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Inflammatory Myofibroblastic Tumor of the Nasal Cavity

V. Laia, Y.C. Wonga, W.Y. Lamb, W.C. Tsuia and S.H. Luka

a Department of Diagnostic Radiology, Tuen Mun Hospital, Tuen Mun, Hong Kong, China
b Department of Pathology, Tuen Mun Hospital, Tuen Mun, Hong Kong, China


Figure 1
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  		Fig 1. A, CT scan shows soft-tissue mass in the left nasal cavity with infiltration into the nasopharyngeal roof.

B, CT scan shows soft-tissue mass in the left posterior nasal cavity with widening of the left sphenopalatine foramen, suggestive of direct infiltration.


Figure 2
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  		Fig 2. A, T2-weighted coronal image shows a soft-tissue mass of intermediate signal intensity in the left posterior nasal cavity.

B, Postcontrast T1-weighted axial image shows homogeneous enhancement of the soft-tissue mass with no internal signal-intensity void areas to suggest hypertrophied vasculature.


Figure 3
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  		Fig 3. A, Angiogram reveals the hypervascular nature of the tumor, supplied by the mildly hypertrophied terminal branches of the left internal maxillary artery.

B, Capillary phase shows attenuated tumor staining with slow washout.


Figure 4
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  		Fig 4. This nasal inflammatory myofibroblastic tumor is composed of a storiform array of plump spindle cells with a background of chronic inflammatory infiltrate (hematoxylin-eosin, original magnification x 200).





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