R. NICKBRYANMDS. JAMESZINREICHMD
Cholesterol granuloma cysts of the petrous apex are insidious lesions. These expanding cysts cause bone destruction and compression of the surrounding structures that lead to clinical symptoms. Diagnosis and management of cholesterol granuloma cysts can be challenging. Magnetic resonance imaging (MRI) and computed tomographic (CT) scans are usually diagnostic. In the present case, the cholesterol granuloma cyst involved both petrous apexes and eroded into the sphenoidal sinus.
Imaging Quiz Case 1. Arch Otolaryngol Head Neck Surg. 1998;124(1):110. doi:10.1001/archotol.124.1.108