PMC5961282_01
Axial CT scan showing a hyper-attenuating lesion centered by an hypodensity of the posterior fossa
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F1
Mild surrounding edema and mass effect on the fourth ventricle was associated provoking a triventricular hydrocephalus [Figure 1].
MRI on axial T1 weighted image revealing an hypointense and heterogeneous contrast enhancement of the solid component of the dermoid cyst
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F2
On MRI, the lesion appeared hypointense on T1-weighted images and extremely hypointense on T2-weighted images with a hyperintense central area on T1 and T2 without enhancement after injection of gadolinium [Figures 2-4].
MRI on axial T2 weighted images showing a hypointense signal of the dermoid cyst
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F3
On MRI, the lesion appeared hypointense on T1-weighted images and extremely hypointense on T2-weighted images with a hyperintense central area on T1 and T2 without enhancement after injection of gadolinium [Figures 2-4].
MRI on Sagittal T2 weighted images showing a hypointense signal of the lesion
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F4
On MRI, the lesion appeared hypointense on T1-weighted images and extremely hypointense on T2-weighted images with a hyperintense central area on T1 and T2 without enhancement after injection of gadolinium [Figures 2-4].
Histopathological examination of the surgical specimen revealing a stratified squamous epithelium with fatty cellular debris, few hair follicles and scattered sebaceous glands consistent with the diagnosis of dermoid cyst
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F5
Histopathologic examination [Figure 5] revealed a stratified squamous epithelium with fatty cellular debris, few hair follicles, and scattered sebaceous glands.