Intracranial epidermoid cyst

Case contributed by Dr Ammar Haouimi


Headaches with cranial nerve deficits.

Patient Data

Age: 30 years
Gender: Female

The MRI sequences demonstrate an ill-defined lobulated extra-axial cystic mass, filling the prepontine and interpeduncular cisterns with upwards extension to the floor of the 3rd ventricle with mass effect on the midbrain. The mass encases the basilar artery as well the proximal segment of the posterior cerebral arteries. It appears isointense to the CSF on T1WI, T2WI, heterogeneous/dirty signal on FLAIR, and high signal on DWI (restricted diffusion). No enhancement was seen on the postcontrast sequence.

Case Discussion

MRI appearance characteristic of an epidermoid cyst.

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Case information

rID: 65853
Published: 27th Jan 2019
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included
Institution: Aurès Medical Imaging Center - Batna Algeria

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