan and prednisone therapy was excellent. The differential diagnosis of bronchocentric Wegener's granulomatosis with bronchocentric granulomatosis, infection, and aspiration pneumonia is discussed.
Insights
Wegener's granulomatosis primarily affects blood vessels, but airway-centered granulomas can occur. Early diagnosis and treatment with prednisone and cyclophosphamide (Cytoxan) lead to excellent prognoses.
Area of Science:
- Pulmonology
- Rheumatology
- Pathology
Background:
- Wegener's granulomatosis classically involves vascular destruction.
- Extravascular granuloma formation is a key, yet often overlooked, component of the disease.
Purpose of the Study:
- To describe five cases of Wegener's granulomatosis with a primary airway necrotizing process.
- To highlight the association with multisystem disease and cavitary lung nodules.
- To discuss the differential diagnosis of this bronchocentric presentation.
Main Methods:
- Case series review.
- Clinical and pathological analysis of five patients with Wegener's granulomatosis.
- Review of treatment outcomes and differential diagnoses.
Main Results:
- Five cases demonstrated necrotizing processes centered on the airways.
- Patients presented with multisystem disease and cavitary lung nodules secondary to airway necrosis.
- Conventional therapy (cyclophosphamide and prednisone) resulted in excellent prognoses.
Conclusions:
- Bronchocentric Wegener's granulomatosis is a distinct presentation.
- Prompt diagnosis and treatment are crucial for favorable outcomes.
- Differential diagnosis should include bronchocentric granulomatosis, infections, and aspiration pneumonia.