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Lateral pontine syndrome | |
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Classification and external resources | |
Template:Px Pons | |
ICD-10 | G463 |
A lateral pontine syndrome is a lesion which is similar to the Lateral medullary syndrome, but because it occurs in the pons, it also involves the cranial nerve nuclei of the pons.
Causes[]
It can be caused by an interruption to the blood supply of the anterior inferior cerebellar artery.
Symptoms[]
Damage to the following areas produces symptoms (from medial to lateral):
Structure affected | Effect |
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Lateral spinothalamic tract | Contralateral loss of pain and temperature from the trunk and extremities. |
Facial nucleus & facial Nerve (CN.VII) | (1) Ipsilateral paralysis of the upper and lower face (lower motor neuron lesion). (2) Ipsilateral loss of lacrimation and reduced salivation. (3) Ipsilateral loss of taste from the anterior two-thirds of the tongue. (4) Loss of corneal relfex (efferent limb). |
Spinal trigeminal nucleus and tract | Ipsilateral loss of pain and temperature sensation from the face (facial hemianesthesia) |
Vestibular Nuclei and intraaxial nerve fibers | Nystagmus, nausea, vomiting, and vertigo |
Cochlear nuclei and intraxial nerve fibers | Hearing loss - ipsilateral central deafness |
Middle & inferior cerebellar peduncle | Ipsilateral limb and gait ataxia |
Descending sympathetic tract | Ipsilateral Horner's syndrome (ptosis, miosis, & anhydrosis) |
External links[]
- http://isc.temple.edu/neuroanatomy/lab/lesions/18.htm - inferior
- http://isc.temple.edu/neuroanatomy/lab/lesions/20.htm - mid
- http://isc.temple.edu/neuroanatomy/lab/lesions/22.htm - superior
CNS disease, Vascular disease: Cerebrovascular diseases (G45–G46 and I60–I69, 430–438) | |||||||||
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Brain ischemia/ cerebral infarction (ischemic stroke/TIA) |
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Intracranial hemorrhage (hemorrhagic stroke) |
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Aneurysm |
Cerebral aneurysm (Intracranial berry aneurysm, Charcot-Bouchard aneurysm) | ||||||||
Other/general |
Cerebral vasculitis | ||||||||
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Lesions of spinal cord and brain | |||||||||||
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Spinal cord/vascular myelopathy |
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Brainstem |
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Cerebellum |
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Basal ganglia | |||||||||||
Cortex |
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Thalamus | |||||||||||
Other |
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