Challenge #26 (part 2)
Look and the scans below and answer the multiple choice questions.
![](https://static.wixstatic.com/media/bcdc3a_4a78f108459e477b92cb7d22b03d17ec.jpg/v1/fill/w_591,h_680,al_c,q_85,enc_auto/bcdc3a_4a78f108459e477b92cb7d22b03d17ec.jpg)
![](https://static.wixstatic.com/media/bcdc3a_d5c5f91fbe5043958c428097ff6d1765.jpg/v1/fill/w_591,h_680,al_c,q_85,enc_auto/bcdc3a_d5c5f91fbe5043958c428097ff6d1765.jpg)
![](https://static.wixstatic.com/media/bcdc3a_6d66262da4a74c6ba6a0ac70ac1b0e8d.jpg/v1/fill/w_591,h_680,al_c,q_85,enc_auto/bcdc3a_6d66262da4a74c6ba6a0ac70ac1b0e8d.jpg)
1. Given the posterior fossa abnormalities, what might be the source of the multiple meningiomas?
a) Cowden syndrome
b) Whole brain radiation for medulloblastoma
c) NF-2
d) NF-1
e) None of the above
2. The rate of subarachnoid seeding of medulloblastoma is?
a) 0-20%
b) 21-40%
c) 41-60%
d) > 60%
e) All of the above
3. The ADC value of a meningioma varies with:
a) Grade
b) Consistency
c) Enhancement
d) Location
e) None of the above
Be sure to submit your answers for a chance to win a special prize!