PMC5402329_01
Preoperative magnetic resonance image in axial, coronal, and sagittal view showing a lesion with fluid collection, measuring 1.5 x 3.5 cm. localized in the right cerebellar hemisphere (a-c)
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F1
The initial brain computerized tomography (CT) scan and the subsequent magnetic resonance imaging (MRI) showed a lesion with fluid collection, measuring 1.5 x 3.5 cm in the right cerebellar hemisphere [Figure 1].
After suboccipital craniotomy, the intraoperative visualization showed a subcortical colliquative necrosis (a and b). The wall of the lesion was resected (c) and the fluid collection was completely free-hand evacuated (d)
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F2
A right suboccipital craniotomy was performed, the fluid collection was free-hand evacuated, and the wall of the lesion was resected [Figure 2].
Imaging in hematoxylin and eosin and original magnification x20 and x40 showed cerebellar necrosis associated with microparenchymal hemorrhage, leukocytoclastic vasculitis, and swollen endothelial cells (a and b). Immunohistochemistry imaging (CD 68 +) showed massive macrophages infiltration in the cerebellar parenchyma (c and d)
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F3
The histopathological diagnosis of the wall of the lesion deposed for ischemic necrosis caused by a vasculitis [Figure 3].
Postoperative magnetic resonance in axial, coronal, and sagittal view showing the complete resection of the lesion (a-c)
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F4
The post-operative MRI showed no residual lesions [Figure 4].