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en plaque meningioma
Pronunciation: ahn-PLAHK men-in-jee-OH-mah
A meningioma variant that grows as a flat, carpet-like sheet rather than a discrete mass.
Full Definition
En plaque meningioma represents a growth pattern where the tumor spreads diffusely along the dural surface in a flat, carpet-like configuration rather than forming a discrete nodular mass. This variant commonly involves the sphenoid wing and can cause hyperostosis of adjacent bone. The en plaque pattern makes complete surgical resection challenging and increases the risk of recurrence. Imaging typically shows diffuse dural thickening and enhancement rather than a focal mass lesion.
Usage
Usage note: Italicize 'en plaque' as it derives from French.
In Context
- "The sphenoid wing en plaque meningioma demonstrated extensive hyperostosis on CT imaging." — Radiology report
- "Complete resection of en plaque meningiomas remains technically challenging due to their infiltrative growth pattern." — Surgical planning notes
Also known as
carpet-type meningioma
sheet-like meningioma
Contrasted with
nodular meningioma
Don't confuse with
dural metastasis
inflammatory pseudotumor