Conclusion
In patients with DAH and pulmonary capillaritis associated with cardiac pathologies with negative ANCAS serology, the diagnosis of ANCA-negative vasculitis should be considered, especially in MP or GP, when granulomatous inflammation of the upper and lower airways or pauci-immune necrotizing glomerulonephritis is present. However, when conditions such as peripheral eosinophilia, chronic rhinosinusitis, and asthma are present, it would point to an EGPA.