Aphasia (language difficulty)

What it is

Aphasia is difficulty with language — which may involve producing speech, understanding speech, finding words, reading, or writing — caused by a glioma affecting the brain's language areas. These areas are usually in the left hemisphere in most people.

Understanding Aphasia (language difficulty)

Language is handled by specific brain regions (typically in the left hemisphere), and a glioma affecting these areas can impair language in various ways depending on the exact location. Some people have difficulty producing speech (speech becomes effortful or limited) while comprehension is relatively preserved; others have difficulty understanding speech or produce fluent but nonsensical speech; many have trouble finding words. Aphasia can be subtle (occasional word-finding difficulty) or pronounced. Because language areas are "eloquent" (critical) regions, gliomas there require especially careful surgical planning — sometimes including awake surgery with language mapping to protect function. Aphasia is an important localizing symptom and warrants evaluation. Speech therapy can help with language difficulties. Understanding aphasia in gliomas clarifies language difficulty as a key symptom of tumors in language areas.

Why it matters

Understanding aphasia helps patients and families recognize language difficulty as a symptom of a glioma in language areas — an important localizing sign that also has major implications for surgical planning to protect language.