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Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition

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[Opsoclonus-myoclonus syndrome].

Hugo A Arroyo¹, Natalia Tringler

¹Servicio de Neurología, Hospital de Pediatría Juan P. Garrahan, Buenos Aires, Argentina. hugoarroyo@arnet.com.ar

|February 26, 2009

Summary

Opsoclonus-myoclonus syndrome in children is a rare autoimmune disorder often linked to neuroblastoma. Early diagnosis and treatment are crucial for managing symptoms and potential long-term neurocognitive effects.

Area of Science:

Pediatric Neurology
Neuroimmunology
Oncology

Background:

Opsoclonus-myoclonus syndrome (OMS) is a rare neurological disorder in children.
Characterized by opsoclonus, myoclonus, ataxia, and irritability.
Frequently associated with neuroblastoma, but infectious or toxic causes exist.

Observation:

The syndrome involves chaotic eye movements (opsoclonus) and involuntary muscle jerks (myoclonus).
Ataxia and irritability are common presenting symptoms.
A significant portion of patients experience neurocognitive and psychiatric sequelae.

Findings:

An autoimmune mechanism is implicated, potentially affecting brain stem and cerebellum.
This autoimmune dysfunction explains key symptoms like opsoclonus, myoclonus, and ataxia.

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Wider brain dysfunction is suggested by encephalopathic symptoms and long-term neurocognitive deficits.

Implications:

Current treatments include steroids, ACTH, and immunomodulatory/immunosuppressive drugs.
Prospective studies are needed to evaluate the long-term efficacy of these treatments.
Understanding the autoimmune basis of OMS is crucial for developing targeted therapies and improving patient outcomes.