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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 20:923-925 (5 1999)
© 1999 American Society of Neuroradiology

ARTICLE

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

Sebastian Flacke^a, Dirk Pauleit^a, Ewald Keller^a, Giesela Knoepfle^a, Jochen Textor^a, Claudia Leutner^a and Hans H. Schild^a

^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.

Summary: CT and MR imaging studies were performed in a 3-year-old boy with infantile fibromatosis arising from the infratemporal fossa and extending into the middle cranial fossa. On CT scans, the lesion was hyperattenuating (44–49 Hounsfield units [HU]), enhancing significantly after application of contrast material (63–66 HU). The MR images showed a multilobulated lesion of heterogeneous signal intensity. The tumor was markedly hypointense on T2-weighted images and slightly hypointense on T1-weighted images relative to brain tissue, iso- or slightly hyperintense relative to tongue muscle on both T2- and T1-weighted images, and enhanced strongly after administration of gadopentetate dimeglumine.

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