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Improved Turnaround Times | Median time to first decision: 12 days

Research ArticleHead and Neck Imaging

Sinonasal Inverted Papilloma: Value of Convoluted Cerebriform Pattern on MR Imaging

T.Y. Jeon, H.-J. Kim, S.-K. Chung, H.-J. Dhong, H.Y. Kim, Y.J. Yim, S.T. Kim, P. Jeon and K.H. Kim
American Journal of Neuroradiology September 2008, 29 (8) 1556-1560; DOI: https://doi.org/10.3174/ajnr.A1128
T.Y. Jeon
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H.-J. Kim
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S.-K. Chung
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H.-J. Dhong
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H.Y. Kim
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Y.J. Yim
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S.T. Kim
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P. Jeon
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K.H. Kim
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    Fig 1.

    Characteristic MR imaging appearance of a CCP in IP. Coronal T2-weighted (A) and contrast-enhanced fat-suppressed T1-weighted (B) MR images show alternating hypointense and hyperintense striations throughout the tumor involving the left maxillary sinus and nasal cavity.

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    Fig 2.

    MR images of the IPs concomitant with SCC in 2 different patients. A, Coronal contrast-enhanced, fat-suppressed, T1-weighted image shows a large irregular mass in the right nasal cavity and maxillary sinus. Although the nasal mass displays the characteristic CCP, it is lost in most of the mass of the maxillary sinus. Note the bone destruction at the superior and lateral walls of the maxillary sinus with associated orbital invasion (arrows). B, Axial contrast-enhanced, fat-suppressed, T1-weighted image shows an expansile mass in the left nasal cavity, which displays a diffuse CCP throughout the lesion, indistinguishable from the IP without associated carcinoma. The histology revealed multiple foci of microscopic carcinoma scattered within the tumor.

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    Fig 3.

    Contrast-enhanced fat-suppressed MR images of 4 different malignant sinonasal tumors displaying a CCP either diffusely (A–C) or partially (D). A, SCC. B, Primitive neuroectodermal tumor. C, Mucoepidermoid carcinoma. D, Esthesioneuroblastoma. In the case of esthesioneuroblastoma, the MR image shows a large mass in the left nasal cavity, extending to the orbit and cranial cavity. Note that, whereas the nasal component of the mass displays a typical appearance of CCP, it is not seen in the rather homogeneously enhancing orbital and intracranial components (asterisks in D).

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  • Comparison of visualization of a CCP on MR imaging between inverted papilloma and various malignant sinonasal tumors

    TumorNo. of Total SubjectsNo. of Subjects Showing CCP on MR Imaging
    DiffusePartialT2WICE-T1WI
    Inverted papilloma302642830
        Without SCC222202022
        With SCC84488
    Malignant tumors1286111317
        SCC492668
        Lymphoma390000
        Adenoid cystic carcinoma101112
        Malignant melanoma80101
        Adenocarcinoma51011
        Rhabdomyosarcoma40000
        Esthesioneuroblastoma30222
        Plasmacytoma30000
        Primitive neuroectodermal tumor21011
        Ameloblastic carcinoma10000
        Chordoma10000
        Mucoepidermoid carcinoma11011
        Undifferentiated carcinoma10111
        Non-keratinizing carcinoma10000
    • Note:—CCP indicates convoluted cerebriform pattern; T2WI, T2-weighted image; CE-T1WI, contrast-enhanced T1-weighted image; SCC, squamous cell carcinoma.

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American Journal of Neuroradiology: 29 (8)
American Journal of Neuroradiology
Vol. 29, Issue 8
September 2008
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Cite this article
T.Y. Jeon, H.-J. Kim, S.-K. Chung, H.-J. Dhong, H.Y. Kim, Y.J. Yim, S.T. Kim, P. Jeon, K.H. Kim
Sinonasal Inverted Papilloma: Value of Convoluted Cerebriform Pattern on MR Imaging
American Journal of Neuroradiology Sep 2008, 29 (8) 1556-1560; DOI: 10.3174/ajnr.A1128

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Sinonasal Inverted Papilloma: Value of Convoluted Cerebriform Pattern on MR Imaging
T.Y. Jeon, H.-J. Kim, S.-K. Chung, H.-J. Dhong, H.Y. Kim, Y.J. Yim, S.T. Kim, P. Jeon, K.H. Kim
American Journal of Neuroradiology Sep 2008, 29 (8) 1556-1560; DOI: 10.3174/ajnr.A1128
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