Peri-ictal transient MRI signal abnormalities with crossed cerebellar diaschisis due to status epilepticus

Hébant, Benjamin; Louillet, F.; Verdure, P.; Couteulx, S Le; Bouchaud, L

doi:10.1016/j.neurol.2017.10.017

Cited by 2 publications

(3 citation statements)

References 5 publications

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“…Initially described in the stroke literature, crossed cerebellar diaschisis may represent injury caused by excessive neuronal transmission from prolonged excitatory synaptic activity via the cortico-pontine-cerebellar pathways, that leads to an imbalance between energy hypermetabolism and blood supply and results in hypoxia and anerobic metabolism 19,20,21,22 .…”

Section: Acute Transient Crossed Cerebellar Diaschisismentioning

confidence: 99%

“…Cerebellar afferent synapses reach the cerebral cortex via the cerebellar-dentate, dentaterubral (crossed), rubro-thalamic and thalamo-cortical pathways. Cerebral motor cortex afferent synapses tend to modulate the cerebellar control of motor function through the cortico-ponto-cerebellar pathway 20,23,24,25 . Postical brain MRI can show a wide range of abnormalities reflecting physiological and pathological alterations due to seizure.…”

Section: Acute Transient Crossed Cerebellar Diaschisismentioning

confidence: 99%

“…Postical brain MRI can show a wide range of abnormalities reflecting physiological and pathological alterations due to seizure. Lesions may also involve the epileptogenic region, as well as remote structures possibly related to the seizure propagation 20 . Classically affected regions are the hippocampus, basal ganglia, corpus callosum, neocortex, subcortical white matter, and, in rare cases, the cerebellum, manifesting as classic CCD 19,24 .…”

Section: Acute Transient Crossed Cerebellar Diaschisismentioning

confidence: 99%

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Transaxonal degenerations of cerebellar connections: the value of anatomical knowledge

Raeder

Reis

Campos

et al. 2020

Arq. Neuro-Psiquiatr.

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Transaxonal degenerations result from neuronal death or the interruption of synaptic connections among neuronal structures. These degenerations are not common but may be recognized by conventional magnetic resonance imaging. Objective: The learning objectives of this review include recognition of the imaging characteristics of transaxonal degenerations involving cerebellar connections, the identification of potential encephalic lesions that can lead to these degenerations and correlation of the clinical manifestations with imaging findings that reflect this involvement. Methods: In this report, we review the neuroanatomical knowledge that provides a basis for identifying potential lesions that can result in these degenerations involving cerebellar structures. Results: Hypertrophic olivary degeneration results from an injury that interrupts any of the components of the Guillain-Mollaret triangle. In this work, we describe cases of lesions in the dentate nucleus and central tegmental tract. The crossed cerebellar diaschisis presents specific imaging findings and clinical correlations associated with its acute and chronic phases. The Wallerian degeneration of the middle cerebellar peduncle is illustrated by fiber injury of the pontine cerebellar tracts. A T2-hyperintensity in the dentate nucleus due to a thalamic acute lesion (in ventral lateral nuclei) is also described. Each condition described here is documented by MRI images and is accompanied by teaching points and an anatomical review of the pathways involved. Conclusion: Neurologists and radiologists need to become familiar with the diagnosis of these conditions since their presentations are peculiar and often subtle, and can easily be misdiagnosed as ischemic events, degenerative disease, demyelinating disease or even tumors.

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Section: Acute Transient Crossed Cerebellar Diaschisismentioning

confidence: 99%