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Washington University Experience | MISCELLANEOUS | Idiopathic Hypertrophic Pachymeningitis (IgG4 Disease) | 1G2 Idiopathic Hypertrophic Pachymeningitis (hyper-IgG4, Case 1) dura ISH Kappa 1

Higher magnification image of the specimen seen in 1B1 stained for Kappa light chains using in-situ hybridization. The infiltrate shows substantial intensity and number of plasma cells (Kappa ISH).

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