Idiopathic non-necrotizing eosinophilic vasculitis limited to the lung: Part of a complex spectrum

The hallmark of this proposed new entity is the concomitant presence of blood and tissue eosinophilia together with histologic and clinical features of necrotizing vasculitis. [...]our patient had lung nodules, alveolar hemorrhage, and abundant pleural effusion, which are uncommon in EGPA.3 Moreover, histopathologic features corresponded to non-necrotizing EoV1 and differed from EGPA even lung-limited.2 Differentiating EoV from EGPA may be challenging, however, because the 3 histologic cardinal features of EGPA may not be found in the same tissue sample,4 and ANCAs are only found in