Pleomorphic Adenoma of the Nasal Septum: MR Features

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fig 1.
Contrast-enhanced axial CT image shows the intranasal mass. The tumor has destroyed the nasal septum and occupies both nasal cavities. The maxillary sinuses are intact. The tumor shows heterogeneous enhancement and contains small calcified foci
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fig 2.
MR images of the intranasal mass.
A, Axial T1-weighted image (500/14/2 [TR/TE/excitations]) shows the tumor has destroyed the nasal septum and occupies both nasal cavities. The tumor is isointense to brain.
B, Axial fast-STIR image (4000/30/2) shows a lobular, high signal intensity tumor. The tumor abuts the nasal septum to the right and has destroyed it. The left maxillary sinus is intact.
C, Coronal fast-STIR image (4000/30/2) also shows a well-marginated, lobular, high-signal-intensity mass occupying the midline nasal cavity. The skull base is intact.
D, Axial contrast-enhanced fat-suppressed T1-weighted spin-echo image (400/20/2) shows marked enhancement with foci of unenhanced lower signal intensity within the body of the tumor.