Objective: We present the unique case of well defined, thick walled cholesterol granuloma of the mastoid tip associated with bone destruction in the presence of an aberrant sigmoid sinus. We also review the world literature concerning the rare phenomenon of aggressive cholesterol granulomas and even rarer aberrant sigmoid sinus.
Method: Case reports and a review of the world literature concerning cholesterol granulomas and sigmoid sinus anatomy are presented.
Results: The patient presented is a 32 year old male Caucasian who presented to our services complaining of otalgia. An MRI scan was performed and the patient underwent mastoidectomy.