Petrous Apex Cholesterol Granuloma


KEY FACTS

Terminology

  • Petrous apex (PA) cholesterol granuloma: Expansile PA lesion resulting from foreign-body giant cell reaction to deposition of cholesterol crystals in apical air cells with fibrosis and vascular proliferation

  • a.k.a. cholesterol cyst, "chocolate" cyst

You're Reading a Preview

Become a Clinical Tree membership for Full access and enjoy Unlimited articles

Become membership

If you are a member. Log in here