Potentially distinctive features of sinonasal inverted papilloma on MR imaging.
OBJECTIVE
The objective of this study is to describe potentially distinctive MR features of sinonasal inverted papilloma and those of coexisting squamous cell carcinoma.


CONCLUSIONS
A sinonasal mass with a convoluted cerebriform pattern on T2- or enhanced T1-weighted images suggests inverted papilloma as a histologic diagnosis. Necrosis in a mass with such an appearance strongly suggests coexistent carcinoma.
Department of Radiology, Jikei University School of Medicine, Nishi-shimbashi, Minato-ku, Tokyo, Japan.
H
H
Ojiri
M
M
Ujita
S
S
Tada
K
K
Fukuda
D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D018308:Papilloma, Inverted / Q000473:pathology*; D010255:Paranasal Sinus Neoplasms / Q000473:pathology*; D012189:Retrospective Studies