PMC5869603_01
T2 (left) and T1-gadolinium (right) MRI showing a cervical intramedullary tumor.
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F1
The tumor was isointense on T1WI and T1-gadolinium showed annular enhancement of the lesion (Fig. 1).
Histopathological study showed a schwannoma with biphasic components (hypercellular and hypocellular areas) (a). Immunohistochemical studies showed strong reactivity for S-100 Protein (b). Glial Fibrillary Acidic Protein (GFAP), Epithelial Membrane Antigen (EMA) and Progesterone Receptors (PR) were negative (c). A low rate proliferative index was demonstrated by Ki-67 expression (d).
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F2
Acidic Protein (GFAP), Epithelial Membrane Antigen (EMA), Progesterone Receptors (PR), and Ki-67 were tested. Altogether, these findings confirmed schwannoma and excluded glioma and meningioma (Fig. 2).
Postoperative T1-gadolinium MRI showing removal of IS.
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F3
The postoperative MRI showed complete removal of the tumor (Fig. 3).