PMC4602942_01
Preoperative MRI. (A) Axial T1-weighted image revealed a mass in the right cerebellum with hypointense. (B) Axial T2-weighted image revealed a mass in the right cerebellum with hyperintense. (C) and (D) Axial/sagittal T1-weighted image with gadolinium administration, revealing an enhanced solid part of the tumor. MRI = magnetic resonance imaging.
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F1
Magnetic resonance imaging (MRI) revealed a round cystic lesion with solid part in the right cerebellum (Figure 1). T1WI and hyperintense on T2WI (Figure 1A and B). The solid part was enhanced after gadolinium administration (Figure 1C and D).
Histological sample with hematoxylin and eosin stain showed a highly vascular tumor, containing abundant capillary vessels and stromal cells, intermingled with a rich population of red blood cells as well (400x).
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F2
Histological examination of the tumor specimen exposed a highly vascular tumor containing abundant capillary vessels and stromal cells intermingled with a large number of red blood cells that certified the occurrence of the intratumoral hemorrhage (Figure 2).
(A) Computed tomography scan without contrast administration presents low-density shadow on the operative region. (B) Axial T1-weighted MRI with contrast infusion revealed no enhanced lesions in the cerebellum. MRI = magnetic resonance imaging.
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F3
A computed tomography (CT) scan without contrast infusion was taken 1 day after the operation and presented a low-density shadow on the operative region (due to tumor resection) and no abnormal density lesions on other regions (Figure 3A). The MRI with contrast infusion revealed no enhanced lesions in the cerebellum (Figure 3B).