Colloid cyst with ACOM aneurysm

Case contributed by Dr Amro Omar



Patient Data

Age: 40

CT shows small colloid cyst and old lacunar infarction with suspected ACOM aneurysm 


MRI confirmed the ACOM aneurysm and the colloid cyst. Again noted , the old lacuna infarction in the left anterior corona radiate with encephalomalacic change.

Case Discussion

  • It is important to exclude hydrocephalus in any case of colloid cyst.
  • In case of ACOM aneurysm rupture , subarachnoid hemorrhage will be highest in the anterior interhemispheric fissure
  • TOF MRA is 85-95% sensitive for aneurysms ≥ 3 mm
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Case information

rID: 33901
Case created: 28th Jan 2015
Last edited: 1st Oct 2015
Inclusion in quiz mode: Included

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