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Infantile Fibromatosis of the Neck with Intracranial Involvement: MR and CT Findings

Sebastian Flackea, Dirk Pauleita, Ewald Kellera, Giesela Knoepflea, Jochen Textora, Claudia Leutnera and Hans H. Schilda

a From the Departments of Radiology (S.F., D.P., E.K., J.T., C.L., H.H.S.) and Pathology (G.K.), University of Bonn, Germany.



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  		FIG 1. Infantile fibromatosis with intracranial manifestation in a 3-year-old boy.

A–D, Axial T2-weighted images (2700/20/6 [TR/TE/excitations]) and sagittal T1-weighted images (550/17/2) with and without contrast enhancement depict a tumor in the infratemporal and pterygopalatinal fossa extending through the oval foramen into the middle cranial fossa and the right prepontine cistern. The signal intensity is more heterogenic as compared with CT scans. On the T2-weighted images (A, B) the signal intensity was intermediate between muscle and fat and the tumor was markedly hypointense relative to brain parenchyma. On the unenhanced T1-weighted image (C) the tumor was iso- to slightly hyperintense relative to muscle but slightly hypointense relative to brain parenchyma and strongly enhanced with gadopentetate dimeglumine (D). Contrast enhancement was particularly pronounced intracranially (arrow).





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X