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Research ArticleHead and Neck Imaging

CT and MR Imaging Appearances of an Extraosseous Calcifying Epithelial Odontogenic Tumor (Pindborg Tumor)

Alex Sik-chung Ching, Martin Wai Pak, Jacqueline Kew and Constantine Metreweli
American Journal of Neuroradiology February 2000, 21 (2) 343-345;
Alex Sik-chung Ching
aFrom the Departments of Diagnostic Radiology and Organ Imaging (A.S.C.C., J.K., C.M.) and Surgery (M.W.P.), Division of Otorhinolaryngology, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China.
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Martin Wai Pak
aFrom the Departments of Diagnostic Radiology and Organ Imaging (A.S.C.C., J.K., C.M.) and Surgery (M.W.P.), Division of Otorhinolaryngology, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China.
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Jacqueline Kew
aFrom the Departments of Diagnostic Radiology and Organ Imaging (A.S.C.C., J.K., C.M.) and Surgery (M.W.P.), Division of Otorhinolaryngology, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China.
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Constantine Metreweli
aFrom the Departments of Diagnostic Radiology and Organ Imaging (A.S.C.C., J.K., C.M.) and Surgery (M.W.P.), Division of Otorhinolaryngology, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, China.
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    Fig 1. Images from the case of a 23-year-old man with left facial swelling.

    A, Lateral radiograph of the sinus shows opacities within the left maxilla and an unerupted tooth in its posterior wall.

    B, Coronal CT scan reveals a rounded heterogeneous mass almost filling the entire left maxillary antrum. The lesion contains a central tooth with surrounding amorphous calcifications and soft tissue elements in the periphery.

    C, Coronal T2-weighted MR image shows a large heterogeneous mass occupying the expanded left maxilla. There were intralesional areas of low signal in the T2-weighted sequences, consistent with calcification and the maxillary teeth identified on the CT scan.

    D, Axial contrast-enhanced T1-weighted image shows a large heterogeneous mass occupying the expanded left maxilla. There were intralesional areas of low signal in the T1-weighted sequences, consistent with calcification and the maxillary teeth identified on the CT scan. Non-homogeneous enhancement can be seen, especially on the periphery of the lesion. Anterolaterally, there is a small cortical breakage and extension to the buccinator muscle and subcutaneous tissues of the left cheek.

    E, Gross specimen shows an unerupted second molar (arrow) in the calcified substance of the well-encapsulated tumor.

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American Journal of Neuroradiology
Vol. 21, Issue 2
1 Feb 2000
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Cite this article
Alex Sik-chung Ching, Martin Wai Pak, Jacqueline Kew, Constantine Metreweli
CT and MR Imaging Appearances of an Extraosseous Calcifying Epithelial Odontogenic Tumor (Pindborg Tumor)
American Journal of Neuroradiology Feb 2000, 21 (2) 343-345;

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CT and MR Imaging Appearances of an Extraosseous Calcifying Epithelial Odontogenic Tumor (Pindborg Tumor)
Alex Sik-chung Ching, Martin Wai Pak, Jacqueline Kew, Constantine Metreweli
American Journal of Neuroradiology Feb 2000, 21 (2) 343-345;
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