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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 22:1394-1397 (8 2001)
© 2001 American Society of Neuroradiology

ARTICLE

Unusual CT and MR Findings of Inflammatory Pseudotumor in the Parapharyngeal Space: Case Report

Keiko Nakayama^,a, Yuichi Inoue^a, Tsunemasa Aiba^a, Kinuko Kono^a, Kenichi Wakasa^a and Ryusaku Yamada^a

^a From the Departments of Radiology (K.N., Y.I., R.Y.) and Pathology (K.W.), Osaka City University Medical School; the Department of Otolaryngology (T.A.), Osaka City General Hospital; and the Department of Radiology (K.K.), Izumi Municipal Hospital, Osaka, Japan.

Summary: Unusual MR and CT findings of an inflammatory pseudotumor in the parapharyngeal space of a 73-year-old woman are reported. The mass was hypointense on T1- and T2-weighted images and demonstrated ring enhancement after contrast medium injection. Punctated calcifications were scattered at the periphery. Inflammatory pseudotumors in the parapharyngeal space are rare, and only three cases have been reported. The possible pathogenesis and varieties of inflammatory pseudotumors are discussed.

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