Intrinsic Abnormality of Spinal Cord Signal (RSNA 2019)

Question 1

Main demyelinating diseases of the spine

Answer 1

Multiple sclerosis
Acute disseminated encephalomyelitis
Neuromyelitis optica spectrum disorder
Idiopathic transverse myelitis

Question 2

Most common demyelinating disease of the spine

Answer 2

Multiple sclerosis

Question 3

Pattern of lesion in MS

Answer 3

Short (< 1.5 vertebral body segment)
Peripheral
Wedge-shaped or round
Affects less than half of the cord

Question 4

What’s the percentage of patients with MS that presents with only spinal lesions?

Answer 4

20%

Question 5

What’s the percentage of patients with MS that presents with spinal lesions?

Answer 5

> 90%

Question 6

What portion of the spine is most affected in MS?

Answer 6

Cervical spine

Question 7

What portion of the spine is most affected in ADEM?

Answer 7

Thoracic

Question 8

Pattern of lesion in ADEM

Answer 8

Poorly marginated (owing to edema)
Larger in cross-sectional area
Longer in craniocaudal extent
Mild cord expansion

Question 9

Pattern of lesion in NMOSD

Answer 9

Longer in craniocaudal extent (>3 vertebral bodies)

Very bright T2 hyperintensity

Question 10

Mean age of astrocytoma of the spine

Answer 10

29 years old (young males)

Question 11

Disease associated with astrocytoma of the spine

Answer 11

NF1

Question 12

Disease associated with ependymoma of the spine

Answer 12

NF2

Question 13

What’s the most common glial tumor of the spine in adults?

Answer 13

Ependymoma