Cavernoma - medial temporal
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In the right medial temporal lobe, an area of marked haemosiderin deposition is associated with 'blooming artefact'.
The lesion measures 7.8 x 9.3 by 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.
Right medial temporal cavernoma.
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 haemosiderin, which demonstrates prominent blooming on susceptibility weighted sequences.