Word-finding deficits persist after left anterotemporal lobectomy

Area of Science:

• Neuroscience
• Neurosurgery
• Cognitive Psychology

Background:

• Anterotemporal lobectomy is a surgical procedure used to treat epilepsy.
• Word-finding difficulty, or anomia, can be a cognitive side effect of brain surgery.

Purpose of the Study:

• To determine the incidence and extent of word-finding difficulty after anterotemporal lobectomy.
• To identify predictors of changes in word-finding ability post-surgery.

Main Methods:

• A case-series study involving 59 consecutive patients undergoing standard anterotemporal lobectomy.
• Confrontation naming ability was assessed using the Boston Naming Test before and 1 year after surgery.
• Stepwise multiple regression analysis was used to identify predictors of naming changes.

Main Results:

• A significant exacerbation of word-finding difficulty persisted for at least 1 year in 25% of patients with left, speech-dominant anterotemporal lobectomy.
• "Tip-of-the-tongue" errors were the most frequent type observed.
• Worsening word-finding was more pronounced in patients with left anterotemporal lobectomy who were left-hemisphere speech dominant, older, or evaluated earlier postoperatively.

Conclusions:

• Persisting word-finding difficulties are a notable consequence of left anterotemporal lobectomy.
• Findings may differ from previous studies due to variations in surgical extent or outcome measures.
• This information is crucial for counseling patients on potential cognitive side effects of anterotemporal lobectomy.