Presentation
Headache.
Patient Data
Age: 20 years
Gender: Male
From the case:
Quadrigeminal cistern lipoma
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A well-defined fat equivalent signal lesion is seen on the right side of the quadrigeminal cistern just posterior to the tectum/midbrain with a minimal mass effect that shows a signal drop on fat suppression sequences, in keeping with quadrigeminal lipoma.
Mild mucosal thickening is present in paranasal sinuses.
Case Discussion
MRI features are characteristic of a quadrigeminal cistern lipoma which is the second commonest site for intracranial lipomas after pericallosal lipoma.