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Intracranial pathology in young children with apparently isolated nystagmus
Mansoor A Shammari1, Sahar M Elkhamary, Arif O Khan
1King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.
Insights
In young children, isolated nystagmus rarely indicates brain pathology. Careful assessment of optic nerve head pallor is crucial; if present, brain magnetic resonance imaging (MRI) is recommended.
Area of Science:
- Pediatric Ophthalmology
- Neuro-ophthalmology
- Pediatric Neurology
Background:
- Nystagmus in early childhood can be a concerning symptom.
- Investigating the underlying cause is critical for timely intervention.
Purpose of the Study:
- To determine the incidence of intracranial pathology in young children presenting with apparently isolated nystagmus.
- To evaluate the utility of brain magnetic resonance imaging (MRI) in diagnosing such cases.
Main Methods:
- Retrospective review of institutional records.
- Inclusion criteria: children up to 5 years old with nystagmus investigated by brain MRI.
Main Results:
- Twenty-six children (17 boys, 9 girls) were analyzed.
- Only 12% (3/26) showed significant MRI findings, all with optic nerve head pallor.
- Nystagmus characteristics did not predict intracranial pathology.
Conclusions:
- Isolated nystagmus in early childhood is unlikely to be associated with intracranial pathology.
- Optic nerve head assessment for pallor is essential; if present, brain MRI is indicated.
- Clinical nystagmus description was not predictive of intracranial findings.
Purpose:
To assess the incidence of intracranial pathology in young children who had brain magnetic resonance imaging (MRI) to investigate apparently isolated nystagmus noted within the first few years of life.
Methods:
Retrospective institutional review of such children (up to 5 years old).
Results:
Twenty-six patients (17 boys, 9 girls) were identified. Nystagmus was clinically bilateral in 22 (85%) and unilateral in 4 (15%). Seventeen cases (65%) were described as horizontal pendular nystagmus, 5 (19%) as horizontal jerk nystagmus, 2 (8%) as vertical pendular nystagmus, and 1 each as downbeat nystagmus and torsional nystagmus (8%). Three of the 26 patients (12%) had significant MRI findings and all three had temporal optic nerve head pallor noted during clinical examination. Nystagmus was horizontal pendular in two patients and rotary in the third.
Conclusion:
The optic nerve head should be carefully assessed for signs of pallor in young children with nystagmus and, if present, brain MRI should be performed. Otherwise, isolated early childhood nystagmus is unlikely to be associated with intracranial pathology. Clinical description of nystagmus did not predict intracranial pathology in this cohort.
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