Benedikt syndrome - Misplaced Pages

(Redirected from Benedikt's syndrome) Medical condition

Benedikt syndrome
Other names	Paramedian midbrain syndrome
Specialty	Neurology

Benedikt syndrome, also called Benedikt's syndrome or paramedian midbrain syndrome, is a rare type of posterior circulation stroke of the brain, with a range of neurological symptoms affecting the midbrain, cerebellum and other related structures.

Signs and symptoms

This section is empty. You can help by adding to it. (July 2024)

Causes

Benedikt syndrome is caused by a lesion (infarction, hemorrhage, tumor, or tuberculosis) in the tegmentum of the midbrain and cerebellum. Specifically, the median zone is impaired. It can result from occlusion of the posterior cerebral artery or paramedian penetrating branches of the basilar artery.

Diagnosis

Oculomotor nerve palsy: eyeball gazing downward and outward position, diplopia, miosis, mydriasis, and loss of accommodation reflex.
Contralateral loss of proprioception and vibration sensations.
Cerebellar ataxia: involuntary movements.

Treatment

Deep brain stimulation may provide relief from some symptoms of Benedikt syndrome, particularly the tremors associated with the disorder.

References

Akdal G, Kutluk K, Men S, Yaka E (Jan 2005). "Benedikt and "plus-minus lid" syndromes arising from posterior cerebral artery branch occlusion". Journal of the Neurological Sciences. 228 (1): 105–107. doi:10.1016/j.jns.2004.09.029. PMID 15607218. S2CID 2317640.
AMA citation: Greenberg DA, Simon RP. Chapter 3. Disorders of Equilibrium. In: Greenberg DA, Simon RP, eds. Clinical Neurology. 7th ed. New York: McGraw-Hill; 2009. http://www.accessmedicine.com/content.aspx?aID=5146162. Accessed July 21, 2012
Bandt SK, Anderson D, Biller J (Oct 2008). "Deep brain stimulation as an effective treatment option for post-midbrain infarction-related tremor as it presents with Benedikt syndrome". Journal of Neurosurgery. 109 (4): 635–639. doi:10.3171/JNS/2008/109/10/0635. PMID 18826349.

External links

Classification	D ICD-10: G46.3 ICD-9-CM: 344.89 DiseasesDB: 32780

Cerebrovascular diseases including stroke

Ischaemic 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

Haemorrhagic stroke

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

Aneurysm

Intracranial aneurysm
- Charcot–Bouchard aneurysm

Other

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

Cerebral cortex

ACA syndrome
MCA syndrome
PCA syndrome
Aphasia
Frontal lobe
- Expressive aphasia
- Abulia
Parietal lobe
Occipital lobe
Temporal lobe
- Cortical deafness
- Prosopagnosia

Subcortex

Basal ganglia
Thalamic syndrome

Cerebellum

Lateral
Medial
- Cerebellar ataxia

Brainstem

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