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.

Symptoms

Damage to the following areas produces symptoms (from medial to lateral):

Structure affected	Effect
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 reflex (efferent limb).
Principal sensory trigeminal nucleus and tract	Ipsilateral loss of all sensory modalities to the face (facial hemianesthesia)
Vestibular Nuclei and intraaxial nerve fibers	Nystagmus, nausea, vomiting, and vertigo
Cochlear nuclei and intraaxial 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)

Causes

It can be caused by an interruption to the blood supply of the anterior inferior cerebellar artery or circumferential arteries.^[1]

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Classification

Cerebrovascular diseases including stroke

Brain	Anterior cerebral artery syndrome Middle cerebral artery syndrome Posterior cerebral artery syndrome Amaurosis fugax Moyamoya disease Dejerine–Roussy syndrome Watershed stroke Lacunar stroke
Brain stem	Brainstem stroke syndrome Medulla Medial medullary syndrome Lateral medullary syndrome Pons Medial pontine syndrome / Foville's Lateral pontine syndrome / Millard-Gubler Midbrain Weber's syndrome Benedikt syndrome Claude's syndrome
Cerebellum	Cerebellar stroke syndrome
Extracranial arteries	Carotid artery stenosis precerebral Anterior spinal artery syndrome Vertebrobasilar insufficiency Subclavian steal syndrome
Classification	Brain ischemia Cerebral infarction Classification Transient ischemic attack Total anterior circulation infarct Partial anterior circulation infarct
Other	CADASIL Binswanger's disease Transient global amnesia

Extra-axial	Epidural Subdural Subarachnoid
Cerebral/Intra-axial	Intraventricular
Brainstem	Duret haemorrhages
General	Intracranial hemorrhage

Other

Signs and symptoms, and syndromes associated with lesions of the brain and brainstem

Cerebral cortex

Subcortex

Medulla	Lateral medullary syndrome/Wallenberg PICA Medial medullary syndrome/Dejerine ASA
Pons	Upper dorsal pontine syndrome/Raymond–Céstan syndrome Lateral pontine syndrome (AICA) (lateral) Medial pontine syndrome/Millard–Gubler syndrome/Foville's syndrome (basilar) Locked-in syndrome Internuclear ophthalmoplegia One and a half syndrome
Midbrain	Weber's syndrome ventral peduncle, PCA Benedikt syndrome ventral tegmentum, PCA Parinaud's syndrome dorsal, tumor Claude's syndrome
Other	Alternating hemiplegia

Other