Ruptured intracranial dermoid cyst

Case contributed by Dr Ahmed Abdrabou


Acute onset of severe headache.

Patient Data

Age: 40 years
Gender: Male

The patient had a history of hydrocephalus and underwent a VP shunt insertion.

Complex right temporal intra-axial lesion. In T1 it displays heterogeneous intensity predominantly low signal in the center of the lesion with peripheral hyperintensity. In T2 the lesion is predominantly hyperintense in the center and periphery. The peripheral component becomes low signal in fat suppressed T2. Scattered foci of hyperintense signal in T1 and FLAIR are seen disseminated within the subarachnoid space.

Case Discussion

Diagnosis: dermoid cyst after rupture.

The dermoid cyst has ruptured and its fatty content becomes disseminated within the subarachnoid space resulting in T1/FLAIR hyperintense droplets. After evacuating its content, its center became hypointense on T1 and may resemble any other cystic lesions.

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Case information

rID: 22706
Published: 18th Apr 2013
Last edited: 24th Dec 2019
Tag: brain, cyst
Inclusion in quiz mode: Included

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