Presentation
Headaches.
Patient Data
Age: 25 years
Gender: Female
From the case:
Quadrigeminal cistern lipoma
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Small well defined lesion in the left paramedian region of the quadrigeminal cistern. It elicits a high signal on both T1 and T2, attenuated on fat sat sequences with blooming artifact on GE. No enhancement is seen on postcontrast sequences. A mild extension into the lower aspect of the aqueduct of Sylvius is noted with mild dilatation of the 3rd and lateral ventricles (hydrocephalus).
Case Discussion
MRI features characteristic of a quadrigeminal cistern lipoma obstructing the aqueduct of Sylvius with mild hydrocephalus.
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