Choroid plexus xanthogranuloma

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Epilepsy. Incidental finding.

Patient Data

Age: 45 years
Gender: Male

Well-defined cystic-like lesions of the choroid plexus of the trigone bilaterally of CSF signal on both T1 and T2, not attenuated on FLAIR sequence with high signal on DWI, intermediate signal on ADC. No enhancement seen on postcontrast sequences.

Partially empty sella is noted.

Case Discussion

MRI features most consistent with bilateral choroid plexus xanthogranulomas (incidental finding).

Choroid plexus xanthogranulomata are common, asymptomatic and discovered incidentally. They represent desquamated epithelium into the lumen of choroid cysts within the choroid plexus. 

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