Lesions Flashcards
a lesion to CN 3 in brainstem causes what
occulomotor palsy
a lesion to medial lemniscus in brainstem causes what
contralateral loss of proprioception and vibration
a lesion to red nucleus in brainstem causes what
involuntary movements e.g. tremor and ataxia
a lesion to corticospinal trunk in brainstem causes what
contralateral hemiparesis
a lesion to corticobulbar tract in brainstem causes what
pseudobulbar palsy
UMN CN motor weakness, exaggerated gag reflex, tongue spasticity, and spastic dysarthria indicate what
pseudobulbar palsy
oculomotor palsy, contralateral loss of proprioception/ vibration, and involuntary movements indicate what syndrome
benedikt syndrome
pseudobulbar palsy, contralateral hemiparesis, and occulomotor palsy indicate which syndrome
weber syndrome
a lesion to the superior colliculus and pretectal area in the brainstem cause what
vertical gaze palsy (cant look up)
vertical gaze palsy and pseudo-roberton pupil cause what syndrome
parinaud syndrome
- often d/t pinealoma or granuloma of pineal region
- watch for cerebral aqueduct obstruction
a lesion to the vestibular nucleus in the pons causes what
n/v, vertigo, nystagmus
a lesion to the facial nerve in the pons causes what
ipsilateral facial droop, loss of corneal reflex
a lesion to the medial lemniscus in the pons causes what
loss of proprioception and vibration
a lesion to the corticospinal tract in the pons causes what
contralateral hemiparesis
a lesion to the abducens nerve in the pons causes what
problems moving eyeball laterally
a lesion to the spinothalamic tract in the pons causes what
contralateral loss of pain and temp sensation
a lesion to the trigeminal nucleus and nerve in the pons causes what
loss of pain and temp sensation in the face
a lesion to the medial longitudinal fasiculus (MLF) in the pons causes what
internuclear ophthalmoplegia (impaired adduction of ipsilateral eye, nystagmus of contralateral eye with abduction)
a lesion to the paramedian pontine reticular formation in the pons causes what
ipsilateral lateral gaze impairment
structures: PPRF, abducens nucleus, MLF
a lesion to the spinal trigeminal nucleus in the pons causes what
ipsilateral loss of pain and temp sensation
a lesion to the sympathetic tracts of the pons causes what
horners syndrome
- PAM is HORNy
ptosis, anhydrosis, miosis
a lesion to the facial nucleus of the pons causes what
ipsilateral facial droop, loss or corneal reflex
a lesion to the cochlear nucleus in the pons causes what
deafness
contralateral hemiparesis, CN 6 palsy, and ipsilateral facial weakness and droop indicate what syndrome
medial pontine syndrome
n/v, nystagmus, vertigo, loss of contralateral pain and temp sensation, loss of ipsilateral facial pain and temp sensation, ipsilateral facial droop and loss of corneal reflex, horner syndrome, and deafness all indicate what
lateral pontine syndrome
- can be caused by AICA stroke
a lesion to the corticospinal tract in the medulla causes what
contralateral hemiparesis
a lesion to the medial lemniscus in the medulla causes what
contralateral loss of proprioception and vibration
a lesion to CN 12 in the medulla causes what
flaccid paralysis of tongue, ipsilateral tongue deviation
a lesion to the vestibular nucleus in the medulla causes what
n/v, vertigo, nystagmus
a lesion to the sympathetic tract in the medulla causes what
horners syndrome
- PAM is HORNy
ptosis, anhydrosis, miosis
a lesion to the spinothalamic tract in the medulla causes what
contralateral loss of pain and temp sensation
a lesion to the nucleus ambiguus in the medulla causes what
hoarseness and dysphagia
- differentiates lateral medullary syndrome vs lateral pontine syndrome
contralateral hemiparesis, contralateral loss of proprioception and vibration, and flaccid paralysis of the tongue with ipsilateral deviation indicates what syndrome
medial medullary syndrome
- can be caused by anterior spinal a stroke
n/v, vertigo, nystagmus, horners syndrome, contralateral loss of pain and temp sensation, hoarseness and dysphagia indicate what syndrome
lateral medullary syndrome (wallenbergs syndrome)
- can be caused by PICA stroke
AICA infarct can cause what
lateral pontine syndrome
PICA infarct can cause what
lateral medullary syndrome
anterior spinal artery infarct can cause what
medial medullary syndrome
