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Cicatricial Fibromatosis Mimics Metastatic Medulloblastoma

Kouichirou OkamotoGo,a, Jusuke Itoa and Kunio Sakaia

a From the Departments of Radiology and Dentistry, Niigata University Schools of Medicine, Niigata, Japan.



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  		FIG 1. Axial spin-echo MR images in a 15-year-old boy acquired 8 months after surgery for cerebellar medulloblastoma.

A, T1-weighted image (600/15/2 [TR/TE/excitations]) shows an isointense small round mass (arrow) under the right semispinalis capitis muscle.

B, On T2-weighted image (3000/90/1), the mass (arrow) is well demarcated and isointense relative to subcutaneous fat.

C, On postcontrast T1-weighted image (600/15/2), the mass (arrow) enhances markedly and homogeneously.





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