Intermediate
Technical
In the Industry Vocabulary Test
meningioma
Pronunciation: meh-nin-jee-OH-mah
A typically benign tumor arising from the meninges that requires careful imaging assessment for surgical planning.
Full Definition
Meningiomas are the most common primary intracranial tumors, arising from arachnoid cap cells of the meninges. They typically demonstrate characteristic imaging features including dural tail enhancement and homogeneous contrast uptake. While most are benign (WHO Grade I), atypical and anaplastic variants exist and require different treatment approaches. Imaging plays a crucial role in determining resectability, assessing venous sinus involvement, and monitoring treatment response.
Usage
Usage note: Always specify location and grade when known; avoid confusion with meningeal metastases.
In Context
- "The parasagittal meningioma demonstrated the classic dural tail sign on post-contrast T1-weighted images." — MRI report
- "Calcification within the meningioma was better appreciated on CT than MRI." — Radiology consultation
Also known as
meningeal tumor
Don't confuse with
schwannoma
dural metastasis