Ependymoma
Quiz
1. The most probable profile of an ependymoma patient would be:
- 1-2 years old, male
- 1-2 years old, female
- 3-4 years old, female
- 6-7 years old, female
2. The most frequent infratentorial location is/are:
- the lateral ventricles
- the midline ventricular floor
- the lateral ventricular floor
- the ependymal lining of lateral and 3rd ventricle
3. Ependymomas of supratentorial location
(2 correct answers):
- are of ependymal origin
- account for the majority of pediatric brain tumors
- commonly grow in the frontal lobe
- often occlude the 4th ventricle
4. Identify all of the following that are characteristic of ependymoma histology
(4 correct answers):
- perivascular pseudorosettes
- polygonal cells
- calcifications
- macroscopic heterogeneity
- neurofibrils
- GFAP-positive staining
5. A patient presenting with vomiting, nystagmus, and neck stiffness for 9
months prior to diagnosis would most likely have a tumor in the following location:
- the posterior fossa
- a focal area of the temporal lobe
- a supratentorial area
- the pons
6. Identify all of the following properties which are associated with a worse
prognosis
(2 correct answers):
- supratentorial location
- subarachnoid seeding
- age of less than 5 years
- radiation prescription greater than 4500cGY
- ependymyoblastoma histology
7. A recommended approach to radiation therapy for an ependymoma that has not
yet metastasized out of the posterior fossa would include:
- focal radiation; >5000cGy
- craniospinal irradiation; >5000cGy
- focal radiation; <5000cGy
- craniospinal irradiation; <5000cGy
8. Dosages used for local control are usually in the range of:
- 30-35Gy
- 45-50Gy
- 65-70Gy
- 20-25GY
