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.