NHN

Question 1

Eg’s of extramedullary tumours?
[HINT MNM]

Answer 1

Meningiomas
Nerve Sheath tumours
Mets

Question 2

Causes of basilar invagination
[PF ROACH]

Answer 2

Pagets
Fibrous dysplasia
RA/Rickets
Osteogenesis imperfecta/Osteomalacia
Achondroplasia
Chiari I/II /Cleidocranial dysostosis
Hyperparathyroid

Question 3

Asymmetrical subcrotical deep white matter changes caused by Measles. Progressive and fatal.

Answer 3

Subacute sclerosing panencephalitis

Question 4

Low NAA / High choline

Answer 4

Tumour recurrence

Question 5

Myoclonus and dementia
Abnormal signal in thalamus, BG (Caudate and putamen) and cortex
Atrophy

Answer 5

CJD

Question 6

What causes SWI blooming on MRI?

Answer 6

Calc

Question 7

Hashimotos - reduced or increased uptake on pertechnetate?

Answer 7

Reduced

Question 8

Bilateral but asymmetrical WM changes with involvement of cerebral cortex, subcortical grey matter (especially thalami and brain stem - not very common but distinguishable from MS)
2 weeks post viral infection/vaccination
Treat with steroids

Answer 8

ADEM

Question 9

Do cholesteatomas restrict diffusion?
Do they enhance?

Answer 9

Yes restrict
Don’t enhance