Ruptured intracranial dermoid cyst

Case contributed by Dr Erik Ranschaert

Presentation

Sudden and brief loss of consciousness followed by headache.

Patient Data

Age: 85 years
Gender: Male
MRI

MRI brain

Lipid-containing (and therefore strongly T1 and T2 (FLAIR) hyperintense ) material is floating on CSF in the anterior horns of the lateral ventricles. Multiple small droplets of T1 hyperintense lipid material can be seen in the subarachnoid space of both hemispheres. The originating (ruptured) cyst difficult to identify but is most probably located in the right parasellar area. There is no convincing solid enhancing component, although fat saturated sequence would be of benefit. 

MRI

Annotated Images

High T1 signal material is floating on CSF in the anterior horns of the lateral ventricles (blue arrows), and multiple small droplets of T1 hyperintense material can be seen in the subarachnoid space of both hemispheres (yellow arrows). 

An area of encephalomalacia (yellow dotted line) is consistent with an old left MCA territory infarct.

Case Discussion

This case illustrates typical appearances of a ruptured intracranial dermoid cyst. 

PlayAdd to Share

Case information

rID: 12372
Case created: 16th Nov 2010
Last edited: 6th Oct 2015
Tag: dermoid
Inclusion in quiz mode: Included

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.