Challenge #11 (part 2)
Look at the scans below and answer the multiple choice questions.
1. What accounts for the signal intensity characteristics of cholesterol granuloma?
a) Cholesterol
b) Granuloma
c) Epidermoid tissue
d) Hemorrhage
e) All of the above
f) None of the above
2. What percentage of petrous apices are pneumatized (allowing the potential for cholesterol granulomas)?
a) 0-20%
b) 21-40%
c) 41-60%
d) 61-80%
e) > 80%
3. Which of the following may simulate a petrous apex cholesterol granuloma?
a) Epidermoid
b) Mucocele
c) Thrombosed petrous ICA aneurysm
d) None of the above
e) All of the above
Be sure to submit your answers for a chance to win a special prize!
