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Thalamic tumors in childhood. Clinical, laboratory, and therapeutic considerations
Insights
Pediatric primary thalamic tumors present with shorter symptom duration and more motor issues than adult cases. Diagnostic imaging and electroencephalograms aided in identifying these brain tumors.
Area of Science:
- Pediatric neuro-oncology
- Neurology
- Radiology
Background:
- Primary thalamic tumors are rare in children.
- Understanding pediatric thalamic tumors is crucial for diagnosis and treatment.
Observation:
- Children with thalamic tumors showed shorter symptom duration and more early motor abnormalities compared to adults.
- Cerebellar disorder signs were prominent in several pediatric cases.
- Diagnostic imaging (arteriography, gas encephalography) was effective in most cases.
Findings:
- Electroencephalogram (EEG) was abnormal in over 70% of cases, suggesting a thalamic mass in over a third.
- Awake spindles on EEG were a specific indicator of thalamic tumors.
- Ventricular dilation requiring shunts occurred in nine patients.
Implications:
- Early recognition of specific clinical and EEG features can improve diagnosis of pediatric thalamic tumors.
- Timely intervention, including shunting and multimodal therapy, is vital.
- Further research into the unique presentation and management of pediatric thalamic tumors is warranted.
Abstract:
Eighteen cases of primary thalamic tumor occurring in children (ages 2 1/2 to 12 1/2 years) were studied retrospectively. Among the clinical features of this group that contrasted with adults having similar tumors were a shorter duration of symptoms before diagnosis and a higher incidence of motor abnormalities in the early illness. In several cases, symptoms and signs usually associated with cerebellar disorders predominated. Arteriography or gas encephalography or both were diagnostic in all but two cases. The electroencephalogram, abnormal in slightly more than 70% of the cases, suggested a thalamic mass in more than one third. A highly specific EEG feature was the presence of spindles while patients were awake. In 15 cases there was some evidence of ventricular dilation and nine of these later required shunts. In addition to shunting procedures, therapy included x-ray therapy alone or with craniotomy or craniotomy alone.