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Washington University Experience | MISCELLANEOUS | Idiopathic Hypertrophic Pachymeningitis (IgG4 Disease) | 4A7 IgG4-Related Hypertrophic Pachymeningitis (AANP 2012 Case 8) H&E 20X 2

Special stains performed on this material and reported at the AANP DSS in 2012 showed an IgG4 count of 80 plasma cells/HPF and an IgG4/IgG ratio of 15%. (AANP Diagnostic Slide Session 2012, Case 8)

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