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Washington University Experience | NEOPLASMS (NEURONAL) | Paraganglioma - Cauda Equina Neuroendocrine Tumor | 1G2 Paraganglioma, gangliocytic (Case 1) GFAP 20X
Reactivity for GFAP is noted in only rare tumor cells and perivascular collections; the vast majority of tumor cells are negative. ---- Ancillary findings: EMA and D2-40 are negative. ---- Comment: These histomorphological and immunohistochemical findings are most consistent with gangliocytic paraganglioma, WHO grade I. Ganglionic differentiation to one degree or another appears in approximately half of cauda equina region paragangliomas.
