A right amygdalohippocampectomy: A diagnostic challenge

Area of Science:

• Neuroscience
• Psychiatry
• Epilepsy Surgery

Background:

• Medically intractable mesial temporal lobe epilepsy often necessitates amygdalohippocampectomy (AHE).
• The neuropsychiatric sequelae of right AHE in outpatients remain understudied.
• This study aims to investigate a broad spectrum of neuropsychiatric symptoms post-right AHE.

Observation:

• Cognitive functions, including verbal memory, did not significantly differ between right AHE patients and controls.
• A significant difference was observed in affective Theory of Mind (ToM) between the two groups.
• Right AHE patients reported fewer subjective behavioral and psychiatric problems compared to controls.

Findings:

• Affective Theory of Mind (ToM) was significantly impaired in patients who underwent right AHE (p=0.044).
• Patients exhibited a more active coping style, using more reassuring thoughts (p=0.006) and fewer passive reactions.
• Proxies reported a trend towards increased behavioral disinhibition in AHE patients compared to controls.

Implications:

• Right AHE patients may exhibit self-awareness deficits regarding their emotional and behavioral changes.
• The subjective underestimation of symptoms highlights the critical role of collateral information from significant others.
• Disruption of the amygdala-orbitofrontal cortex connection likely underlies the observed emotional and behavioral alterations.