PMC9541422_01
PMC9541422_02
Case 2: medulloblastoma of the fourth ventricle. Axial T1WI (A) and Axial T2WI (B) show a lobulated mass in the fourth ventricle with heterogeneously iso- to hypointense signal T1WI and iso- to hyperintense signal on T2WI. The lesion extrudes posteroinferiorly through the foramen of Magendie on sagittal T2WI (C). The lesion shows a moderate heterogeneous enhancement on postcontrast axial T1WI with fat saturation (D).
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PMC9541422_02_fneur-13-925883-g0001.jpg
F1
A 29 year old woman presented with a 3-month history of positional vertigo, provoked by rolling in bed to the left and right, which was mild (Figure 1).
PMC9541422_03
PMC9541422_04
PMC9541422_05
Cases 5: cerebellar hemangioblastomas. Axial T1WI (A), axial T2WI (B), and axial FLAIR (C) show a cyst mass in the cerebellar hemisphere and vermis with the marked hypointense signal on T1WI, the hyperintense signal on axial T2WI, and iso- and hypointense on FLAIR. The lesion shows septum and nodule enhancement on postcontrast axial T1WI with fat saturation (D).
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PMC9541422_05_fneur-13-925883-g0002.jpg
F2
A 53 year old man presented with more than 2 years history of dizziness which often occurred accompanied by top-heavy and unstable walking (Figure 2).
PMC9541422_06
Case 6: metastasis of the left cerebellar hemisphere. Axial T1WI (A) and Axial T2WI (B) show irregular lesion and surrounding edema in the left cerebellar hemisphere with the heterogeneously hypointense signal on T1WI and marked hyperintense signal on T2WI relative to the normal parenchyma of the cerebellum. The lesion shows ring-enhancement on postcontrast axial T1WI with fat saturation (C). Chest CT shows a soft tissue attenuation mass in the lower left lung (D).
fneur-13-925883-g0003.jpg
PMC9541422_06_fneur-13-925883-g0003.jpg
F3
A 39 year old man presented with a 1-week history of episodic vertigo which was provoked by changing the head position, accompanied by mild headache and nausea (Figure 3).