Petrous apex cholesteatoma

Case contributed by Dr Mohammad A. ElBeialy

Presentation

Right sided SNHL, headache and tinnitus.

Patient Data

Age: 40 years
Gender: Male
Modality: MRI

A right petrous apex well-defined lobulated border S.O. lesion is seen. It measures 3.2 X 1.8 X 1.9 cm in its main axial and CC diameters respectively. The lesion shows hypointense T1 and bright T2 signal with incomplete nullification of its signal in the FLAIR sequence. The lesion is hyperintense in DWI series. It is slightly hypointense to isointense to the brain in ADC map. The lesion shows no significant post-contrast enhancement but for subtle / if any marginal enhancement. The lesion is seen mildly compressing the right internal auditory canal the right facial and vestibule-cochlear nerves as well as the right cerebello-pontine angle and abutting the right inferior temporal lobe.

Case Discussion

Right petrous apex mass lesion - which most likely represents a petrous apex cholesteatoma.

A cholesteatoma will not usually attunuate on FLAIR imaging, however partial attenuation, as seen here, is not uncommon.

PlayAdd to Share

Case Information

rID: 23471
Case created: 18th Jun 2013
Last edited: 14th Mar 2016
System: Head & Neck
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.