brainstem syndromes

Question 1

what is weber syndrome?

Answer 1

MEDIAL/ANTERIOR midbrain lesion

corticospinal tract = contra hemiparesis

CN III fascicle = ipsi 3NP

Question 2

what is claude syndrome?

Answer 2

POSTERIOR midbrain tegmentum

red nucleus/superior cerebellar peduncle fibers = contra ataxia

Question 3

what is foville syndrome?

Answer 3

medial pons

uncrossed corticospinal = contra hemiparesis

crossed corticobulbar = ipsi facial weakness

CN VI nucleus = ipsi gaze

Question 4

what is benedikt syndrome?

Answer 4

midbrain tegmentum (anterior and posterior)

corticospinal = contra hemiparesis

CN III fascicle = ipsi 3NP

red nucleus/SN? = contra involuntary movements/choreoathetosis, ataxia, tremor

Question 5

what is facial colliculus syndrome?

Answer 5

posterior pons

CN VII fascicle = ipsi LMN facial weakness

Question 5

what is lateral medullary syndrome (Wallenburg)?

Answer 5

anterolateral = contra loss of pain and temp

spinal trigem nucleus and tract = ipsi loss of face pain and temp

nu cleus ambiguus = dysphagia

nucleus solitarius = ipsi taste loss

vestibular nuclei = dizziness/vertigo

inferior cerebellar peduncle = ipsi ataxia

descending sympathetic fibers = ipsi Horner syndrome (ptosis, myosis, anhidrosis)

Question 6

what is medial medullary syndrome?

Answer 6

corticospinal = contra hemiparesis

medial lemniscus = contra loss of vibration and proprioception