Table 4: IgG4-positive plasma-cell-rich ANCA-related vasculitis.

Pt. no.Age/genderDiagnosisPC infiltrationIgG4/hpfIgG4/CD138 ratio (%)

175/FCSS++1947
259/MmPA++2252
379/FmPA+++3478
467/FRLV++1969

Abbreviations: CSS: Churg-Strauss syndrome; hpf: high-power field; mPA: microscopic polyangiitis; PC: plasma cell; RLV: renal limited vasculitis.