PMC5820880_01
Magnetic resonance imaging T1-weighted post contrast images of dorsal spine coronal (a) images reveal an intradural well defined ovoid lesion along D6 to D8 spine (red block arrows). There is homogenous postcontrast enhancement with hyper enhancing rim. Magnetic resonance imaging T1-weighted postcontrast images of dorsal spine sagittal (b) images reveal an intradural well defined ovoid lesion along D6 to D8 spine (red block arrows). There is homogenous post contrast enhancement with hyper enhancing rim
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F1
Magnetic resonance imaging (MRI) of the spine showed intradural extramedullary (IDEM) lesion at D6-D8 level suggestive of a benign nerve sheath tumor [Figure 1].
(a) Photomicrograph hematoxylin and eosin stain (x10), showing tumor composed of sheets of spherical, ovoid to spindle shaped cells. (b) xanthoma cells (x40) (blue block arrow). (c) Touton giant cells (x40) (red block arrow)
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F2
Many Touton giant cells were seen [Figure 2].
(a) Photomicrograph showing tumor cells positive for CD68 (cytoplasmic stain x10) and with inset, x40. (b) Photomicrograph showing tumor cells positive for CD 163 (membrane stain x10) and with inset, x40
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F3
CD68 (histiocytic marker) and weakly for CD163 [Figure 3]. Cells were negative for s100 protein, CD1a, glial fibrillary acidic protein, epithelial membrane antigen.