Cognitive dysfunction in children with brain tumors at diagnosis

Area of Science:

• Neuroscience
• Pediatric Oncology
• Cognitive Psychology

Background:

• Brain tumors (BT) and their treatments often lead to cognitive impairments in survivors.
• Emerging evidence suggests cognitive deficits may be present at diagnosis, prior to treatment initiation.
• Understanding the baseline cognitive profile is essential for early intervention.

Purpose of the Study:

• To compare the baseline neuropsychological functioning of children with BT to those with non-CNS oncological diagnoses.
• To identify specific cognitive domains affected at diagnosis in pediatric brain tumor patients.

Main Methods:

• A cohort of 20 children with BT and 27 children with non-CNS cancers (ages 6.1-16.9) underwent comprehensive neuropsychological testing.
• Testing was conducted before any therapeutic interventions (surgery, chemotherapy, radiation).
• Parent and child self-report questionnaires assessed emotional functioning and quality of life.

Main Results:

• Children with BT demonstrated significantly poorer performance in working memory, verbal memory, and attention compared to controls.
• Effect sizes for these deficits ranged from 0.28 to 0.47.
• Perceptual reasoning, processing speed, and verbal comprehension remained unaffected at baseline.

Conclusions:

• Pediatric brain tumor patients exhibit specific cognitive deficits at diagnosis.
• Early cognitive interventions are necessary to mitigate academic difficulties.
• Proactive support can improve school reintegration for children with brain tumors.