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. 2019 Jan 14;21(Suppl 1):i44–i61. doi: 10.1093/neuonc/noy143

Fig. 3.

Fig. 3

Noncontrast CT and T1-weighted gadolinium-enhanced MRI demonstrating (A, B) a grade I meningioma with profound hyperostosis and extracalvarial enhancing tumor, and (C, D) a grade III meningioma with lytic erosion of adjacent bone from tumor invasion.