PMC3228383_01
MRI of the neck with gadolineum. a) Sagittal T1 image illustrating an intramedullary enhancing mass from the cervicomedullary junction to C4. Leptomeningeal enhancement is also present. b) Axial T1 image illustrating the intramedullary mass and leptomeningeal enhancement. c) Axial image of cervical spine illustrating a dumbbell mass extending through C5-C6 neural foramen and paraspinal mass. d) Coronal T1 image illustrating intramedullary mass
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F1
HandE staining illustrating small round blue cells with high mitotic rate, atypical mitosis (red arrow), and pleomorphic nuclei (green bracket) characteristic of a primitive neuroectodermal tumor
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F2
The cells exhibited characteristic scanty cytoplasm, intense basophilic and pleomorphic nuclei, and atypical mitosis [Figure 2].
Immunohistomchemical staining. a) GFAP positive b) Synapthophysin positive, illustrating positivity around a binucleated cell (red arrow)
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F3
Immunohistochemical staining was positive for GFAP, CD99 and synaptophysin [Figure 3].