PMC6335883_01
Preoperative magnetic resonance imaging images. (a) T2-weighted axial, (b) T1-weighted axial, (c) Gd-enhanced T1-weighted axial. Images show contrast-enhancing lesion surrounded by a vasogenic edema with a little compress to fourth ventricular
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F1
A homogenous hyperintensity was also seen postcontrast without central necrosis [Figure 1].
Histopathologic findings. (a) A hematoxylin and eosin section shows a tumor tissue within cerebellar tissue, (b) a hematoxylin and eosin section shows Reed-Sternberg cells (arrows), eosinophils, plasma cells, histiocytes, and small lymphocytes, (c) immunostain shows immunoreactivity for CD30 marker
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F2
CD30 marker and were negative for CD20 and ALK-1 markers. CD3 and CD5 markers highlight the small background lymphocytes [Figure 2].
Follow-up magnetic resonance imaging 36 months after operation. (a) T2-weighted axial, (b) T1-weighted axial, (c) Gd-enhanced T1-weighted axial. Images show preoperative-enhanced mass is removed totally. There is no evidence of local recurrence, edema, or abnormal enhancement
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F3
The patient was followed regularly with routine physical and neurological examination, laboratory tests (complete blood count, erythrocyte sedimentation rate, and lactate dehydrogenase), MRI of the brain, and low-dose CT scan of the neck, chest, abdomen, and pelvis at 3, 6, 12, 24, and 36 months postoperatively [Figure 3].