Pericallosal lipoma (curvilinear)

Case contributed by A.Prof Frank Gaillard

Presentation

Epilepsy

Patient Data

Age: 50
Gender: Female
Modality: MRI

The fat signal intensity lesion immediately anterior to the splenium of the corpus callosum is predominantly situated in the cistern of the velum interpositum. A thin linear element extends posteriorly and superiorly around the inferior aspect of the splenium of the corpus callosum. In fat saturated sequences its high signal is apparently completely eliminated. 

Postcontrast studies were performed. No pathological contrast enhancement was detected. No congenital developmental anomaly seen. No vascular anomaly, such as azygos anterior cerebral artery, detected.

Conclusion:

Virtually all the abnormal tissue within the cistern of the velum interpositum has the signal haracteristics of fat. It most likely is a lipoma, as dermoid would be expected to also contain non fat tissue elements.

 

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Case Information

rID: 28119
Case created: 10th Mar 2014
Last edited: 28th Oct 2015
Inclusion in quiz mode: Included

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