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Washington University Experience | NEOPLASMS - CRANIAL AND PARASPINAL NERVEs | Malignant Peripheral Nerve Sheath Tumor (MPNST) | 12D2 MPNST, triton tumor (Case 12) A3 Coll IV 2.jpg
By immunohistochemistry, a subset of tumor retains S100 (12D1) and collagen IV (12D2) expression consistent with a Schwannian contribution.