Presentation
Seizures.
Patient Data
In the right medial temporal lobe, an area of marked hemosiderin deposition is associated with 'blooming artifact'.
The lesion measures 7.8 x 9.3 x 8.3 mm.
The imaging features remain entirely consistent with an incidental cavernoma.
There has been no change in the hippocampal formation, with a small hippocampal fissure remnant cyst (not shown).
Targeted post contrast imaging reveals no evidence of associated developmental venous anomaly, although there is marked focal enhancement seen centrally.
IMPRESSION:
Right medial temporal cavernoma.
Case Discussion
Cerebral cavernous venous malformations are common cerebral vascular malformations, usually with characteristic appearances on MRI, like on this case: characteristic “popcorn” or "berry" appearance with a rim of signal loss due to hemosiderin, which demonstrates prominent blooming on susceptibility weighted sequences.
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