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AJR 2000; 175:465-468
© American Roentgen Ray Society

Original Report

Potentially Distinctive Features of Sinonasal Inverted Papilloma on MR Imaging

Hiroya Ojiri1, Masuo Ujita, Shimpei Tada and Kunihiko Fukuda

1 All authors: Department of Radiology, Jikei University School of Medicine, 3-25-8 Nishi-shimbashi, Minato-ku, Tokyo 105-8461 Japan.

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

CONCLUSION. 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.


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