Natural killer/T-cell lymphoma with intracranial infiltration and Epstein-Barr virus infection: A case report

Figure 1 Imaging examinations. A: Eyelid computed tomography (CT) at admission. A soft tissue mass in the right lateral eyelid muscle was noted; B: CT scan of the head after surgery. The lesion range had increased, involving the temporal lobe; C: Enhanced magnetic resonance imaging (MRI) of the eyelid after the first chemotherapy. The right eyelid and its surrounding space-occupying lesion as well as abnormal signal in the right temporal lobe were visible; D: Brain enhanced MRI after treatment. The original lesion was significantly reduced and disappeared.

Figure 2 Pathological outcomes. A: Hematoxylin and eosin staining showing necrosis in the tissue, and atypical lymphocytes infiltrated between the glands; B-F: Immunohistochemical staining showing (B) a Ki-67 index of 80%, (C) CD3+, (D) CD56+, (E) CD20-, and (F) EBER+. Original magnification for all images: 10 × 20. HE: Hematoxylin and eosin.