[Language disorders in children with morphologic abnormalities of the hippocampus]

Area of Science:

• Neuroimaging
• Developmental Neuroscience
• Pediatric Neurology

Context:

• Morphologic abnormalities of the hippocampal formations (MAHF) are increasingly detected via magnetic resonance imaging (MRI).
• Understanding the specific neurological and developmental disorders associated with MAHFs is crucial for early diagnosis and intervention.
• Hippocampal formation morphology is vital for cognitive functions, including memory and language processing.

Purpose:

• To investigate the association between morphologic abnormalities of the hippocampal formations (MAHF) and language disorders in children.
• To characterize the types of language impairments in pediatric patients with isolated MAHFs.
• To explore potential relationships between MAHF lateralization, epilepsy, and language disorder severity.

Summary:

• A retrospective analysis of 2208 pediatric MRIs identified 96 cases (4.3%) with MAHFs.
• Of 14 children with isolated MAHFs, 9 underwent language assessment, revealing significant expression and phonology deficits in 4, and broader language disorders in another 4.
• No correlation was found between MAHF lateralization or epilepsy and language disorder severity, though 9 children had autism spectrum disorders and 7 were epileptic.

Impact:

• This study suggests that isolated MAHFs can be a direct cause of language disorders, particularly affecting expressive language.
• Findings highlight the importance of considering MAHFs in the differential diagnosis of pediatric language impairments.
• Further research into the neurodevelopmental impact of hippocampal malformations is warranted.