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Washington University Experience | MISCELLANEOUS | Idiopathic Hypertrophic Pachymeningitis (IgG4 Disease) | 2A6 IgG4-Related Hypertrophic Pachymeningitis (Case 2) H&E 1

2A6-8 Thickened fibrous tissue in these images represents reactive collagen deposition, often storiform, as part of the inflammatory process (H&E)-

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