Bronchocentric granulomatosis with glomerulonephritis.

Area of Science:

• Pulmonology
• Nephrology
• Pathology

Background:

• Bronchocentric granulomatosis is a chronic pulmonary condition typically treated with corticosteroids, offering an excellent prognosis.
• Concurrent renal involvement, specifically glomerulonephritis, is rare but has been documented alongside bronchocentric granulomatosis.

Observation:

• This report details a patient with bronchocentric granulomatosis and glomerulonephritis.
• A review of existing literature identified an additional similar case.
• In both instances, a misdiagnosis of Wegener's granulomatosis was considered, potentially leading to cyclophosphamide therapy.

Findings:

• Bronchocentric granulomatosis can present with concurrent glomerulonephritis, mimicking other systemic vasculitides.
• Histopathologic evaluation is crucial for differentiating these conditions.

Implications:

• Accurate diagnosis through thorough histopathologic examination of lung biopsies is essential to avoid misclassifying bronchocentric granulomatosis with renal disease as Wegener's granulomatosis.
• Avoiding misdiagnosis prevents the unwarranted use of potent cytotoxic agents like cyclophosphamide, thereby improving patient outcomes and reducing treatment-related toxicity.