Inverted papilloma

Case contributed by A.Prof Frank Gaillard
MRI

MRI with contrast through the paranasal sinuses demonstrates a mass occupying the left maxillary antrum and widening the ostiomeatal complex. On non-contrast T1 images it is somewhat heterogeneous in intensity ranging from isointense to hypointense compared to muscle.

On T2 weighted images the mass demonstrates a striking convoluted appearance with alternating bands of markedly hyperintense tissue separated by low intensity tissue. 

Following administration of contrast a similar appearance is noted, again with the so-called convoluted cerebriform pattern.

Case Discussion

Features are characteristic of an inverted papilloma which was subsequently histologically proven.

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Case information

rID: 9399
Case created: 12th Apr 2010
Last edited: 14th Jun 2016
System: Head & Neck
Inclusion in quiz mode: Included

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