Fibroblastic meningioma

by Mario Ricciardi, DVM, MS | 2017-04-17

Contrast-enhanced transverse MDCT image. Note the "dural tail" sign (arrow) and hyperostosis of the overlying calvarium (arrowhead).

Contrast-enhanced thick slab transverse MPR MDCT image – shading smooth table. Note the extension of the meningeal layer (arrows).

Native transverse Turbo 3D T1w (RF-spoiled 3D gradient echo) MRI image. Note the the hyperostosis of the overlying calvarium (arrowhead) and mass effect with right midline shift (arrows).

Native transverse Turbo 3Dw (RF spoiled 3D gradient echo) MRI image after paramagnetic contrast media administration. Note the “dural tail” sign (arrows).

Turbo 3D T1w (RF-spoiled 3D gradient echo) MRI image after paramagnetic contrast media administration – 3D volume rendering of the neoplasm. 3D tumor isolation shows in detail the extension of the peritumoral neoplastic meningeal layer (seen as “dural tail” in cross-sectional images and in dorsal and sagittal reformatted images.

Intraoperative images showing the surgical window (a) before and (b) after craniotomy. After bone removal the peritumoral neoplastic dura (arrowhead) is readily visible (b). Image (c) shows tumor removal (arrow).

Macroscopic picture of the tumor after removal. Macroscopically it was solid, 1.5 cm in diameter with an irregular whitish surface.

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Final diagnosis after histopathologic examination was fibroblastic meningioma.