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Washington University Experience | MISCELLANEOUS | Idiopathic Hypertrophic Pachymeningitis (IgG4 Disease) | 2C2 IgG4-Related Hypertrophic Pachymeningitis (Case 2) A1 IgG4 3
Immunohistochemistry for IgG4 is prominent in numbers and intensity of plasma cells. (IgG4 IHC)