Petrous Apex Cholesterol Granuloma

A petrous apex cholesterol granuloma is a tumor that occurs when serum from leaky capillaries within the petrous apex begins to accumulate and forms a cystic structure.

Complications for Petrous Apex Cholesterol Granuloma

As a petrous apex cholesterol granuloma continues to grow, it begins to erode and remodel the surrounding bones of the skull base.  Continued growth can also put pressure on the brain, trigeminal ganglion, facial nerve, and can extend into the inner ear.