Eosinophilic granulomatosis with polyangiitis can manifest lacrimal and salivary glands swelling by granulomatous inflammation: a potential mimicker of IgG4-related disease

We read the paper by Vaglio et al in your journal with great interest.1 They reported that patients with eosinophilic granulomatosis with polyangiitis (EGPA), previously known as Churg-Strauss syndrome, showed high serum IgG4 levels, correlating with disease activity and the extent of organ involvement.1 Since then, the association between EGPA and IgG4-related disease has been discussed by researchers.2–4 EGPA is one of the systemic vasculitis...