Midbrain tremor and hypertrophic olivary degeneration after pontine hemorrhage

@article{Shepherd1997MidbrainTA,
  title={Midbrain tremor and hypertrophic olivary degeneration after pontine hemorrhage},
  author={Gordon M. G. Shepherd and Erik Taub{\"o}ll and S{\o}ren Jacob Bakke and Rolf Nyberg‐hansen},
  journal={Movement Disorders},
  year={1997},
  volume={12}
}
A severe rest tremor arose in a patient's right arm 9 months after a pontine tegmental hemorrhage. Magnetic resonance studies at 4 and 10 months showed residual hemosiderin in the pons and increasing hypertrophic olivary degeneration (HOD) affecting primarily the left olive. The tremor was refractory to pharmacotherapy (clonazepam, propranolol, and levodopa), but was reduced after implantation of a thalamic stimulator device. Although pontine hemorrhage is among several common causes of HOD, it… 
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References

SHOWING 1-10 OF 26 REFERENCES
Rest tremor and extrapyramidal symptoms after midbrain haemorrhage: clinical and 18F-dopa PET evaluation.
A 25 year old man had an acute subarachnoid haemorrhage due to the rupture of a right peduncular subthalamic arteriovenous malformation. Seven months later he developed a left rest tremor associated
Suppression of "rubral" tremor with levodopa.
TLDR
Evaluated levodopa treatment in a patient with a mesencephalic angioma producing intractable tremor, the lesion being so circumscribed that it provided a paradigm of rubral tremor.
Hypertrophic olivary degeneration: MR imaging and pathologic findings.
TLDR
MR images may depict very early neuronal changes in the oliva and are well correlated with pathologic staging, which indicates that hypertrophic olivary degeneration due to hemorrhage and hypertrophy appeared after 5-15 months.
Post‐traumatic segmental myoclonus associated with bilateral olivary hypertrophy
TLDR
MR‐imaging showed multiple post‐traumatic lesions within the dentato‐rubro‐olivary pathway (“myoclonic triangle”), associated with bilateral enlargement and increased signal intensity of the inferior olives, suggesting underlying pathological changes different from typical gliosis.
Lateral segmental brainstem hemorrhages
TLDR
The syndrome is relatively consistent and includes small reactive pupils with a smaller pupil ipsilateral to the lesion, limb ataxia of the cerebellar type (often greater ipsilaterally), contra lateral hemiplegia, and contra lateral severe hemisensory loss.
Post‐traumatic midbrain tremors
TLDR
Patients with post-traumatic tremor responded to anticholinergic or dopaminergic therapy and radiographic and pathologic examination indicated a contralateral midbrain localization of the lesion.
Syndrome of palatal myoclonus and progressive ataxia
TLDR
The syndrome of progressive ataxia and palatal myoclonus should be distinguished from other ataxias and degenerations that affect the brainstem and cerebellum.
Tremor after head injury and its treatment by stereotaxic surgery.
TLDR
The nature of the tremor is described in eight patients and a stereotaxic thalamotomy was performed, dramatically relieving or reducing the severity of tremor in each instance, and resulting in improved function of the affected limb and increased independence.
Cerebellar Influence on Olivary Excitability in the Cat
TLDR
It is concluded that cerebellar output may not merely inhibit olivary neurons, but also, in conjunction with an excitatory nucleo‐mesodiencephalo‐olivary circuit, modulate olivARY excitability in a rather complex manner.
...
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