A Case of Diffuse Leptomeningeal Glioneuronal Tumor Misdiagnosed as Chronic Tuberculous Meningitis without Brain Biopsy

Figure 2

Histopathologic examination of disseminated leptomeningeal glioneuronal tumor.

(a) Diffuse leptomeningeal dissemination of tumor cells without an intraparenchymal brain lesion (H & E, x 100)

(b) Monotonous oligodendrocyte-like or neurocyte-like tumor cells with round nuclei and clear cytoplasm (H & E, x 400)

(c) Positive immunohistochemical staining for Olig-2 (x200)

(d) Immunohistochemical staining for synaptophysin is positive (x 400)