Advanced
Technical
IVT
tumefactive lesion
Large inflammatory brain lesion (>2cm) that mimics a tumor on neuroimaging.
Full Definition
A tumefactive lesion is a large inflammatory demyelinating lesion, typically greater than 2 centimeters in diameter, that can mimic brain tumors on neuroimaging studies. These lesions are most commonly seen in multiple sclerosis but can also occur in other inflammatory conditions. The term 'tumefactive' refers to their tumor-like appearance, which can create diagnostic challenges and may require advanced imaging techniques, biopsy, or careful clinical correlation to distinguish from neoplastic processes.
Usage
Usage note: Always specify size measurements when describing tumefactive lesions for accurate classification.
In Context
- "The 4-cm tumefactive lesion in the right frontal lobe required biopsy to exclude malignancy." — Case presentation
- "Advanced MRI techniques including perfusion imaging helped differentiate the tumefactive MS lesion from glioma." — Radiology consultation
Also known as
pseudotumoral lesion
tumor-like lesion
Don't confuse with
brain tumor
glioma
lymphoma