15/16 Spinal Cord & Brainstem Lesion

Question 1

dorsal root lesion

Answer 1

diminished sensation/reflex from that dermatome

Question 2

fasciculus gracilis lesion

Answer 2

ipsi loss of proprioception/ 2- pt lower limb

Question 3

fasciculus cuneatus lesion

Answer 3

ipsi loss of proprioception/ 2- pt upper limb

Question 4

LCST lesion

Answer 4

ipsi spastic paralysis

Question 5

LSTT (lateral spinothalamic tract) lesion

Answer 5

contralat loss of pain/temp 2 dermatomes below lesion

Question 6

LRST ( lateral reticulospinal tract) lesion

Answer 6

autonomic fxn loss

Question 7

anterior white commissure lesion

Answer 7

bilateral pain/temp anesthesia

pic = syringomyelia

same symp in central cord syndrome

Question 8

anterior horn lesion

Answer 8

ipsi LMN paralysis

Question 9

ALS lesion (spinal cord)

Answer 9

LMN/UMN paralysis

(presents 2 segments below lesion)

Question 10

what is the representation of spinal shock

Answer 10

Question 11

brown-sequard syndrome

Answer 11

Question 12

CST brainstem lesion

Answer 12

Question 13

medial lemniscus lesion

Answer 13

Question 14

spinal lemniscus lesion

Answer 14

Question 15

CST lesion at medulla @ olive

Answer 15

contralat

spastic hemiplegia

Question 16

medial lemniscus lesion at medulla @ olive

Answer 16

contralat

loss of proprio/2 point hemianesthesia

Question 17

spinal lemniscus lesion at medulla at olive

Answer 17

contralat

hemianalgesia (body)

Question 18

descending tract of V lesion at medulla at olive

Answer 18

ipsilat

hemianalgesia face

Question 19

vestibular nuclei at medulla @ olive

Answer 19

ipsilat

vestibular sign

(nystagmus, vertigo, nausea, etc)

Question 20

inferior cerebellar peduncle lesion at medulla @ olive

Answer 20

ipsilat

cerebellar signs

(+ Romberg, ataxia, dysmetria, etc)

Question 21

wallenberg syndrome

Answer 21

lateral medullary syndrome

= involves descending tract of CN V & spinal lemniscus

alternating hemianalgesia

-dysphonia, dysphagia

Question 22

lesion of

lateral lemniscus,

inferior colliculus,

brachium of the inferior colliculus

&/or medial genigulate body..

Answer 22

bilateral diminution of hearing w/ a more prominent hearing loss in the contralat ear

Question 23

internuclear ophthalmoplegia =

Answer 23

• horizontal gaze = normal

but not able to ADduct side of lesion

& nystagmus in opposite eye

Question 24

left homonymous heminopia =

Answer 24

contralat

=lesion of lateral geniculate body (optic tract), optic radiation or visual cortex